JP2988422B2 - Pulse signal receiving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a pulse signal receiving apparatus which receives a pulse signal coming from a radio wave transmission source such as a high-frequency radar, and classifies the pulse signal for each radio wave transmission source.

[0002]

2. Description of the Related Art FIG. 22 is a block diagram of a conventional pulse signal receiving device. In the figure, 1 is an input antenna, 2 is a frequency conversion circuit for converting an input wave to an intermediate frequency (IF) frequency, 30 is an analog frequency measurement circuit such as an IFM, and 31 is a video PW calculation circuit for calculating a pulse width from a video signal. , 32 are pulse data memories for storing pulse data composed of pulse frequency and pulse width for each pulse, 3
3 is an F histogram generation circuit for classifying pulse data based on frequency; 34 is an F histogram storage memory;
Is a TOI classification circuit that creates a distribution of pulse-to-pulse intervals (TOI) for each section classified by frequency, 36 is a memory for storing the TOI classification result, and 37 is a signal indicating whether or not one radio wave transmission source is based on the TOI classification result. Radio wave source judgment circuit to judge
Reference numeral 8 denotes a radio wave source data storage memory.

Next, the operation will be described. The pulse signal input to the input antenna 1 is converted into a frequency in an intermediate frequency (IF) band by the frequency conversion circuit 2, and then the frequency is calculated by the analog frequency measurement circuit 30.
On the other hand, the video signal is detected by the video PW calculation circuit 31 as the pulse width of a point at which a certain level is lowered from the maximum amplitude level. The pulse data having these frequencies and pulse widths is output to the pulse data memory 32 for each received pulse signal.

Next, an F histogram generating circuit 33 generates a frequency frequency distribution based on the pulse data stored in the pulse data memory 32 and stores the frequency frequency distribution in an F histogram storing memory 34, and the frequency frequency distribution is stored in a TOI classifying circuit 35. Send out.

[0005] The TOI classification circuit 35 creates a histogram of pulse arrival intervals based on the pulse groups classified by the frequency frequency distribution, and stores the TOI classification result storage memory 3.
6 and sent to the radio wave transmission source determination circuit 37.

The radio wave source determining circuit 37 determines whether or not the pulse arrival interval is constant, and if the pulse arrival interval is constant, outputs the signal to the radio source data storage memory 38 as a radio source. I have to.

[0007]

However, the conventional pulse signal receiving apparatus, when classifying a plurality of received pulses for each same source, classifies the video signal based on a quantized pulse width and its frequency value. Therefore, if received pulse signals having frequencies close to each other are simultaneously received for each radio wave transmission source, it is not possible to classify the received pulse signals into pulse trains corresponding to the transmission sources, and to perform PRI (Pulse Repetitional Interpolation).
val) could not be determined in the case of the same source having a pulse train that fluctuated for each pulse. For this reason, when a radio wave pulse arrives in such a situation, there is a problem that a signal sequence of the incoming radio pulse cannot be detected.

The present invention has been made to solve such a problem, and classifies a pulse train for each transmission source based on the waveform of the arriving pulse instead of the pulse width and frequency value of the arriving pulse. This makes it possible to accurately and efficiently transmit a plurality of pulse signals to each source even when a pulse signal is simultaneously received from a plurality of radio wave sources such as a high-frequency radar or a pulse train in which the arrival intervals of the pulse signals are not constant. It is an object of the present invention to provide a pulse signal receiving device capable of separately detecting a pulse signal.

[0009]

In order to achieve the above object, a pulse signal receiving apparatus according to the present invention receives pulse signals respectively transmitted from a plurality of radio wave transmission sources, and transmits a received pulse signal to the radio wave transmission source. A pulse signal receiving device configured to classify the received pulse signal into a predetermined frequency by the frequency converting means; and converting the received pulse signal converted to a predetermined frequency by the frequency converting means to a frequency higher than the predetermined frequency. High-speed A / D conversion means for performing A / D conversion in a time series with a time series, and a time series calculated for each reception pulse signal based on the reception pulse signals A / D converted in a time series by the high-speed A / D conversion means Envelope data
A feature data detecting means for detecting as feature data, and a mutual phase between time-series envelope data for each of the received pulse signals within a predetermined time detected by the feature data detecting means.
And calculate the degree of correlation, and the degree of correlation is equal to or greater than a predetermined value.
Judge the received pulses as pulse signals from the same source
Classification means for classifying the received pulse signal for each radio wave transmission source .

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave sources and classifies received pulse signals for each of the radio wave sources, Frequency converting means for converting a pulse signal into a predetermined frequency; and a high-speed A / D for time-series A / D converting the amplitude value of the received pulse signal converted into the predetermined frequency by the frequency converting means at a frequency higher than the predetermined frequency. A cross-correlation between time-series sine-wave data of the received pulse signal within a predetermined time which is A / D-converted in time series by the conversion means and the high-speed A / D conversion means, and calculates a degree of correlation; And a classifying means for judging received pulses equal to or larger than a predetermined value as pulse signals from the same transmission source and classifying the reception signals for each radio wave transmission source.

Further, according to the present invention, a high speed A
Pulse data calculation means for calculating pulse data for each reception pulse signal from time-series sine wave data of the reception pulse signal which has been A / D converted in time series by the / D conversion means ;
Time series envelope data detected from time series sine wave data
And a transmission source data storage unit for storing pulse data for each received pulse signal calculated by the pulse data calculation unit for each radio wave transmission source based on the classification by the classification unit.

In the present invention, furthermore, a detected source data storage means for storing at least the time-series envelope data of the detected radio source and its detection time,
Time-series wrapping of new radio wave sources in data storage means for each source
When絡線data is stored, the time-series envelope data to determine whether it is stored in the detection already source data storage means, the time-series envelope data said detectors already source data storage means Is already stored in
While updating the determination time as detection time of the radio wave source of the time-series envelope data, if the time-series envelope data <br/> is not stored in the detection already source data storage means, The detected source data registering means for newly storing the time-series envelope data and the determination time in the detected source data storage means.

In the present invention, the name and the time-series envelope of each radio wave transmission source to be identified are further provided.
The identification table in which data is registered in advance, the identification result storage means for storing the name of the radio wave source, and the time-series envelope data of the new radio wave source are stored in the detected source data storage means.
Each time over data is stored, the time-series envelope data to determine whether or not previously stored in the identification table,
In the case where the time-series envelope data is stored in the identification table in advance, a detected source identification means for storing the name of the radio source in the identification result storage means is provided.

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources, Frequency conversion means for converting a pulse signal to a predetermined frequency, and high- speed A / D conversion means for time-sequentially A / D converting a received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency higher than the predetermined frequency. Receiving based on the received pulse signal that has been A / D converted in time series by the high-speed A / D converter.
Features from time series envelope data calculated for each pulse signal
A characteristic data detecting means for detecting data, an identification table in which at least the name and characteristic data of the received pulse signal are registered in advance for each radio wave transmission source, and an identification table of the received pulse signal detected by the characteristic data detecting means. Determining whether or not the characteristic data is registered in the identification table in advance, and only when the characteristic data of the received pulse signal is registered in the identification table in advance, a filter means for passing the characteristic data; Data storage means for storing the characteristic data passed through the means for each radio wave transmission source.

[0015] In addition, in the present invention, identification table
Especially, the registered time-series envelope data in advance as feature data, filter means, by the feature data detecting means
The time-series envelope data of the received pulse signal detected as the signature data is correlated with each of the time-series envelope data registered in the identification table in advance, and only when there is a correlation degree equal to or more than a predetermined value, the passed through a series envelope data is intended to be stored in outgoing source each data storage means for each radio source.

[0016] In addition, in the present invention, identification table
, The previously registered rise time data as feature data, filter means, a time-based by the feature data detecting means
The rise time data of the received pulse signal detected from the column envelope data is compared with each rise time data registered in advance in the above-mentioned identification table to determine a difference. passed through a time is intended to be stored in outgoing source each data storage means for each radio source.

Further, in the present invention, <br/> the identification table, fall time data as feature data is registered in advance, the filter means, a time-based by the feature data detecting means
The difference is obtained by comparing the fall time data of the received pulse signal detected from the column envelope data and each fall time data registered in advance in the identification table, and only when there is a difference that is equal to or less than a predetermined value, As is passed through a falling time is intended to be stored in outgoing source each data storage means for each radio source.

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave sources and classifies received pulse signals for each of the radio wave sources, Frequency conversion means for converting a pulse signal to a predetermined frequency, and high- speed A / D conversion means for time-sequentially A / D converting a received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency higher than the predetermined frequency. An identification table in which at least time-series sine wave data of the received signal is registered in advance for each radio wave transmission source, and a time series of each received pulse signal A / D-converted in time series by the high-speed A / D converter. sine wave data is determined by performing a cross-correlation whether or not it is previously registered in the identification table, the time-series sine wave data of the received pulse signal is above If previously registered in a different table only, a filter means for passing the time series sine wave data, and a source for each data storage means for storing the series sine wave data for each radio source when passing through the filter means It is provided.

In the present invention, the high-speed A / D conversion means converts the received pulse signal converted to a predetermined frequency by the frequency conversion means into a time series at a frequency five times or more the predetermined frequency. It is.

