JP2937050B2 - Direction measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an azimuth measuring device for capturing and azimuthally measuring a frequency hopping communication signal radio wave.

[0002]

2. Description of the Related Art FIG. 18 shows a configuration of a conventional reception monitor device disclosed in Japanese Patent Laid-Open No. 4-280130.
Is a receiving antenna for receiving radio waves in the real world, 26 is a sweep receiver, 27 is a signal extraction circuit for extracting only frequency hopping waves, and 28 is a display for displaying the result extracted by 27.

Next, the operation will be described. Radio waves in the real world are received by the antenna 1 and input to the sweep receiver 26. The sweep receiver 26 sweeps a designated frequency band and detects a signal existing in the swept band. The receiving bandwidth is about the same as a normal receiver, and covers a wide frequency range by sweeping. The signal extraction circuit 27 includes a sweep receiver 26
Extracts only the frequency hopping wave from the output of
8 is displayed. The signal extraction circuit 27 extracts frequency hopping signal radio waves having equal frequency intervals, in other words, frequency differences that are integral multiples of the minimum frequency difference. Conversely, noise that does not have such properties and ordinary signal radio waves are removed.

FIG. 19 shows the configuration of a conventional azimuth measuring apparatus. In FIG.
Is a conventional azimuth measuring device, and 6 is a processor for statistically processing the azimuth measurement result.

Next, the operation will be described. Radio waves in the real world are received by the antenna 1 and input to the azimuth measuring device 4. The azimuth measuring device 4 measures and outputs the azimuth a predetermined number of times for a signal radio wave having the same frequency as the set tuning frequency. The processor 6 statistically processes the azimuth measurement results output from the azimuth measuring device 4 a number of times to obtain highly accurate azimuth measurement results.

[0006]

Since the conventional reception monitoring device is configured as shown in FIG. 18 , it is possible to extract a frequency hopping wave based on the frequency of a received signal radio wave, but cannot measure a direction. As a result, there has been a problem that a plurality of stations communicating using the same frequency cannot be separated. Further, since the conventional azimuth measuring device is configured as shown in FIG. 19, it is unlikely that an azimuth measurement result can be obtained for a signal radio wave having the same frequency transmission duration such as a frequency hopping wave, and the azimuth measurement result can be obtained. In this case, the azimuth measurement can be performed only once or several times, so that only an azimuth measurement result with low accuracy can be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to measure the direction of a frequency hopping signal radio wave with a very short transmission time of the same frequency with high accuracy, and perform communication using the same frequency. It is an object to obtain an azimuth measuring device capable of separating a plurality of stations.

Further, the purpose of the present invention is to further improve the azimuth measurement accuracy, and includes a normal communication wave, a signal wave of a different level, a signal wave of a different hopping speed, and a normal communication wave existing in the actual airspace.
It is an object of the present invention to obtain an azimuth measuring device capable of extracting a target frequency hopping signal radio wave from various signal radio waves such as signal radio waves having different occupied bandwidths and performing azimuth measurement with high accuracy.

[0009]

An azimuth measuring apparatus according to the present invention comprises: an antenna for capturing a frequency hopping radio wave arriving from a radio wave generating source; amplifying means for amplifying a reception signal received by the antenna; Distribution means for distributing an output signal from the means, a plurality of azimuth measurement means for outputting coarse-accuracy azimuth measurement information on a radio wave source based on the output signal from the distribution means, and coarse accuracy from these azimuth measurement means Synthesizing means for synthesizing the azimuth measurement information and outputting the coarse-accuracy synthesized azimuth information; and statistically combining the coarse-accuracy synthesized azimuth information from the synthesizing means as an azimuth measurement result for the target transmitting station.
Processing means for outputting high-precision azimuth information by processing.

In addition to the azimuth measuring means, there are provided azimuth measuring means with a plurality of level monitor outputs for outputting coarse-accuracy azimuth measurement information and a signal level relating to the radio wave source based on an output signal from the distribution means. Accumulation means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with a level monitor output; level measuring means for measuring the reception level output from the azimuth measuring means with a level monitor output; and reception from the level measuring means A level determining means for determining whether a received signal is from a radio wave generating source based on the level measurement information, and a control signal for controlling the input / output of the storage means based on the received level determining information from the level determining means. Further comprising a storage control unit for performing coarse-accuracy azimuth measurement information from the storage unit based on a control signal from the storage control unit. And it outputs the formed unit.