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave sources and classifies received pulse signals for each of the radio wave sources, Frequency conversion means for converting a pulse signal to a predetermined frequency , and high- speed A / D conversion means for time-sequentially A / D converting a received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency higher than the predetermined frequency. Based on the received pulse signal A / D-converted in time series by the high-speed A / D converter.
The time-series envelope data calculated for each received pulse signal is
Feature data detection means for detecting a symptom data, when at least the name and the received pulse signal each radio sources
An identification table in which sequence envelope data is registered in advance,
It is determined whether the time-series envelope data of the received pulse signal detected by the feature data detecting means is registered in advance in the identification table,
When only if series envelope data is pre-registered in the identification table, taking the correlation between the time-series envelope data previously registered in time-series envelope data and the identification table of the received pulse signal, A filter means for passing the time-series envelope data only when there is a correlation degree equal to or more than a predetermined value, and a time-series envelope passing the filter means
Data storage means for storing line data for each radio wave transmission source.

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave sources and classifies the received pulse signals for each of the radio wave sources, Frequency conversion means for converting a pulse signal to a predetermined frequency, and high- speed A / D conversion means for time-sequentially A / D converting a received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency higher than the predetermined frequency. Based on the received pulse signal A / D-converted in time series by the high-speed A / D converter.
From time series envelope data calculated for each received pulse signal
Feature data detection means for detecting rise time data as feature data, and at least the name of each radio wave transmission source
And the identification table and rise time data are previously registered in the received pulse signals, the rise time of the detected said received pulse signal by said characteristic data detection means
Data to determine whether that is pre-registered in the identification table only when the rise time data of the received pulse signal is previously registered in the identification table, rise time data and the identification table of the received pulse signal Filter means for passing the rise time data through correlation with each rise time data registered in advance only when there is a correlation degree equal to or more than a predetermined value;
A data storage means for each transmission source for storing rise time data passed through the filter means for each radio wave transmission source.

Further, in the following invention, in the pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave sources and classifies the received pulse signals for each of the radio wave sources, Frequency conversion means for converting a pulse signal to a predetermined frequency , and high- speed A / D conversion means for time-sequentially A / D converting a received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency higher than the predetermined frequency. Based on the received pulse signal A / D-converted in time series by the high-speed A / D converter.
From time series envelope data calculated for each received pulse signal
Feature data detection means for detecting fall time data as feature data, and at least the name of each radio wave transmission source
And its a fall time data of the received pulse signal and the pre-registered identification table, the fall time of the received pulse signal detected by the characteristic data detection means
Data to determine whether that is pre-registered in the identification table, only when time data fall of the received pulse signal is previously registered in the identification table, the time data and the fall of the received pulse signal Filter means for correlating with each fall time data registered in advance in the identification table and passing the fall time data only when there is a correlation degree equal to or more than a predetermined value,
A transmission source data storage unit for storing fall time data passing through the filter unit for each radio wave transmission source.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a pulse signal receiving device according to a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a configuration of a pulse signal receiving apparatus according to Embodiment 1 of the present invention. In FIG. 1, 1 is an input antenna for receiving a pulse signal, 2 is a frequency conversion circuit for converting an input wave into an intermediate frequency (IF) frequency detected by the present device, and 3 is a frequency conversion circuit 2 which is a detection frequency of the present device.
Measures the amplitude value of the received pulse signal converted to the IF frequency at high-speed intervals exceeding approximately 2 GHz, which is five times or more the intermediate frequency (IF) frequency converted by
When high-speed A / D conversion circuit for A / D conversion in time series sine wave data, the digital RF be stored in chronological time series sine wave data of the digital A / D converted as a digital value for each predetermined time 4 Memory (DRFM), 5 is digital RF
Time series I de di barrel stored in the memory (DRFM) 4
This is a frequency calculation circuit that calculates the frequency value of the received pulse signal from the F sine wave data.

Reference numeral 6 denotes an envelope data detection circuit for detecting time-series envelope data indicating an envelope shape as characteristic data from the time-series IF sine wave data. Reference numeral 7 denotes an input pulse width (PW) from the time-series envelope data. ), 8 is an envelope data storage memory for storing time-sequence envelope data for each reception pulse signal at predetermined time intervals, and 9 is a comparison of time-series envelope data for each reception pulse signal. A cross-correlation circuit as classification means for judging a received pulse signal having a correlation degree between time-series envelope data that is equal to or greater than a specified value from the same radio wave transmission source; A source-specific data storage memory for storing pulse data and time-sequence envelope data of the reception pulse signal for the above-mentioned predetermined time for each of the same radio wave transmission sources based on the judgment output. A buffer memory for temporarily storing up correlation determined pulse data consisting calculated the predetermined time of the frequency value and the pulse width by the circuit 5 and PW calculation circuit 7.

Next, the operation of the pulse signal receiving apparatus according to the first embodiment will be described. First, the signal waveform of a pulse signal of a radar or the like is a sine wave as shown in FIG.
The frequency of the pulse signal is converted by the frequency conversion circuit 2 into a constant intermediate frequency (IF) frequency detected by the present apparatus.

Next, the high-speed A / D conversion circuit 3 performs digital A / D conversion to the IF frequency at a high-speed interval exceeding about 2 GHz which is five times or more the IF frequency and converted by the frequency conversion circuit 2, and receives the signal. The amplitude value of the pulse signal at minute time intervals is measured.

At this time, the amplitude value of the sine wave as shown in FIG. 2 is measured at intervals sufficiently shorter than the period of the sine wave, ie, the reciprocal of the IF frequency, and the amplitude value data is digitally expressed in the form of (tn, Pn). The data is stored in an RF memory (DRFM) 4 in time series. Note that tn indicates time, and Pn indicates the amplitude value at that time tn.

Then, the frequency calculation circuit 5 calculates the digital R
The frequency of the pulse signal is calculated based on the time-series IF sine wave data (tn, Pn) stored in the F memory (DRFM) 4 and transmitted to the buffer memory 11 and the envelope data detection circuit 6. The buffer memory 11 stores the frequency of the pulse signal.

Here, the calculation method of the frequency calculation circuit 5 will be described. As shown in FIG. 3, among the data input in time series, the amplitude is set to a predetermined threshold level (Pth).
(Tb =) before the specified time from the time (ts)
From the measured value (ts−Pb) of (ts−specified value), after the amplitude exceeds Pth, the absolute value of the amplitude becomes smaller than the predetermined threshold level (Pth), and the state that is smaller than the predetermined threshold level (Pth) is specified. The frequency is calculated by performing the Fourier transform until the time equal to or longer than the value time, that is, from time tb to time te in FIG. 3 is set as a Fourier transform (FFT) target time range. Note that the Fourier transform is a known transform, and a description thereof will be omitted.

The envelope data detection circuit 6 calculates time-series envelope data based on the frequency data of the pulse signal from the frequency calculation circuit 5, and calculates a pulse width (PW) calculation circuit 7 and an envelope data storage. Output to the memory 8.

Here, the method of calculating the time-series envelope data by the envelope data detecting circuit 6 will be briefly described. The period Tω of the sine wave calculated by the frequency calculating circuit 5, that is, the reciprocal of the frequency of the sine wave is input. Then, as shown in FIG. 4, for the time-series time-series sine wave data, for each time (t0, t1,.
Time series sine wave data (t0, P0) in ω / 2 section
-(Te, Pe) is selected as the time-series envelope data at the time, and the time-series sine wave data selected in the time-series is converted to the time-series envelope data (t0, H0)-(t
e, calculates the series envelope data when more to convert the He).

Then, the pulse width (PW) calculation circuit 7
From the time-series envelope data (t0, H0) to (te, He) calculated by the envelope data detection circuit 6, H at which the maximum amplitude is obtained
max is extracted, and the value Hi of the time-series envelope data is Hi> (H
(max-specified value), the time section of the time-series envelope data value Hi is calculated, and this time section is defined as the pulse width. Then, Tpw is output as a pulse width as shown in FIG.

In this manner, the frequency data and the pulse data, which are the pulse width data, of each received pulse signal received within the predetermined time calculated by the frequency calculation circuit 5 and the pulse width (PW) calculation circuit 7 are buffered. While stored in the memory 11, the time-series envelope data (t0, H0) to (te, He) for each reception pulse signal received within a predetermined time detected by the envelope data detection circuit 6 are envelope data. It is stored in the storage memory 8.

After a lapse of a predetermined time, that is, pulse data composed of frequency data and pulse width data for each received pulse signal received within a predetermined time, and time-sequence envelope data are stored in the buffer memory 11 or the envelope data, respectively. After being stored in the storage memory 8, the cross-correlation circuit 9
Are the time-series envelope data (t0, H0) to (te, H) of each received pulse signal stored in the envelope data storage memory 8.
e) is read out, and the degree of correlation is calculated by taking a cross-correlation between the read-out time-series envelope data. The correlation degree is a known algorithm for calculating the degree of correlation between discrete data functions, and the description of the cross-correlation algorithm is omitted here.

When the cross-correlation circuit 9 calculates the degree of correlation between all the received pulse signals input within a predetermined time,
It is determined whether or not there is a set of reception pulse signals having a correlation value equal to or greater than a specified value. Assuming that they are from the same source, buffer memory 1
The frequency data and pulse width data temporarily stored in the memory 1 and the time-series envelope data stored in the envelope data storage memory 8 are stored in the data storage memory 10 for each transmission source.
In the same radio wave transmission source.