In addition to the azimuth measuring means, a plurality of azimuth measuring means with a level monitor output for outputting coarse-accuracy azimuth measurement information and a signal level relating to the radio wave source based on an output signal from the distribution means are provided. Accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with a level monitor output, and a plurality of time measurements for measuring the transmission duration of an incoming radio wave based on the reception level output from the azimuth measuring means with a level monitor output Means, time determination means for determining whether the received signal is from a radio wave source based on transmission time measurement information from the time measurement means,
Storage control means for outputting a control signal for controlling the input / output of the storage means based on the time determination information from the time determination means. It outputs the measurement information to the synthesizing means.

Also, a plurality of azimuth measuring means with occupied bandwidth output for outputting coarse-accuracy azimuth measurement information and occupied bandwidth measurement information on the radio wave source based on an output signal from the distribution means in place of the azimuth measuring means. Along with the accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with occupied bandwidth output, and receiving radio signals based on the occupied bandwidth measurement information output from the azimuth measuring means with occupied bandwidth output. Occupied bandwidth determining means for determining whether the signal belongs to a source, and storage control means for outputting a control signal for controlling input / output of the storage means based on occupied bandwidth determination information from the occupied bandwidth determining means. And outputting coarse-accuracy azimuth measurement information from the storage means to the synthesizing means based on a control signal from the storage control means.

Also, a plurality of azimuth measuring means with modulation method analysis output for outputting coarse-accuracy azimuth measurement information on a radio wave generating source and outputting modulation method analysis information based on an output signal from the distribution means in place of the azimuth measuring means. A storage means for accumulating coarse-accuracy azimuth information from the azimuth measuring means with the modulation scheme analysis output, and a reception signal generated based on the modulation scheme analysis information output from the azimuth measurement means with the modulation scheme analysis output. A modulation method determining means for determining whether the signal belongs to a source, and a storage control means for outputting a control signal for controlling input / output of the storage means based on the modulation method analysis information from the modulation method determining means. The coarse accuracy azimuth measurement information is output from the storage means to the synthesizing means based on a control signal from the storage control means.

An accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means; and an azimuth determination for judging whether or not the received signal is from a radio wave source based on the coarse-accuracy azimuth measurement information from the azimuth measuring means. Means, and storage control means for outputting a control signal for controlling input / output of the storage means based on the direction determination information from the direction determination means, further comprising:
The coarse accuracy azimuth measurement information is output from the storage means to the synthesizing means based on a control signal from the storage control means.

Also, a plurality of azimuth measurement units for outputting coarse-accuracy azimuth measurement information, signal level, occupied bandwidth measurement information, and modulation method analysis information relating to a radio wave source based on an output signal from the distribution unit instead of the azimuth measurement unit. Along with analysis means, accumulating means for accumulating coarse-accuracy azimuth measurement information from these azimuth measurement analysis means, level measurement means for measuring the reception level output from the azimuth measurement analysis means, and azimuth measurement analysis means Time measurement means for measuring the transmission duration of the arriving radio wave based on the output reception level, and judgment criterion information as to whether the received signal is of a radio wave source based on the reception level measurement information from the level measurement means Based on the transmission time measurement information from the time measurement means, and determines whether the received signal is from the radio wave source. Time criterion means for outputting all criterion information, and an occupied band for outputting criterion information about whether or not the received signal is from the radio wave source based on the occupied bandwidth measurement information output from the azimuth measurement analysis means Width determination reference means, modulation method analysis determination reference means for outputting determination reference information as to whether a received signal is from a radio wave source based on modulation method analysis information output from the direction measurement analysis means, and direction measurement analysis means. Azimuth determination reference means for outputting determination criterion information as to whether the received signal is from the radio wave source based on the coarse azimuth measurement information from the means,
Integrated judgment for judging whether a received signal is from a radio wave generating source based on judgment reference information from level judgment reference means, time judgment reference means, occupied bandwidth judgment reference means, modulation scheme judgment reference means and azimuth judgment reference means. Means, and a storage control means for outputting a control signal for controlling the input / output of the storage means based on the determination information from the integrated determination means, wherein the storage means is provided based on the control signal from the storage control means. The coarse direction measurement information is output to the synthesizing means.

[0016]

In the azimuth measuring apparatus according to the present invention, the antenna captures the frequency hopping radio wave arriving from the radio wave generating source, and the amplifying means amplifies the received signal received by the antenna, and the output signal from the amplifying means. Is distributed by the distribution means. The plurality of direction measuring means output coarse direction measurement information on the radio wave source based on the output signal from the distribution means, and the synthesizing means synthesizes the coarse direction measurement information from the direction measuring means to obtain coarse accuracy direction information. Is output. The processing means uses the coarse-accuracy combined azimuth information from the combining means as a target transmitting station.
And outputs high-accuracy azimuth information by performing statistical processing as an azimuth measurement result with respect to.

The azimuth measuring means with a plurality of level monitor outputs outputs coarse azimuth measuring information and signal level related to the radio wave source based on the output signal from the distribution means, and the storage means stores the coarse azimuth measuring information. The accumulated level is measured by the level measuring means. The level determining means determines whether the received signal is from a radio wave generating source based on the received level measurement information. The accumulation control means outputs a control signal for controlling the input / output of the accumulation means based on the reception level judgment information from the level judgment means, and outputs the coarse azimuth measurement information from the accumulation means to the synthesis means.

The azimuth measuring means with level monitor output outputs coarse azimuth measurement information and signal level related to the radio wave source based on the output signal from the distribution means, and the storage means accumulates the coarse azimuth measurement information. . The time measurement means measures the transmission duration of the arriving radio wave based on the reception level, and the time determination means determines whether the received signal is from the radio wave generation source based on the transmission time measurement information. The accumulation control means outputs a control signal for controlling the input / output of the accumulation means based on the time determination information, and outputs the coarse direction measurement information from the accumulation means to the synthesis means.

The azimuth measuring means with occupied bandwidth output outputs coarse azimuth measurement information and occupied bandwidth measurement information relating to the radio wave source based on the output signal from the distribution means. Store measurement information. The occupied bandwidth determination means determines whether the received signal is from the radio wave source based on the occupied bandwidth measurement information, and the storage control means controls input / output of the storage means based on the occupied bandwidth determination information. The control signal is output, and the coarse-accuracy azimuth measurement information is output from the storage means to the synthesis means.

The azimuth measuring means with modulation scheme analysis output outputs coarse azimuth measurement information on the radio wave generation source based on the output signal from the distribution means and outputs modulation scheme analysis information. Store information. The modulation method determination means determines whether the received signal is from a radio wave source based on the modulation method analysis information, and the accumulation control means
A control signal for controlling the input and output of the storage means is output based on the modulation scheme analysis information, and the coarse-accuracy azimuth measurement information is output from the storage means to the synthesis means based on the control signal from the storage control means.

The accumulating means accumulates coarse azimuth direction measurement information from the azimuth measuring means, and the azimuth determining means determines whether the received signal is of a radio wave source based on the coarse accuracy azimuth measuring information from the azimuth measuring means. The storage control means outputs a control signal for controlling the input / output of the storage means based on the direction determination information from the direction determination means, and outputs the coarse-accuracy direction measurement information from the storage means to the synthesis means. .

The plurality of azimuth measurement / analysis means output coarse accuracy azimuth measurement information, signal level, occupied bandwidth measurement information, and modulation scheme analysis information on the radio wave source based on the output signal from the distribution means, and store the information. The means stores coarse orientation measurement information. The level measuring means measures the reception level, and the time measuring means measures the transmission duration of the incoming radio wave based on the reception level. The level criterion means outputs criterion information about whether the received signal is from the radio wave source based on the reception level measurement information, and the time criterion means is based on the transmission time measurement information from the time measurement means. It outputs criterion information as to whether the received signal is from a radio wave source. The occupied bandwidth determination reference means outputs determination reference information as to whether the received signal is from the radio wave source based on the occupied bandwidth measurement information, and the modulation scheme analysis determination criterion is based on the modulation scheme analysis information. It outputs criterion information as to whether the received signal is from a radio wave source. The azimuth determination reference means outputs, based on the coarse-accuracy azimuth measurement information, determination criterion information as to whether or not the received signal is from a radio wave source. The integration determining means determines whether the received signal is from the radio wave source based on the determining reference information from the level determining reference means, the time determining reference means, the occupied bandwidth determining reference means, the modulation method determining reference means, and the azimuth determining reference means. Judge. The accumulation control means outputs a control signal for controlling the input / output of the accumulation means based on the determination information, and outputs the coarse-accuracy azimuth measurement information from the accumulation means to the synthesis means.