Therefore, according to the pulse signal receiving apparatus of the first embodiment, the IF signal is subjected to high-speed A / D conversion at a frequency five times or more the IF frequency converted by the frequency conversion circuit 2, and the envelope of the IF signal is obtained. The waveform is reproduced almost exactly by the time-series IF sine wave data, the envelope data detection circuit 6 detects the time-series envelope data based on the time-series IF sine wave data, and the cross-correlation circuit 9 generates the time-series envelope. Cross-correlation between data is used to determine that the degree of correlation is equal to or greater than the specified value as that of a pulse signal from the same source. Even if pulse signals transmitted from multiple radio wave sources are mixed in the same frequency band, each data of the received pulse signal is calculated for each radio wave source according to the degree of correlation between the time-series envelope data. It is possible to detect easily separated, can be stored based on the classification.

Embodiment 2 FIG. 6 shows a configuration of the pulse signal receiving device according to the second embodiment of the present invention. In the first embodiment, the correlation is calculated by calculating the cross-correlation between the time-series envelope data for each received pulse signal. In the second embodiment, instead of the cross-correlation circuit 9, the correlation is shown in FIG. The rise time comparison circuit 12 is provided so as to detect "pulse rise time" as characteristic data different for each radio wave source from the time-series envelope data, and compare the pulse rise time for each received pulse signal. It is characterized in that it is classified into the same radio wave transmission source based on the comparison result. In the second embodiment, since the configuration other than the rise time comparison circuit 12 is the same as that of the first embodiment, the same components as those of the first embodiment shown in FIG. The same reference numerals are given and the description is omitted.

Next, the operation of the second embodiment will be described. The operation until the time-series envelope data of the received pulse signal is stored in the envelope data storage memory 8 and the frequency data and the pulse width data of the received pulse signal are stored in the buffer memory 11 is described in the first embodiment. Since it is the same as the case of, it is omitted.

The envelope data storage memory 8 stores the time-series envelope data (t0, H0) to
When (te, He) is stored, the rise time comparison circuit 1
2 is the following (1) from the time-series envelope data of each received pulse signal stored in the envelope data storage memory 8;
The time of (2) is calculated. (1) Time (tmax) when the time-series envelope data reaches the maximum amplitude level (Hmax). (2) The time (trise) when the time-series envelope data reaches the specified level (Hrise).

Note that the above (1),
The time relationship of (2) is as shown in FIG.

Next, the rise time comparison circuit 12 calculates the time difference Δtr between tmax and trise thus obtained,
The time difference Δtr is defined as a pulse rise time which is characteristic data of the pulse, and the rise times Δtr of all the received pulse signals are compared with each other, and the difference dif = | Δtr1-Δt
r2 | is calculated. Here, Δtr1 and Δtr2 indicate the rise time of each received pulse signal.

The rise time comparison circuit 12 determines whether there is a set of received pulse signals in which the difference dif between the rise times Δtr is equal to or less than a specified value, and determines the difference dif between the rise times Δtr as a specified value. The following set of received pulse signals is regarded as a pulse signal from the same source, and the frequency data and pulse width data temporarily stored in the buffer memory 11 and the envelope data stored in the envelope data storage memory 8 are stored. The stored time-series envelope data is stored in the data storage memory 10 for each transmission source for each radio wave transmission source.

Therefore, according to the pulse signal receiving apparatus of the second embodiment, the IF signal is subjected to high-speed A / D conversion at a frequency five times or more the IF frequency converted by the frequency conversion circuit 2 and the envelope of the IF signal is obtained. The waveform is reproduced almost accurately by the time-series IF sine wave data, the envelope data detection circuit 6 detects the time-series envelope data based on the time-series IF sine wave data, and the rise time comparison circuit 12 generates the time-series envelope data. Since the pulse rise times of the line data are calculated and the pulse rise times are compared with each other, and those whose pulse rise times are equal to or less than a specified value are determined to be those of the pulse signal from the same source, As in the case of the first embodiment, even if radio waves whose pulse arrival timing constantly fluctuates are mixed, or a pulse transmitted from a plurality of radio wave transmission sources in the same frequency band is used. No. is be mixed, it is possible to detect easily separate the data of the received pulse signal for each radio sources, may be stored based on the classification.

Also, in the second embodiment, focusing on the pulse rise time of the time-series envelope data for each radio wave source, the pulse rise time is set for each set of received pulse signals input by the rise time comparison circuit 12. Since the signals are classified into signals of the same radio wave transmission source by comparing the time, unlike the first embodiment, all the envelope data of the received pulse signals measured by the high-speed A / D conversion are compared between the received pulse signals. There is no need to compare and determine the degree of correlation, and processing can be performed at high speed.

Embodiment 3 FIG. 8 shows the configuration of the pulse signal receiving device according to the third embodiment of the present invention. In the second embodiment, the rise time comparison circuit 12 for each reception pulse signal is provided, and the “pulse rise time”, which is characteristic data different for each radio wave transmission source, is compared for each pair of reception pulse signals and the same radio wave is compared. Although the signal is classified into the signal of the transmission source, in the third embodiment, a fall time comparison circuit 13 is provided as shown in FIG. 8 to receive "pulse fall time" which is characteristic data different for each radio wave transmission source. It is characterized in that the same radio wave transmission source is classified for each pulse signal compared with each other. In the third embodiment, since the configuration other than the rise time comparison circuit 12 is the same as that of the first and second embodiments, the same components as those of the first embodiment shown in FIG. Are denoted by the same reference numerals, and description thereof is omitted.

Next, the operation of the third embodiment will be described. The time-series envelope data of the received pulse signal is stored in the envelope data storage memory 8, and the frequency data and pulse width data of the received pulse signal are stored in the buffer memory 11.
Are the same as those in the first and second embodiments, and therefore will not be described.

Then, the envelope data storage memory 8 stores the time-series envelope data (t0, H0) to
When (te, He) is stored, the fall time comparison circuit 13
Calculates the following time from the stored time-series envelope data (t0, H0) to (te, He) of each received pulse signal. (3) Time (tmax) when the time-series envelope data reaches the maximum amplitude level (Hmax). (4) The time series envelope data is once at the specified level (Hrise)
(Tf) before returning to the specified level (Hrise)
all)

The fall time comparison circuit 13 calculates the time difference (Δtf) between tmax and tfall thus obtained, and uses this time difference (Δtf) as the pulse fall time, which is the characteristic data of the pulse, for all the received pulse signals. Fall time Δtr
And the difference dif = | Δtr1-Δtr2 |
Is calculated. Here, Δtr1 and Δtr2 indicate the fall time of each received pulse signal.

The fall time comparison circuit 12 determines whether there is a set of received pulse signals in which the difference dif between the fall times Δtr is equal to or less than a specified value, and determines the difference dif between the fall times Δtr. Are regarded as pulse signals from the same source, and the frequency data and pulse width data of the received signal temporarily stored in the buffer memory 11 and the envelope data storage are stored. The time-series envelope data of the received signal stored in the memory 8 is stored in the data storage memory 10 for each transmission source for each radio wave transmission source.

Therefore, according to the pulse signal receiving apparatus of the third embodiment, as in the case of the second embodiment, even when radio waves whose pulse arrival timing constantly fluctuates are mixed, or in the same frequency band, Even if pulse signals transmitted from multiple radio sources are mixed, each data of the received pulse signal can be easily separated and detected for each radio source, and stored based on the classification. Can be. Further, as in the second embodiment, it is not necessary to compare all of the envelope data of the received pulse signals measured by the high-speed A / D conversion between the received pulse signals to determine the degree of correlation. Can be.

Embodiment 4 FIG. FIG. 9 shows the configuration of the pulse signal receiving device according to the fourth embodiment of the present invention. In the first embodiment, the correlation is calculated by calculating the cross-correlation between the time-series envelope data for each reception pulse signal, and the reception pulse signal is classified for each radio wave transmission source based on the correlation. However, in the fourth embodiment, the time series envelope data detected by the envelope data detection circuit 3 is not composed of sine waves of IF frequency not subjected to digital data processing such as envelope calculation, instead of time series envelope data. Using the sequence IF sine wave data, the degree of correlation between the time series IF sine wave data is calculated for each pair of received pulse signals, and the plurality of reception pulse signals received at the same timing or the like are determined based on the degree of correlation. It is characterized in that it is classified and stored for each radio wave transmission source.

More specifically, in the fourth embodiment, as shown in FIG.
A sine wave data memory 14 is provided, and a high-speed A
The time series IF sine wave data converted by the / D conversion circuit 3 is directly stored in the IF sine wave data memory 14, and other configurations are the same as those of the first embodiment. As shown in FIG.
The same reference numerals are given to the same components as those of the first embodiment shown in FIG.

Next, the operation of the fourth embodiment will be described. The pulse signal arriving via the input antenna 1, the frequency conversion circuit 2, and the high-speed A / D conversion circuit 3 is (t
n, Pn) digital RF memory (DRFM) 4
After that, the operation until the frequency calculation circuit 5, the envelope data detection circuit 6, and the pulse width (PW) calculation circuit 7 calculate each data is the same as the operation of the first embodiment.