[0023]

【Example】

Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an antenna for taking a signal wave in the real world, 2 denotes an amplifier for amplifying a broadband high frequency, 3 denotes a distributor for distributing the amplified high frequency, 4 denotes a direction measuring device, and 5 denotes a direction measuring device. A synthesizer 6 for synthesizing the azimuth measurement results is a processor for statistically processing the synthesis results and outputting highly accurate azimuth information.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring devices 4 tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 4 measures the azimuth of a frequency hopping signal radio wave having an extremely short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The outputs of several azimuth measuring devices 4 are shown in FIGS.
FIG. 2A shows the output of one azimuth measuring instrument, for example, and FIG. 2B shows the output of another azimuth measuring instrument. The synthesizer 5 synthesizes the coarse precision orientation results using the measurement time as a key. Since a frequency hopping wave is not transmitted at a plurality of frequencies at the same time, the combined result can be regarded as a measurement result of azimuth measurement of a single wave a plurality of times as shown in FIG. Processor 6
, The plurality of coarse-accuracy azimuth measurement results are statistically processed as azimuth measurement results for one target transmitting station to obtain high-accuracy azimuth information. Statistical processing is based on a conventional method.
FIG. 4 conceptually shows the operation of the synthesizer and the processor. The azimuth measurement results distributed over a wide range on the frequency axis are collected on the right line on the left side of the figure, and the azimuth distribution state is shown. Is shown.

As described above, it is possible to treat the results of coarse direction measurement at different frequencies as if a plurality of coarse direction measurements at the same frequency were performed. Can be obtained.

Embodiment 2 FIG. The first embodiment is effective when only the signal radio wave of the target transmitting station exists in the airspace, but is effective when there is a signal radio wave other than the target transmitting station in the airspace, or when the influence of the non-target signal exists in the azimuth direction. It is necessary to process so that it does not mix with the measurement information. In the second embodiment, for the purpose of extracting the target wave, when the expected reception level of the target transmission station is given, and when the expected reception level of the target transmission station is not given in advance, the reception level of the target transmission station is determined from the measured reception level. The configuration of FIG. 5 is adopted so that the level is estimated and compared with the estimated value to exclude signal radio waves other than the target transmitting station.

In FIG. 5, reference numeral 7 denotes an azimuth measuring instrument having a level monitor output having a reception level monitor output in addition to azimuth measurement information, and 8 denotes a level measurement for measuring a reception level using the reception level monitor output of the azimuth measuring instrument. The measuring unit 9 compares the measured level with a predetermined expected receiving level of the target transmitting station, or inputs the receiving level measured by the level measuring device 8, and determines the receiving level of the target transmitting station from a plurality of level measurement values. A level determiner for estimating, comparing with the estimated value and determining whether or not the received signal radio wave belongs to the target transmitting station;
0 is a storage controller for controlling whether to output or reject coarse-accuracy azimuth information stored in 11 based on the determination result of the level determiner, and 11 is a storage controller for determining coarse-accuracy azimuth information by the determiner. And a storage device for storing azimuth information. In the figure, components having the same reference numerals as those in FIG. 1 have the same functions as those in the first embodiment.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring instruments 7 with level monitor outputs tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 7 with a level monitor output measures the azimuth of a frequency hopping signal radio wave having a very short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The output coarse accuracy direction information is temporarily stored in the storage 11 and waits for determination by the level determination unit 9. In addition, the reception level monitor output of the azimuth measuring device 7 with a level monitor output for the signal radio wave for which the azimuth measurement is performed is input to the level measuring device 8, and the result is compared with the expected reception level of the target transmitting station by the decision device 9, Alternatively, the reception level of the target transmitting station is estimated from the plurality of input received level measurement results, and the received signal wave is compared with the estimated value to determine whether the received signal radio wave belongs to the target transmitting station. This is shown in FIG. Further, as shown in FIG. 7, the reception level of the target transmitting station is statistically processed as shown in FIG. 7 to extract the signal radio wave of the target transmitting station. The storage controller 10 receives the output of the level determiner 9 and controls whether the stored azimuth information is output to the synthesizer 5 or is rejected with respect to the storage 11, and as shown in FIG. Is output to the synthesizer. The coarse direction information of only the signal radio wave of the target transmitting station extracted in this way is synthesized by the synthesizer 5 in the order of generation, and processed by the processor 6.
, Statistically processing a plurality of coarse-accuracy azimuth measurement information as azimuth measurement results for a series of target transmitting stations to obtain high-accuracy azimuth information.

As described above, a signal radio wave having the same frequency as the frequency used by the target transmitting station exists in the actual airspace, and the reception level at the azimuth measurement position is lower than the signal radio wave of the target transmitting station. If there is a difference, the level difference can be detected, and the target wave can be extracted. As a result, a more accurate direction measurement result of the frequency hopping signal radio wave is obtained.

Embodiment 3 FIG. In the third embodiment, the target wave extraction performed using the reception level in the second embodiment is performed using the transmission duration. If the expected transmission duration of the target transmission station is given in advance, if the expected transmission duration of the target transmission station is not given in advance, the transmission duration of the target transmission station is estimated from the measured value of the transmission duration, The configuration shown in FIG. 8 is adopted so that signal radio waves other than those of the target transmitting station are excluded from the estimated values.