In the fourth embodiment, however, the envelope data detection circuit 6 sends the time-sequence envelope data for calculating the pulse width to the pulse width (PW) calculation circuit 7,
It is not output to the F sine wave data memory 14.

The IF sine wave data memory 14 stores the IF sine wave data of the received pulse signal in digital RF by the high-speed A / D conversion circuit 3 when the input of the received pulse signal is completed.
The data is input from a memory (DRFM) 4 and stored for each reception pulse signal for a predetermined time.

After the IF sine wave data for each received pulse signal received within a predetermined time is stored in the IF sine wave data memory 14, the cross-correlation circuit 9 stores the IF sine wave data in the IF sine wave data memory 14. The cross-correlation of the time-series IF sine wave data of each received pulse signal is calculated to calculate the degree of correlation between all input received pulse signals. The frequency data and pulse width data of the received pulse signal temporarily stored in the buffer memory 11 and the time series of the received pulse signal stored in the envelope data storage memory 8 are regarded as being from the transmission source. The envelope data is stored in the data storage memory 10 for each transmission source for each radio wave transmission source.

Therefore, according to the pulse signal receiving apparatus of the fourth embodiment, the IF signal is subjected to high-speed A / D conversion at a frequency five times or more the IF frequency converted by the frequency conversion circuit 2, and the envelope of the IF signal is obtained. The waveform is reproduced almost exactly by the time-series IF sine wave data, and the cross-correlation circuit 9 performs cross-correlation between the time-series IF sine wave data and outputs a signal having a correlation degree equal to or more than a specified value to a pulse signal from the same source. Because it is determined that the pulse signal arrives at the same time, even if radio waves whose pulse arrival timing constantly fluctuates are mixed, or even if pulse signals transmitted from multiple radio wave sources are mixed in the same frequency band, The data of the received pulse signal can be easily separated and detected for each radio wave source based on the degree of correlation between the series IF sine wave data, and can be stored based on the classification.

Embodiment 5 FIG. FIG. 10 shows a configuration of the pulse signal receiving device according to the fifth embodiment of the present invention. In the first embodiment, the pulse data and the time-series envelope data of the received pulse signal are classified for each radio wave transmission source by taking a cross-correlation between the time-series envelope data of each received pulse signal within a predetermined time. However, in the fifth embodiment, as shown in FIG. 10, a detected source correlation circuit 15 and a detected source data memory 16 are further added to the pulse signal receiving device of the first embodiment, When pulse data and time-series envelope data for each transmission source are stored in the data storage memory 10 for each transmission source at a new timing, the radio wave transmission source is set to another timing before that, that is, another time before that. Judgment whether or not it was detected within a predetermined time, and if it is from a new radio wave source, its data and detection time are newly registered etc. Is shall.

Next, the operation of the fifth embodiment will be described. The operation from when a pulse signal of a radar or the like reaches and is input to the input antenna 1 and is stored as pulse data for each transmission source in the data storage memory 10 for each transmission source is the same as that of the first embodiment. Therefore, the subsequent operation will be described.

That is, in the fifth embodiment, a pulse signal is received within a new predetermined time, and the pulse data and the time series of the received pulse signal classified for each radio wave transmission source are stored in the data storage memory 10 for each transmission source. Once the envelope data is stored,
Based on the data of the detected radio wave source stored in the detected source data memory 16, the detected source correlation circuit 15 generates a new radio signal of the received pulse signal based on the detected radio wave. Determine if it is the source.

Specifically, the detected source correlation circuit 15
When the pulse data and the time-series envelope data of the received pulse signal classified for each radio wave source are stored in the data memory 10 for each source, first, the time-series envelope data and the detected source data are stored. The correlation with the time-series envelope data of the detected radio wave transmission source already stored in the memory 16 is calculated to calculate the degree of correlation.

Here, the detected source correlation circuit 15
Whether the degree of correlation between the time-series envelope data and the time-series envelope data of the detected radio source stored in the detected source data memory 16 is, for example, whether or not the cross-correlation circuit 9 indicates the same radio source. It is determined whether or not the correlation is equal to or greater than the specified value when the determination is made.If the correlation is determined to be equal to or greater than the specified value, the data of the radio wave source of the time-series envelope data is already detected and transmitted. Source data memory 1
6 and determines that the detection of the radio wave transmission source is a continuous detection, and updates the latest detection time of the radio wave transmission source in the detected transmission source data memory 16 as the latest detection time. To do it.

On the other hand, the degree of correlation between the time-series envelope data and all the time-series envelope data of the detected source which is already stored in the detected source data memory 16 is calculated, and all the correlations are defined. If the value is less than the value, the detected source correlation circuit 15 determines that the detected radio source is a new target, and determines the frequency data of the radio source,
The pulse width data and the pulse time series envelope data are used as a new radio wave transmission source, and the detected transmission source data memory 1 is used.
6 for storage. At this time, the determination time is also output as the latest detection time of the new radio wave transmission source attached to the above data, and stored in the detected transmission source data memory 16 as the detection time.

The detected source data memory 16
In the case where no data of the detected transmission source is stored at all, for example, in the initial state or the like, the detected transmission source correlation circuit 15 stores the frequency data and the frequency data stored for each transmission source in the data storage memory 10 for each transmission source. , Pulse width data, time-sequence envelope data, etc. are output to the detected source data memory 16 as newly detected radio source and stored. Note that the output time at this time is also attached to the data as the latest detection time, output, and stored together.

Therefore, according to the pulse signal receiving device of the fifth embodiment, a detected source correlation circuit 15 and a detected source data memory 16 are further added to the pulse signal receiving device of the first embodiment. When pulse data and time-series envelope data for each transmission source are stored in the transmission-source data storage memory 10 at another timing, the detected transmission source correlation circuit 15 stores each data of the radio transmission source. Is determined by the radio transmission source detected at another earlier timing to determine whether or not continuous detection is to be performed. If it is determined that continuous detection is to be performed, the radio transmission source in the detected source data memory 16 is determined. While only the latest detection time is updated, if it is determined that the newly detected radio transmission source is registered, each data of the radio transmission source is stored in the detected transmission source data memory 16. Since it is added together with the latest detection time, even if a pulse signal is received at a different timing and stored separately in the data storage memory 10 for each source, the detected signal stored in the detected source data memory 16 is stored. By referring to each data of the radio wave transmission source, it is possible to determine whether it is the continuous detection of the already detected radio wave transmission source or the detection of the new radio wave transmission source, and store it together with the latest detection time.

Embodiment 6 FIG. FIG. 11 shows a configuration of the pulse signal receiving device according to the sixth embodiment of the present invention. In the second embodiment, the received pulse signals are classified by radio wave transmission source by comparing the pulse rise time of each received pulse signal within a predetermined time. In the sixth embodiment, FIG. As shown, the pulse signal receiving apparatus according to the second embodiment further includes a detected transmission source rise comparison circuit 17 and a detected transmission source data memory 16 to continue the signal of the radio transmission source detected at the previous timing. It is characterized in that whether or not a detection is made is made by comparing the pulse rise time, and if the signal is from a new radio wave transmission source, its data and detection time are newly registered. That is, the relationship of the sixth embodiment with respect to the second embodiment is as follows.
This is the same as the relationship of the fifth embodiment with respect to the first embodiment.

Next, the operation of the sixth embodiment will be described. The operation from when a pulse signal of a radar or the like reaches and is input to the input antenna 1 and is stored as pulse data for each transmission source in the data storage memory 10 for each transmission source is the same as that of the first embodiment. Therefore, the subsequent operation will be described.

That is, in the sixth embodiment, a pulse signal is received within a new predetermined time, and the pulse data and time series of the received pulse signal classified for each radio wave transmission source are stored in the data storage memory 10 for each transmission source. Once the envelope data is stored,
The detected transmission source rise time comparison circuit 17 refers to the data of the detected radio transmission source already stored in the detected transmission source data memory 16 and determines whether the radio transmission source of the new received pulse signal It is determined whether or not the detected radio wave transmission source has been detected previously.

More specifically, the detected transmission source rise comparison circuit 17 stores the pulse data of the received pulse signal and the pulse rise time data classified for each radio wave transmission source in the data storage memory 10 for each transmission source. First, the pulse rise time data is compared with the pulse rise time data of the detected radio wave transmission source already stored in the detected source data memory 16, and the pulse rise time data and the detected source data memory are compared. 16 is not more than a prescribed value when the rise time comparison circuit 12 determines whether or not the same radio wave transmission source is the same, for example, the pulse rise time data of the detected radio wave transmission source already stored in 16 Judge.

If it is determined that the difference between the pulse rise time data is equal to or smaller than the specified value, the detected source rise comparison circuit 17 determines that the data of the radio wave source of the pulse rise time data has already been detected. It is stored in the transmission source data memory 16 and determines that the detection of the radio wave transmission source is continuous detection, and updates the detection time of the data in the detected transmission source data memory 16 with the determined time as the latest detection time. To do.

On the other hand, if the difference between the pulse rise time data and the pulse rise time data of all the detected transmission sources already stored in the detected transmission source data memory 16 is all larger than a specified value, the detected transmission source The source rise comparison circuit 17 determines that the radio wave source detected this time is a new target, and uses the frequency data, pulse width data, and pulse rise time data of the radio wave source as those of the new radio wave source. Is output to the detected transmission source data memory 16 and stored. At this time, the determination time is also output as the latest detection time attached to each of the data and stored in the detected transmission source data memory 16 as the detection time.

Therefore, according to the pulse signal receiving apparatus of the sixth embodiment, a detected source rising time circuit 17 and a detected source data memory 16 are further provided in the pulse signal receiving apparatus of the second embodiment. In addition, when pulse data and pulse rise time data for each transmission source are stored in the data storage memory 10 for each transmission source at a new timing, the radio transmission source detects the radio wave detected at another timing before that. It is determined whether or not continuous detection is performed for the transmission source. If it is determined that continuous detection is performed, only the latest detection time in the detected transmission source data memory 16 is updated. When it is determined that the source is registered, the pulse data of the source is added to the detected source data memory 16 together with the latest detection time. Therefore, similarly to the case of the fifth embodiment, even when a pulse signal is received at another different timing and stored separately in the data storage memory 10 for each transmission source, the pulse signal is stored in the detected transmission source data memory 16. By referring to each data of the detected radio wave source, it is possible to determine whether the detected radio wave source is a continuous detection or a new radio wave source is detected and store it together with the latest detection time. it can.

Embodiment 7 FIG. 12 shows a configuration of the pulse signal receiving device according to the seventh embodiment of the present invention. In the third embodiment, the received pulse signals are classified for each radio wave transmission source by comparing the pulse fall time of each received pulse signal within a predetermined time. However, in the seventh embodiment, FIG. As shown in the figure, the pulse signal receiving apparatus according to the third embodiment further includes a detected source fall comparison circuit 18 and a detected source data memory 16 so that the signal of the radio source detected at the previous timing is provided. Whether the detection is continuous detection is performed by comparing the pulse rise time, and if the signal is from a new radio wave transmission source, the data and the detection time are newly registered. . That is,
The relationship of the seventh embodiment with respect to the third embodiment is the same as the relationship of the fifth and sixth embodiments with respect to the first and second embodiments.

For this reason, the operation of the seventh embodiment is based on the pulse rise time, except that it is determined whether or not the signal is from the new radio wave source at the pulse fall time. This is the same as the operation of the sixth embodiment for judging whether or not it is the one.

Therefore, according to the pulse signal receiver of the seventh embodiment, the detected source fall time circuit 18 and the detected source data memory 16 are different from the pulse signal receiver of the third embodiment. Has been added,
As in the case of the sixth embodiment and the like, even when a pulse signal is received at another different timing and stored separately in the data storage memory 10 for each transmission source, the pulse signal is stored in the detected transmission source data memory 16. By referring to each data of the detected radio wave source, it can be determined whether the detected radio wave source is continuous detection or a new radio wave source is detected and stored together with the latest detection time. .

Embodiment 8 FIG. FIG. 13 shows the configuration of the pulse signal receiving device according to the eighth embodiment of the present invention. In the fourth embodiment, the received pulse signals are classified by radio wave transmission source by taking a cross-correlation between the time-series IF sine wave data of each received pulse signal within a predetermined time. Then, FIG.
As shown in FIG. 9, a detected source IF correlation circuit 19 and a detected source data memory 16 are further provided in the configuration of the fourth embodiment having the configuration shown in FIG. Determines whether the source signal is to be continuously detected based on the degree of correlation with the registered time-series IF sine wave data. If the signal is from a new radio wave source, the data and detection time are newly registered. It is characterized by doing so. That is, the relationship of the eighth embodiment with respect to the fourth embodiment is the same as that of the first to fourth embodiments.
This is the same as the relationship of each of Embodiments 5 to 7 with respect to 3.

Therefore, the operation of the eighth embodiment is based on the correlation between the detected transmission source data memory 16 and the time-series IF sine wave data. In the above-described embodiment, the determination is made based on the degree of correlation with the time-series envelope data already registered in the detected source data memory 16 except that the source is from a new radio source. 5 is the same as the operation of FIG.

Therefore, according to the pulse signal receiving apparatus of the eighth embodiment, a detected source IF correlation circuit 19 and a detected source data memory 16 are further provided in the pulse signal receiving apparatus of the fourth embodiment. In addition, when pulse data and time-series IF sine wave data for each transmission source are stored in the data storage memory 10 for each transmission source at another timing, the detected source correlation circuit 15 outputs It is determined whether or not each data is of the radio wave source detected at another timing before that and whether the continuous detection is performed. If it is determined that the continuous detection is performed, the radio wave in the detected source data memory 16 is detected. While only the latest detection time of the transmission source is updated, if it is determined that the newly detected radio transmission source is registered, the detected transmission source data memory 16 stores that radio transmission source. Since the data is added together with the latest detection time, similar to the above-described fifth to seventh embodiments, when the pulse signal is received at another different timing and stored separately in the data storage memory 10 for each transmission source. However, by referring to each data of the detected radio wave source stored in the detected source data memory 16, it is determined whether the detected radio wave source is a continuous detection or a new radio wave source is detected. And can be stored together with the latest detection time.

Embodiment 9 FIG. 14 shows the configuration of the pulse signal receiving device according to the ninth embodiment of the present invention. In the fifth embodiment shown in FIG. 10, the cross-correlation between the time-series envelope data for each received pulse signal within a predetermined time is taken, the pulse train is classified, and the continuous detection of the detected transmission source or the newly detected radio transmission source is performed. In the ninth embodiment, an identification table correlation circuit 20, an identification table memory 21a, and an identification result storage memory 22 are added to the pulse signal receiving apparatus of the fifth embodiment to perform detection. It is characterized in that each data of the radio wave transmission source registered in the completed transmission source data memory 16 is a radio transmission source registered in advance in the identification table memory 21a. Therefore, in the identification table memory 21a of the ninth embodiment, the name of each radio wave source and the radio time series envelope data of the pulse signal transmitted from each radio wave source correspond to each radio wave source. Is stored in advance.

Next, the operation of the ninth embodiment will be described. The operation until the detected pulse data of the detected radio wave source is stored in the detected source data memory 16 is the same as that of the fifth embodiment. Therefore, the subsequent operation will be described.

That is, in the ninth embodiment, it is judged that the detected radio wave source has been newly detected by the detected radio wave source correlation circuit 15, and the data of the new radio wave transmission source is stored in the detected radio wave source data memory 16. Then, the identification table correlation circuit 20 outputs the time-series envelope data of the detected source newly stored in the detected source data memory 16;
The correlation degree is calculated by correlating the pulse signal output from each radio wave source with the radio time series envelope data stored in advance in the identification table memory 21a along with the name of each radio wave source.

Then, the identification table correlation circuit 20 determines whether the calculated correlation degree is, for example, at the time of pulse train classification in the cross-correlation circuit 9 or when it is determined whether or not the detected transmission source correlation circuit 15 is a detected transmission source. It is determined whether or not the used value is equal to or more than the specified value. If the correlation is equal to or more than the specified value, it is determined that the radio wave transmission source is registered in advance in the identification table memory 21a. The name of the radio wave source set in 21a is output to the identification result storage memory 22 and stored.

Therefore, according to the ninth embodiment, an identification table correlation circuit 20, an identification table memory 21a and an identification result storage memory 22 are added to the configuration of the fifth embodiment, and Data memory 1
6 stores the data of the newly detected radio wave transmission source, the identification table correlation circuit 20 stores the data of the newly detected radio wave transmission source in the identification table memory 2.
1a, whether or not the radio wave transmission source is registered in advance is identified. If the radio transmission source is registered in advance, the name of the radio wave transmission source is registered in the identification result storage memory 22. In addition to the effects of the fifth embodiment,
It is possible to easily and quickly recognize whether or not the detected radio wave transmission source has been registered in advance.

Embodiment 10 FIG. FIG. 15 shows the configuration of the pulse signal receiving device according to the tenth embodiment of the present invention. In the sixth embodiment shown in FIG.
By comparing the pulse rise time of each received pulse signal within a predetermined time, the pulse train classification and the continuous detection of the detected transmission source or the registration of the newly detected radio transmission source were performed, but in the tenth embodiment, As shown in FIG. 15, the pulse signal receiving apparatus according to the sixth embodiment further includes an identification table rising time comparing circuit 2
3, identification table memory 21b, identification result storage memory 2
2 is added, and each data of the radio wave source registered in the detected source data memory 16 is stored in the identification table memory 21.
It is characterized in that whether or not the radio wave transmission source is registered in advance in b is identified. Therefore, the identification table memory 21b of the tenth embodiment stores the name of the radio wave source to be identified for each radio wave source and the pulse rise time data of the pulse signal transmitted from each radio wave source. Is stored in advance.

Next, the operation of the tenth embodiment will be described. The operation until the detected pulse data of the detected radio wave source is stored in the detected source data memory 16 is the same as that of the sixth embodiment. Therefore, the subsequent operation will be described.

That is, in the tenth embodiment, it is determined by the detected rise comparison circuit 15 that a new radio wave source has been detected, and the data of the new radio wave source is stored in the detected source data memory 16. Then, the identification table rise time comparison circuit 23 stores in advance the pulse rise time of the detected source newly stored in the detected source data memory 16 and the name of the radio wave source in the identification table memory 21a. The pulse rise time is compared with the calculated pulse rise time.