In FIG. 8, reference numeral 12 denotes a time measuring device for measuring the transmission duration by using the reception level monitor output of the azimuth measuring device 7 with the level monitor output assuming that transmission is being performed when the reception level is equal to or higher than a given threshold. , 13 compares the measured transmission time with a predetermined expected transmission time of the target transmitting station—frequency hopping rate—or inputs the transmission duration measured by the time measuring device 12, and outputs a plurality of transmission duration measurement values. This is a time determination unit that estimates the transmission duration of the target transmitting station, compares it with the estimated value, and determines whether the received signal radio wave belongs to the target transmitting station. In addition,
In the drawings, those having the same reference numerals as those in FIGS. 1 and 5 are the first and second embodiments.
Shall have the same functions as those in.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring instruments 7 with level monitor outputs tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 7 with a level monitor output measures the azimuth of a frequency hopping signal radio wave having a very short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The output coarse accuracy direction information is temporarily stored in the storage 11 and waits for the determination by the time determination unit 13. Further, when the reception level monitor output of the azimuth measuring device 7 with the level monitor output for the signal radio wave for which the azimuth measurement is performed is input to the time measuring device 12 and the reception level is equal to or higher than the given threshold as shown in FIG. Measure transmission duration as transmitting. The measured transmission time is input to the time determiner 13 and is compared with a predetermined expected transmission duration of the target transmitting station-frequency hopping speed-or based on each of the plurality of input transmission duration measurement values. The transmission duration of the transmitting station is estimated and compared with the estimated value to determine whether or not the received signal radio wave belongs to the target transmitting station. This is shown in FIG. Also, the transmission duration of the target transmitting station is estimated by statistically processing the measured values as shown in FIG. The storage controller 10 receives the output of the time determiner 13 and controls whether the stored azimuth information is output to the synthesizer 5 or is rejected with respect to the storage 11, and as shown in FIG. The azimuth measurement result of the signal radio wave that has entered the transmission duration estimation range B is output to the synthesizer. The coarse direction information of only the signal radio wave of the target transmitting station thus extracted is synthesized by the synthesizer 5 in the order of generation,
In the processor 6, a plurality of coarse-accuracy azimuth measurement information are statistically processed as azimuth measurement results for a series of target transmitting stations to obtain high-accuracy azimuth information.

As described above, a signal radio wave having the same frequency as the frequency used by the target transmitting station exists in the actual airspace, and there is a difference in transmission duration from the signal radio wave of the target transmitting station. In this case, the time difference can be detected, and the target wave can be extracted.
As a result, a more accurate direction measurement result of the frequency hopping signal radio wave is obtained.

Embodiment 4 FIG. In the fourth embodiment, the target wave extraction performed in the second embodiment using the reception level and the transmission duration in the third case is performed using the occupied bandwidth. If the expected occupied bandwidth of the target transmitting station is given in advance, and if the expected occupied bandwidth of the target transmitting station is not given in advance, the occupied bandwidth of the target transmitting station is estimated from the measured value of the occupied bandwidth. The configuration shown in FIG. 12 is adopted so as to exclude signal radio waves other than those of the target transmitting station in comparison with the estimated value.

In FIG. 12, reference numeral 14 denotes an azimuth measuring instrument having an occupied bandwidth measuring function having an occupied bandwidth measuring function in addition to azimuth measuring information, and 15 denotes an occupied bandwidth measured by an azimuth measuring instrument having an occupied bandwidth measuring function. And the expected occupied bandwidth of the target transmitting station given in advance, or input the measured occupied bandwidth, estimate the occupied bandwidth of the target transmitting station from a plurality of occupied bandwidth measurements, and compare with the estimated value. An occupied bandwidth determiner that determines whether the received signal radio wave belongs to the target transmitting station. 1 and 5 have the same functions as those in the first and second embodiments.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring devices 14 having a function of measuring an occupied bandwidth tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 14 with an occupied bandwidth measuring function measures the azimuth of a frequency hopping signal radio wave having an extremely short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The outputted coarse-accuracy azimuth information is temporarily stored in the accumulator 11, and waits for the determination by the occupied bandwidth determiner 15. In addition, the azimuth measuring device 14 with the occupied bandwidth measurement function for the signal radio wave for which the azimuth measurement has been performed.
Is input to the occupied bandwidth determiner 15. The occupied bandwidth determiner 15 compares the occupied bandwidth of the target transmitting station with the expected occupied bandwidth of the target transmitting station, or estimates the occupied bandwidth of the target transmitting station from each of a plurality of input occupied bandwidth measurement values, and compares the estimated value with the estimated value. Then, it is determined whether or not the received signal radio wave belongs to the target transmitting station. This is shown in FIG. Further, the occupied bandwidth of the target transmitting station is estimated by statistically processing the measured values as shown in FIG. Storage controller 10
Receives the output of the occupied bandwidth determiner 15 and controls whether the azimuth information stored in the accumulator 11 is output to the combiner 5 or rejected. As shown in FIG. The azimuth measurement result of the signal radio wave having entered the width estimation range C is output to the synthesizer. The coarse direction information of only the signal radio wave of the target transmitting station thus extracted is synthesized by the synthesizer 5 in the order of generation, and the processor 6 converts a plurality of coarse direction measuring information as a series of direction measurement results for the series of target transmitting stations. Statistical processing to obtain high-accuracy azimuth information.