Then, as a result of the comparison, the difference between the pulse rise times is determined by the identification table rise time comparison circuit 23 at the time of pulse train classification in the rise time comparison circuit 12 and by the detected transmission source rise comparison circuit 17 in the detected transmission source rise comparison circuit 17. It is determined whether or not the value is equal to or less than the specified value used in the determination. If it is determined that the value is equal to or less than the specified value, it is determined that the radio wave transmission source is previously registered in the identification table memory 21b. The radio wave source name registered in the identification table memory 21b is stored in the identification result storage memory 22.
To be registered.

Therefore, according to the tenth embodiment, an identification table rise time comparison circuit 23, an identification table memory 21b and an identification result storage memory 22 are further added to the configuration of the sixth embodiment, and When the detected radio wave transmission source is registered in advance in the identification table memory 21b, the name of the radio transmission source is registered in the identification result storage memory 22, so that the effect of the sixth embodiment is added. Further, it is possible to easily and quickly recognize whether or not the detected radio wave transmission source has been registered in advance.

Embodiment 11 FIG. FIG. 16 shows the configuration of the pulse signal receiving device according to the eleventh embodiment of the present invention. In the seventh embodiment shown in FIG. 12, the pulse train classification is performed by comparing the pulse fall time of each received pulse signal within a predetermined time, and the continuous detection of the detected transmission source or the registration of the newly detected radio transmission source is performed. However, in the eleventh embodiment, as shown in FIG. 16, the configuration of the pulse signal receiving apparatus of the seventh embodiment is
4. Identification table memory 21c, identification result storage memory 2
2 is added, and each data of the radio wave source registered in the detected source data memory 16 is stored in the identification table memory 21.
c to determine whether the source is a radio wave transmission source registered in advance.

Therefore, the identification table memory 21c of the tenth embodiment stores the name of the radio wave source to be identified for each radio wave source and the pulse fall time of the pulse signal transmitted from each radio wave source. Data is stored in advance in association with the data, and the operation of the eleventh embodiment is based on only the difference between the fall time data and the rise time data.
0 is the same as the operation.

Therefore, according to the eleventh embodiment, an identification table rise time comparison circuit 23, an identification table memory 21c and an identification result storage memory 22 are further added to the configuration of the seventh embodiment, and When the detected data of the radio wave transmission source is registered in advance in the identification table memory 21c, the radio wave transmission source is registered in the identification result storage memory 22, so that the effect of the seventh embodiment can be obtained. In addition, as in the case of the first embodiment, it is possible to easily and quickly recognize whether or not the detected radio wave transmission source has been registered in advance.

Embodiment 12 FIG. FIG. 17 shows a configuration of a pulse signal receiving apparatus according to Embodiment 12 of the present invention. In Embodiment 8 shown in FIG.
Cross-correlation of time-series IF sine wave data for each received pulse signal within a predetermined time was performed to classify pulse trains and to continuously detect a detected source or to register a newly detected radio source. In the twelfth embodiment, as shown in FIG. 17, an identification table IF cross-correlation circuit 25, an identification table memory 21d, and an identification result storage memory 22 are added to the configuration of the eighth embodiment.
It is characterized in that it is determined whether or not it is a radio wave transmission source registered in advance in the detected transmission source data memory 16 and the identification table memory 21a. For this reason, the identification table memory 21d of the eleventh embodiment
, The name of the radio wave source to be identified for each radio wave source and the time-series IF sine wave data of the pulse signal transmitted from each radio wave source are stored in advance.

Next, the operation of the twelfth embodiment will be described. The operation until pulse data of the detected radio wave transmission source is stored in the detected transmission source data memory 16 is the same as that of the eighth embodiment. Therefore, the subsequent operation will be described.

That is, in the twelfth embodiment, it is determined that the detected source IF correlation circuit 19 has newly detected the radio source, and the detected source data memory 16 stores the data of the new radio source in the detected source data memory 16. When stored, the identification table IF correlation circuit 25 stores the time-series IF sine wave data of the detected transmission source newly stored in the detected transmission source data memory 16 and the name of each radio transmission source in the identification table memory 21a. In addition, the correlation between the pulse signal output from each radio wave transmission source and the time-series IF sine wave data stored in advance is calculated to calculate the degree of correlation.

Then, the identification table IF correlation circuit 25
Indicates whether the calculated degree of correlation is equal to or greater than a specified value used, for example, when classifying a pulse train in the cross-correlation circuit 9 and determining whether or not the detected source is a detected source in the detected source IF correlation circuit 19. If the radio wave source is equal to or greater than the specified value, it is determined that the radio wave source is registered in advance in the identification table memory 21d, and the radio wave source name set in the identification table memory 21d is identified. The data is output to the storage memory 22 and stored.

Therefore, according to the twelfth embodiment, an identification table IF is further added to the configuration of the eighth embodiment.
The correlation circuit 25, the identification table memory 21d, and the identification result storage memory 22 are added. If the newly detected radio wave source is registered in the identification table memory 21d in advance, the radio wave source is identified as the identification result. Storage memory 2
In addition to the effect of Embodiment 7 described above, it is possible to easily and quickly recognize whether or not the detected radio wave transmission source has been registered in advance.

Embodiment 13 FIG. FIG. 18 shows the configuration of the pulse signal receiving apparatus according to Embodiment 13 of the present invention. In the first embodiment, for a set of pulses within a predetermined time, a cross-correlation between the respective time-series envelope data is taken to classify the received pulse signal for each radio wave transmission source. Form 1
In FIG. 3, instead of the envelope data storage memory 8 and the cross-correlation circuit 9 of the first embodiment shown in FIG. 1, as shown in FIG. An identification table memory 21a in which the radio wave time-series envelope data of the pulse signal transmitted from is registered in advance and an envelope correlation filter 26 are provided, and the envelope correlation filter 26 is stored in advance in the identification table memory 21a. The time series envelope data correlated with the obtained time series envelope data and its pulse data are stored in the data memory 10 for each transmission source. In the thirteenth embodiment, the names of the radio wave sources to be detected do not necessarily have to be stored in advance in the identification table memory 21a.

Therefore, according to the thirteenth embodiment,
When the time-series envelope data calculated by the envelope data detection circuit 6 is input to the time-series envelope data cross-correlation filter 26, the time-series envelope data cross-correlation filter 26
Takes a cross-correlation with the input time-series envelope data and all the time-series envelope data of each radio wave source registered in advance in the identification table memory 21a, and as a result, the degree of correlation exceeds a specified value. Only the high pulse is passed, and the passed time-series envelope data and the pulse data of the pulse signal having the time-series envelope data temporarily stored in the buffer memory 11 are stored in the data storage memory 10 for each transmission source.
To memorize it. The calculation of the degree of correlation and the determination of the degree of correlation in the time-series envelope data cross-correlation filter 26 are the same as those in the first embodiment.

Therefore, according to the thirteenth embodiment, an identification table memory 21a and an envelope correlation filter 26 are provided instead of the envelope data storage memory 8 and the cross-correlation circuit 9 of the first embodiment. Only the time-series envelope data and pulse data that can be correlated with the time-series envelope data in the specified identification table are stored in the data storage memory 10 for each transmission source. As in the case of the first embodiment, even if a pulse train of a transmission source is formed and a radio wave whose pulse arrival timing constantly fluctuates is mixed, a reception pulse signal transmitted from a plurality of radio wave transmission sources in the same frequency band Can be easily separated and detected for each radio wave transmission source, and can be stored based on the classification.

Embodiment 14 FIG. FIG. 19 shows the configuration of the pulse signal receiving apparatus according to Embodiment 14 of the present invention. In the second embodiment, the received pulse signal is classified for each radio wave transmission source by comparing each pulse rise time with respect to a set of pulses within a predetermined time, but in the fourteenth embodiment, Instead of the envelope data storage memory 8 and the rise time comparison circuit 12 of the second embodiment shown in FIG. 6, the names of the radio wave sources to be detected and the radio wave Identification table memory 21b in which the transmitted rise time data is registered in advance in correspondence with the data.
And a rise time filter 27, and the rise time filter 27 converts the rise time data having a time difference between the rise time data previously stored in the identification table memory 21b and the pulse data and a pulse data thereof into the transmission source data. It is characterized in that it is stored in the storage memory 10.

Therefore, according to the fourteenth embodiment, the identification table memory 2 is used instead of the envelope data storage memory 8 and the rise time comparison circuit 12 of the second embodiment.
1b and a rise time filter 27 are provided, and only the time-series envelope data correlated with the time-series envelope data registered in advance in the identification table memory 21b and its pulse data are stored in the per-source data storage memory 10. As a result, a pulse train of the same radio wave source is formed at the time of passing through the rise time filter 27. As in the case of the second embodiment and the like, even when radio waves whose pulse arrival timing constantly fluctuates are mixed, Each data of the received pulse signal transmitted from a plurality of radio wave sources in the same frequency band can be easily separated and detected for each radio wave source, and
It can be stored based on the classification.

Embodiment 15 FIG. FIG. 20 shows the configuration of the pulse signal receiving apparatus according to Embodiment 15 of the present invention. In the third embodiment, the received pulse signals are classified for each radio wave transmission source by comparing the pulse fall times of the respective pairs of pulses within a predetermined time.
5, in place of the envelope data storage memory 8 and the fall time comparison circuit 12 of the third embodiment shown in FIG.
As shown in FIG. 20, an identification table memory 21c in which names of radio wave sources to be detected and fall time data transmitted from each radio wave source are registered in advance in correspondence with each other.
And a fall time filter 28, and the fall time filter 27 converts fall time data having a time difference between fall time data previously stored in the identification table memory 21c to a specified value or less and pulse data thereof. It is characterized in that it is stored in the data storage memory 10 for each transmission source.

Therefore, according to the fifteenth embodiment, the identification table memory 2 is used instead of the envelope data storage memory 8 and the fall time comparison circuit 12 of the second embodiment.
1c and a fall time filter 28 are provided, and only the time-series envelope data correlated with the time-series envelope data registered in advance in the identification table memory 21c and its pulse data are stored in the per-source data storage memory 10. Therefore, a pulse train of the same radio wave transmission source is formed at the time of passing through the fall time filter 28, and radio waves whose pulse arrival timing constantly fluctuates are mixed as in the case of the second embodiment and the like. Also, while being able to easily separate and detect each data of the received pulse signal transmitted from a plurality of radio wave sources in the same frequency band for each radio wave source,
It can be stored based on the classification.

Embodiment 16 FIG. FIG. 21 shows a configuration of a pulse signal receiving apparatus according to Embodiment 16 of the present invention. In the fourth embodiment, each time series I
The cross-correlation between the F-sine-wave data is used to classify the received pulse signals for each radio wave source. In the sixteenth embodiment, the IF-sine-wave data memory 14 and the cross-correlation circuit of the fourth embodiment are used. Instead of 9 as shown in FIG. 21, an identification table memory 21d in which names of radio wave sources to be detected and time series IF sine wave data transmitted from each radio wave source are registered in advance and , An IF sine wave correlation filter 29 is provided, and the IF sine wave correlation filter 29 has a time series IF sine wave data in which the degree of correlation with the time series IF sine wave data stored in advance in the identification table memory 21d is equal to or more than a specified value. And its pulse data are stored in the data storage memory 10 for each transmission source.

Therefore, according to the sixteenth embodiment, an identification table memory 21d and an IF sine wave correlation filter 29 are provided instead of the IF sine wave data memory 14 and the cross-correlation circuit 9 of the fourth embodiment. Since only the time-series IF sine wave data that can be correlated with the time-series IF sine wave data registered in advance in the identification table memory 21d and its pulse data are stored in the data storage memory 10 for each source, the IF sine wave correlation When passing through the filter 29, a pulse train of the same radio wave transmission source is formed. As in the case of the fourth embodiment and the like, even if radio waves whose pulse arrival timing constantly fluctuates are mixed, a plurality of Each data of the received pulse signal transmitted from the radio wave source can be easily separated and detected for each radio wave source, and the It can be stored based on.

[0107]

As described above, according to the present invention, the received pulse signal converted to a predetermined frequency to be detected by the present apparatus is A / D-converted in a time series at a frequency higher than the predetermined frequency, and the A / D conversion is performed in the time series. The time-series envelope data and the time-series
The pulse rise time and the pulse fall time obtained from the column envelope data are detected as feature data , the feature data of each pulse signal received within a predetermined time are compared with each other, and the received pulse signal is determined based on the comparison result. Are classified for each radio wave source, even if pulse signals transmitted from multiple radio wave sources are mixed at the same timing and in the same frequency band, the pulse signals are separated for each radio wave source,
In addition to being able to detect, even when radio waves whose pulse arrival timing constantly fluctuates are mixed, they can be separated and detected.

In the next invention, the amplitude value of the received pulse signal converted to a predetermined frequency to be detected by the present apparatus is A / D-converted in a time series at a frequency higher than the predetermined frequency, and the A / D conversion is performed in the time series. Calculate the degree of correlation by taking the cross-correlation between the time-series sine wave data of the D-converted received pulse signals within a predetermined time, and compare the received pulses whose correlation degree is equal to or more than a predetermined value with a pulse signal from the same source. Judging and classifying the received pulse signals for each radio wave transmission source, even if pulse signals sent from multiple radio transmission sources are mixed at the same timing and in the same frequency band, the pulse signals are transmitted to the radio transmission source In addition to being able to separate and detect each time, even if radio waves whose pulse arrival timing constantly fluctuates are mixed, they can be separated and detected.

Further, in the next invention, A
The pulse data of the frequency value and the pulse width are calculated for each received pulse signal based on the / D converted received pulse signal, and the pulse data and characteristic data are classified and stored automatically for each radio wave transmission source. Therefore, it is easy to organize each data for each radio wave transmission source.

Further, in the following invention, when pulse data and characteristic data of a new radio wave transmission source are stored in the data storage means for each transmission source, the characteristic data is stored in the detected transmission source data storage means. If the characteristic data is already stored in the detected source data storage means, only the detection time is updated, while the characteristic data is stored in the detected source data storage means. If not, the pulse data and the characteristic data and the detection time are stored in the detected source data storage means as a new detected source, so that they are received at another timing. Even if each pulse signal data from the same radio wave source exists, it can be further classified as to whether it belongs to the same radio source or not. It is possible to automatically record whether the detected radio wave source is a continuous detection or a new radio wave source, along with the detection time.This enables highly accurate radio wave transmission even in a dense radio wave density environment. Source updates can be performed.

Further, in the next invention, an identification table in which the name and its characteristic data are registered in advance for each radio wave transmission source is provided, and the pulse data of the detected transmission source is stored in the detected transmission source data storage means. Each time it is stored, it is determined whether or not the characteristic data in the pulse data is stored in advance in the identification table. If the characteristic data is stored in advance, the radio wave source is stored. When a registered radio wave transmission source is detected, its name can be automatically recorded, and even in an environment where the radio wave density is dense, the radio wave transmission source can be identified with high accuracy.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a pulse signal receiving device according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of an amplitude waveform in a pulse of a radar or the like.

FIG. 3 shows an example of input of time-series IF sine wave data and Fourier transform (F
FT) is a diagram showing a target time range and the like.

FIG. 4 is an explanatory diagram showing a method of calculating time-series envelope data by the envelope data detection circuit 6 according to the first embodiment.

FIG. 5 is a pulse width (PW) calculation circuit 7 according to the first embodiment;
FIG. 6 is an explanatory diagram showing a pulse width calculation method using the method shown in FIG.

FIG. 6 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a second embodiment of the present invention.

FIG. 7 is an explanatory diagram showing pulse rise times calculated and compared by a rise time comparison circuit 12 according to the second embodiment.

FIG. 8 is a configuration diagram showing a configuration of a pulse signal receiving device according to a third embodiment of the present invention.

FIG. 9 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a fourth embodiment of the present invention.

FIG. 10 is a configuration diagram showing a configuration of a pulse signal receiving device according to a fifth embodiment of the present invention.

FIG. 11 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a sixth embodiment of the present invention.

FIG. 12 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a seventh embodiment of the present invention.

FIG. 13 is a configuration diagram showing a configuration of a pulse signal receiving device according to an eighth embodiment of the present invention.

FIG. 14 is a configuration diagram showing a configuration of a pulse signal receiving device according to a ninth embodiment of the present invention.

FIG. 15 is a configuration diagram showing a configuration of a pulse signal receiving device according to a tenth embodiment of the present invention.

FIG. 16 is a configuration diagram showing a configuration of a pulse signal receiving device according to an eleventh embodiment of the present invention.

FIG. 17 is a configuration diagram showing a configuration of a pulse signal receiving device according to a twelfth embodiment of the present invention.

FIG. 18 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a thirteenth embodiment of the present invention.

FIG. 19 is a configuration diagram showing a configuration of a pulse signal receiving device according to a fourteenth embodiment of the present invention.

FIG. 20 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a fifteenth embodiment of the present invention.

FIG. 21 is a configuration diagram illustrating a configuration of a pulse signal receiving device according to a sixteenth embodiment of the present invention.

FIG. 22 is a configuration diagram showing a configuration of a conventional pulse signal receiving device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 input antenna, 2 frequency conversion circuit (frequency conversion means), 3 high-speed A / D conversion circuit (high-speed A / D conversion means), 4 digital RF memory, 5 frequency calculation circuit (pulse data calculation means), 6 envelope data Detection circuit (feature data detection means), 7 PW calculation circuit (pulse data calculation means), 8 envelope data storage memory, 9 cross-correlation circuit (classification means), 10 transmission source data storage memory (transmission source data storage means) ), 11 buffer memory, 12 rise time comparison circuit (classification means), 13
Fall time comparison circuit (classification means), 14 IF sine wave data memory, 15 detected source correlation circuit (detected source data registration means), 16 detected source data memory (detected source data storage means) , 17 detected source rise comparison circuit (detected source data registration means), 18 detected source fall comparison circuit (detected source data registration means), 19 detected source IF
Correlation circuit (detected source data registration means), 20 identification table correlation circuit (detected source identification means), 21
a, 21b, 21c, 21d identification table memory, 2
2 identification result storage memory (identification result storage means), 23
Identification table rise time comparison circuit (detected source identification means), 24 identification table fall time comparison circuit (detected source identification means), 25 identification table IF cross-correlation circuit (detected source identification means), 26 envelope Line data correlation filter (filter means), 27 rise time filter (filter means), 28 fall time filter (filter means), 29 IF sine wave correlation filter (filter means).