As described above, a signal radio wave having the same frequency as the frequency used by the target transmitting station exists in the actual airspace, and there is a difference in the occupied bandwidth between the signal radio wave of the target transmitting station and the signal radio wave. In this case, the difference between the bandwidths can be detected, and the target wave can be extracted. As a result, a more accurate direction measurement result of the frequency hopping signal radio wave is obtained.

Embodiment 5 FIG. In the fifth embodiment, the target wave extraction performed in the second embodiment using the reception level, the transmission duration at 3, the occupied bandwidth at 4, and the modulation scheme analysis is performed. If the expected modulation scheme of the target transmitting station is given in advance, and if the expected modulation scheme of the target transmitting station is not given in advance, the modulation scheme of the target transmitting station is estimated from the modulation scheme analysis result and compared with the estimation result. The configuration shown in FIG. 15 is adopted so as to eliminate signal radio waves other than the target transmitting station.

In FIG. 15, reference numeral 16 denotes an azimuth measuring instrument having a modulation method analysis function having a modulation method analysis function for judging a modulation method such as AM, FM, or PSK in addition to azimuth measurement information.
Reference numeral 17 compares a modulation scheme analyzed by an azimuth measuring instrument with a modulation scheme analysis function with a predetermined expected modulation scheme of the target transmission station, or inputs the analyzed modulation scheme and inputs the analyzed modulation scheme to obtain a target transmission station based on a plurality of modulation scheme analysis results. This is a modulation scheme determiner that estimates a modulation scheme, compares it with the estimation result, and determines whether the received signal radio wave belongs to the target transmitting station. 1 and 5 have the same functions as those in the first and second embodiments.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring devices 16 having a modulation system analysis function tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 16 with a modulation method analysis function measures the azimuth of a frequency hopping signal radio wave having an extremely short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The output coarse azimuth information is temporarily stored in the accumulator 11 and the modulation method discriminator 1
Wait for the judgment of 7. In addition, a modulation method analysis result output of the azimuth measuring device 16 with a modulation method analysis function, for example, PSK is input to the modulation method determiner 17 for the signal radio wave for which the direction measurement is performed. The modulation scheme determiner 17 compares the estimated modulation scheme of the target transmission station, for example, PSK, or estimates the modulation scheme of the target transmission station from each of a plurality of input modulation scheme analysis results, and compares it with the estimation result. It is determined whether the received signal wave is from the target transmitting station. The storage controller 10 receives the output of the modulation scheme determiner 17 and controls whether the azimuth information stored in the storage 11 is output to the combiner 5 or rejected. The coarse direction information of only the signal radio wave of the target transmitting station thus extracted is synthesized by the synthesizer 5 in the order of generation, and the processor 6 converts a plurality of coarse direction measuring information as a series of direction measurement results for the series of target transmitting stations. Statistical processing to obtain high-accuracy azimuth information.

As described above, when a signal radio wave having the same frequency as the frequency used by the target transmitting station exists in the actual airspace and the modulation method is different from that of the target transmitting station, this difference can be detected. The target wave can be extracted. As a result, a more accurate direction measurement result of the frequency hopping signal radio wave is obtained.

Embodiment 6 FIG. In the sixth embodiment, the target wave is extracted using the azimuth measurement result, which is performed using the modulation method in the second embodiment at the reception level, the transmission duration at 3, the occupied bandwidth at 4, the occupation bandwidth at 5, and the modulation method. FIG. 16 shows the configuration.