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-276579 (JP, A) JP-A-62-249519 (JP, A) JP-A-6-242222 (JP, A) JP-A-3-276 2685 (JP, A) JP-A-61-159176 (JP, A) JP-A-10-39003 (JP, A) JP-A-5-164846 (JP, A) JP-A-6-308223 (JP, A) JP-A-10-260209 (JP, A) JP-A-3-209185 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01S 7/00-7/42 G01S 13/00 -13/95 G01R 29/02

Claims (14)

(57) [Claims] 1. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal into a predetermined frequency by the frequency conversion means, and high-speed A / D conversion means for performing time-series A / D conversion on the received pulse signal at a frequency higher than the predetermined frequency. ,
Calculated for each received pulse signal based on the received pulse signal A / D converted in time series by the high-speed A / D converter.
Characteristic data detecting means for detecting the detected time-series envelope data as characteristic data, and a time system for each of the received pulse signals within a predetermined time detected by the characteristic data detecting means.
Calculate the degree of correlation by taking the cross-correlation between column envelope data
The received pulses whose correlation degree is equal to or greater than a predetermined value
Judge as the pulse signal from the signal source and
A pulse signal receiving device comprising: a classifying unit for classifying each radio wave transmitting source . 2. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the amplitude value of the received pulse signal converted to a predetermined frequency by the frequency conversion means into a time series at a frequency higher than the predetermined frequency, and high- speed A / D conversion means; A / D conversion in time series by high-speed A / D conversion means
Calculate the degree of correlation by taking the cross-correlation between the time-series sine wave data of the D-converted received pulse signals within a predetermined time, and compare the received pulses whose correlation degree is equal to or more than a predetermined value with a pulse signal from the same source. A classification means for determining and classifying the received signal for each radio wave transmission source. 3. A time-series sine wave of a received pulse signal that has been time-sequentially A / D-converted by high-speed A / D conversion means.
And pulse data calculation means for calculating the pulse data from the data for each received pulse signal, from the time-sequential sine wave data
A transmission-source data storage unit that stores the detected time-series envelope data and the pulse data for each reception pulse signal calculated by the pulse data calculation unit for each radio wave transmission source based on the classification by the classification unit. The pulse signal receiving device according to claim 1 or 2, wherein: 4. A time-series package of a detected radio wave source.
And detection completed source data storage means for storing at least 絡線data and its detection time, when the time-series envelope data of a new radio transmission source is stored in the source for each data storage means, the time-series envelope data to determine whether it is stored in the detection already source data storage means, the time series
If the column envelope data is already stored in the detection already source data storage means, the time series of the determination time
While the column envelope data is updated as the detection time of the radio wave source, if the time-series envelope data is not stored in the detected source data storage means, the time-series
4. The pulse signal receiving apparatus according to claim 3, further comprising: detected source data registration means for newly storing the envelope data and the determination time in the detected source data storage means. 5. An identification table in which the name and the time-series envelope data are registered in advance for each radio wave source to be identified, identification result storage means for storing the name of the radio wave source, Each time the time-series envelope data of a new radio wave source is stored in the detected source data storage means,
Time series envelope data to determine whether or not previously stored in the identification table, if the time-series envelope data <br/> are previously stored in the identification table, the radio signal transmitting 5. The pulse signal receiving device according to claim 4, further comprising: a detected source identification unit that stores a source name in the identification result storage unit. 6. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal into a predetermined frequency by the frequency conversion means, and high-speed A / D conversion means for performing time-series A / D conversion on the received pulse signal at a frequency higher than the predetermined frequency. ,
Calculated for each received pulse signal based on the received pulse signal A / D converted in time series by the high-speed A / D converter.
Characteristic data detecting means for detecting characteristic data from the obtained time-series envelope data, an identification table in which characteristic data of at least the received pulse signal is registered in advance for each radio wave transmission source, and the characteristic data detection It is determined whether the characteristic data of the received pulse signal detected by the means is registered in the identification table in advance, and only when the characteristic data of the received pulse signal is registered in the identification table in advance, the characteristic is determined. A pulse signal receiving apparatus comprising: filter means for passing data; and data storage means for each transmission source for storing characteristic data passing through said filter means for each radio wave transmission source. The 7. identification table registered time-series envelope data in advance as feature data, filter means, when the received pulse signal detected as the feature data by JP <br/> Features data detecting means The correlation between the sequence envelope data and each of the time-series envelope data registered in advance in the above-mentioned identification table is performed, and only when there is a correlation degree equal to or more than a predetermined value, the time-sequence envelope data is passed and the radio wave source is transmitted. claim, characterized in that to store every two shots Shin sources each data storage means 6
Pulse signal receiving apparatus according to. 8. A identification table, rise time data as feature data is registered in advance, the filter means includes a rise time data of the received pulse signal detected from the time-series envelope data by feature data detecting means the identification table by comparing the respective rise time data registered in advance obtains a difference, only when there is a difference equal to or less than a predetermined value, the passed through a rise time radio wave source every outgoing source for each data storage 7. The pulse signal receiving device according to claim 6, wherein the pulse signal is stored in a means. The 9. identification table, the fall time data as feature data is registered in advance, the filter means, the fall time of the received pulse signal detected from the time-series envelope data by feature data detecting means determining a difference data and previously registered each falling time to the identification table by comparing the data, only when there is a difference equal to or less than a predetermined value, outgoing every radio transmission source is passed through the fall time 7. The pulse signal receiving device according to claim 6, wherein the pulse signal is stored in a data storage unit for each source. 10. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal converted to a predetermined frequency by the frequency conversion means, and high- speed A / D conversion means for performing time-series A / D conversion at a frequency higher than the predetermined frequency; An identification table in which at least time-series sine wave data of the received signal is registered in advance for each radio wave transmission source, and a time-series sine wave of each received pulse signal that has been time-sequentially converted by the high-speed A / D conversion means. data is determined by performing a cross-correlation whether or not it is previously registered in the identification table, pre-registered in time-series sine wave data is the identification table of the received pulse signal Only if it is, the time-series
A filter means for passing the sine wave data, the pulse signal receiving apparatus characterized by comprising a source for each data storage means for storing the series sine wave data for each radio source when passing through the filter means. 11. The high-speed A / D conversion means performs time-series A / D conversion of the received pulse signal converted to a predetermined frequency by the frequency conversion means at a frequency five times or more the predetermined frequency. any of claims 1 to 10
Pulse signal receiving apparatus according to an item or. 12. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal converted to a predetermined frequency by the frequency conversion means, and high- speed A / D conversion means for performing time-series A / D conversion at a frequency higher than the predetermined frequency; Based on the received pulse signals that have been A / D converted in time series by the high-speed A / D conversion means ,
Detects calculated time-series envelope data as feature data
Feature data detection means for, at least for each radio sources
Chronological hull of its name and identification table in which the time-series envelope data is previously registered in the received pulse signal, the characteristic data detected by the detecting means the above received pulse signal
Determining whether the絡線data is pre-registered in the identification table, if the time-series envelope data <br/> of the received pulse signal is previously registered in the identification table only, the received pulse signal Filter means for correlating the time-series envelope data with the time-series envelope data previously registered in the identification table and passing the time-series envelope data only when there is a correlation degree equal to or greater than a predetermined value. A pulse signal receiving device comprising : a time-series envelope data that has passed through the filter means; 13. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal converted to a predetermined frequency by the frequency conversion means, and high- speed A / D conversion means for performing time-series A / D conversion at a frequency higher than the predetermined frequency; Based on the received pulse signals that have been A / D converted in time series by the high-speed A / D conversion means ,
Rise time data from the calculated time-series envelope data
Feature data detecting means for detecting the data as feature data;
An identification table in which at least the name and the rise time data of the received pulse signal are registered in advance for each radio wave transmission source, and the rise time data of the received pulse signal detected by the feature data detecting means are stored in the identification table in advance. determining whether or not registered, only if the rise time data of the received pulse signal is previously registered in the identification table, the received pulse signal falling
Taking the correlation between the rising time data and the identification table registered in advance each rising time data, if there is a degree of correlation greater than or equal to a predetermined value only, the rise time de
Filter means for passing over data pulse signal receiving apparatus characterized by comprising a source for each data storage means for storing the rise time data which has passed through said filter means for each radio source. 14. A pulse signal receiving apparatus which receives pulse signals respectively transmitted from a plurality of radio wave transmitting sources and classifies the received pulse signals for each of the radio wave transmitting sources. Frequency conversion means for converting the received pulse signal converted to a predetermined frequency by the frequency conversion means, and high- speed A / D conversion means for performing time-series A / D conversion at a frequency higher than the predetermined frequency; Based on the received pulse signals that have been A / D converted in time series by the high-speed A / D conversion means ,
Fall time data from the calculated time-series envelope data
Feature data detecting means for detecting the data as feature data;
At least the name and the identification table and fall time data of the received pulse signal is previously registered, fall time data the identification table of the received pulse signal detected by the characteristic data detection means for each radio sources determining whether a previously registered, only when the time data fall of the received pulse signal is previously registered in the identification table, the received pulse signal falling
Taking the correlation between Chi fall time data and the identification table registered in advance each fall time data, only when there is a degree of correlation equal to or greater than a predetermined value, time de-falling the trailing
Filter means for passing over data pulse signal receiving apparatus characterized by comprising a source for each data storage means for storing for each radio source time data fall has passed through the filter means.