In FIG. 16, reference numeral 18 denotes an azimuth measurement result input by the azimuth measuring device 4, estimates the azimuth of the target transmitting station from a plurality of azimuth measurement results, compares the estimated value with the estimated value, and converts the received signal wave into the target transmission signal. It is an azimuth determiner for determining whether or not it belongs to a station. 1 and 5 have the same functions as those in the first and second embodiments.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of azimuth measuring devices 4 tuned to the hopping frequency of the target transmitting station. The azimuth measuring device 4 measures the azimuth of a frequency hopping signal radio wave having an extremely short transmission duration at each tuning frequency, and outputs coarsely accurate azimuth information. The output coarse-accuracy azimuth information is temporarily stored in the accumulator 11 and waits for the judgment by the azimuth determinator 18. On the other hand, the azimuth measuring device 4 inputs the coarse-accuracy azimuth information to the azimuth determiner 18, estimates the azimuth of the target transmitting station from a plurality of azimuth measurement results, compares the estimated value with the estimated value, and transmits the received signal radio wave to the target transmission station. Determine if it belongs to the station. The storage controller 10 receives the output of the direction determiner 18 and controls whether the direction information stored in the storage 11 is output to the synthesizer 5 or rejected. The coarse direction information of only the signal radio wave of the target transmitting station thus extracted is synthesized by the synthesizer 5 in the order of generation, and the processor 6 converts a plurality of coarse direction measuring information as a series of direction measurement results for the series of target transmitting stations. Statistical processing to obtain high-accuracy azimuth information.

As described above, it is possible to separate signal radio waves other than the target transmitting station coming from different directions and extract the target wave. As a result, a more accurate direction measurement result of the frequency hopping signal radio wave is obtained.

Embodiment 7 FIG. In the seventh embodiment, the target wave extraction performed in the second to sixth embodiments is further advanced to integrate the reception level transmission duration, occupied bandwidth, modulation scheme and azimuth information, and to extract the target transmission station using optimal extraction conditions. Figure 17
Configuration.

In FIG. 17, reference numeral 19 denotes an azimuth measurement analyzer having azimuth measurement information, a reception level monitor output, an occupied bandwidth measurement function, and a modulation method analysis function. Reference numeral 20 denotes the input of the transmission duration measured by the time measuring device 12, the transmission duration of the target transmitting station is estimated from a plurality of transmission duration measurement values, and the received signal wave is compared with the estimated value to obtain the target transmission station. For example, it is a time criterion unit that outputs a criterion based on the measurement frequency or the like in the estimated value. Reference numeral 21 denotes the input of the reception level measured by the level measuring device 8, estimates the reception level of the target transmission station from a plurality of level measurement values, and compares the estimated value with the estimated value to determine whether the received signal wave is from the target transmission station. Is a level criterion unit that outputs a criterion for. Reference numeral 22 denotes an occupied bandwidth measured by the azimuth measurement analyzer, estimates the occupied bandwidth of the target transmitting station from a plurality of measured occupied bandwidths, compares the estimated occupied bandwidth with the estimated value, and converts the received signal wave into the target transmitting station. Is an occupied bandwidth determination reference unit that outputs a determination criterion as to whether or not the occupied bandwidth is the same. 2
Numeral 3 receives the modulation system analysis result analyzed by the azimuth measurement analyzer, estimates the modulation system of the target transmitting station from the plurality of modulation system analysis results, and compares the estimation result with the received signal wave to determine the received signal wave. This is a modulation method determination reference device that outputs a determination reference as to whether or not the signal is a signal. 24 is an orientation measurement analyzer 1
9, the azimuth measurement result is input, the azimuth of the target transmitting station is estimated from the plurality of azimuth measurement results, and the estimated value is compared with the estimated value to output a criterion as to whether the received signal radio wave belongs to the target transmitting station. It is an azimuth determination standard. Reference numeral 25 receives the judgment reference outputs of the time judgment reference device 20, the level judgment reference device 21, the occupied bandwidth judgment reference device 22, the modulation method judgment reference device 23, and the azimuth judgment reference device 24, and weights them to make an integrated judgment. This is an integrated determinator that determines a reference and determines whether a received signal radio wave belongs to a target transmitting station. 1, 5, and 8 have the same functions as those in the first, second, and third embodiments.

Next, the operation will be described. The signal radio wave entering from the antenna 1 is amplified by the amplifier 2 and input to the distributor 3. The signal waves distributed by the distributor 3 are input to a plurality of direction measurement analyzers 19 tuned to the hopping frequency of the target transmitting station. The azimuth measurement analyzer 19 measures the azimuth of a frequency hopping signal radio wave having an extremely short transmission duration at each tuning frequency and outputs coarse azimuth information, and at the same time, determines and analyzes the reception level, occupied bandwidth, and modulation method. The output coarse accuracy direction information is temporarily stored in the accumulator 11.
And waits for the judgment of the integrated judgment unit 25. The reception level monitor output of the azimuth measurement analyzer 19 for the signal radio wave for which the azimuth measurement has been performed is input to the level measurement device 8, and the result is input to the level determination reference device 21. At the same time, the reception level monitor output of the azimuth measurement analyzer 19 is also input to the time measurement unit 12 to measure the transmission duration assuming that transmission is being performed when the reception level is equal to or higher than a given threshold. Is input to the time determination reference device 20. The occupied bandwidth, which is the output of the azimuth measurement analyzer, is sent to the occupied bandwidth judgment reference unit 22 and the modulation method analysis result is sent to the modulation method judgment reference unit
To enter. Also, the azimuth information is input to the azimuth determination reference unit 24. The time criterion unit 20 estimates the transmission duration of the target transmitting station from the input plurality of transmission duration measurement values, and compares the estimated duration with the estimated value to determine whether the received signal radio wave belongs to the target transmitting station. The level criterion unit 21 estimates the reception level of the target transmitting station from each of the plurality of received level measurement results that have been input, compares the received level with the estimated value, and transmits the received signal radio wave to the target transmission station. Outputs the criterion of whether the station belongs to the station. Occupied bandwidth judgment reference unit 22
Estimates the occupied bandwidth of the target transmitting station from the plurality of input occupied bandwidth measurement results, and outputs a criterion for determining whether the received signal radio wave belongs to the target transmitting station by comparing with the estimated value. I do. The modulation scheme determination reference unit 23 estimates the modulation scheme of the target transmitting station from the input plurality of modulation scheme analysis results, and compares the estimation result with the estimation result to determine whether the received signal radio wave belongs to the target transmitting station. Output judgment criteria. The azimuth determination reference unit 24 estimates the azimuth of the target transmitting station from each of the plurality of azimuth measurement results that have been input, compares the azimuth with the estimated value, and determines whether the received signal radio wave belongs to the target transmitting station. Output the reference. The integrated decision unit 25 receives the outputs of the time decision reference unit 20, the level decision reference unit 21, the occupied bandwidth decision reference unit 22, the modulation scheme decision reference unit 23, and the azimuth decision reference unit 24, and compares these decision reference outputs. For example, for example, weighting is performed according to the magnitude of the measurement frequency in the estimated value, and a determination criterion is determined in an integrated manner, and it is determined whether the received signal radio wave belongs to the target transmitting station. The storage controller 10 receives the output of the integration determiner 25 and controls whether the azimuth information stored in the storage 11 is output to the synthesizer 5 or rejected. The coarse direction information of only the signal radio wave of the target transmitting station extracted in this way is synthesized by the synthesizer 5 in the order of generation, and the processor 6 converts a plurality of coarse direction measuring information as a direction measurement result for a series of target transmitting stations. Statistical processing to obtain high-accuracy azimuth information.

As described above, the transmission duration, the occupied bandwidth, the modulation method, and the azimuth can be determined in an integrated manner, and the target wave can be reliably extracted. As a result, a more accurate and reliable azimuth measurement result of the frequency hopping signal radio wave is obtained.

In the first to seventh embodiments, the direction measuring device 4, the direction measuring device 7 with the level monitor output, the direction measuring device 14 with the occupied bandwidth measuring function, the direction measuring device 16 with the modulation method analyzing function, the direction measuring analyzer In any one of 19, it is necessary to prepare a plurality of frequency hopping signal radio waves which have a relatively narrow reception band and spread over a wide band, but one receiver having a wide reception band and sufficient resolution for each output is required. A stand may be prepared. Further, in the seventh embodiment, an example in which all of the first to sixth embodiments are combined has been described.
Based on the first embodiment, some of the second to sixth embodiments may be combined to form an azimuth measuring device with good extraction performance at low cost. Further, it can also be used for azimuth measurement of signal radio waves of the same frequency from a plurality of radio wave sources other than frequency hopping signal radio waves, and the effect of simultaneously measuring without switching frequencies is obtained.

[0051]

Since the present invention is configured as described above, it has the following effects.

The azimuth measuring apparatus according to the present invention comprises an antenna for capturing frequency hopping radio waves arriving from a radio wave source, amplifying means for amplifying a signal received by the antenna, and an output signal from the amplifying means. Distribution means for distributing, a plurality of azimuth measurement means for outputting coarse azimuth measurement information on the radio wave source based on an output signal from the distribution means, and synthesizing coarse azimuth measurement information from these azimuth measurement means Combining means for outputting coarse combined direction information, and coarse combined direction information from the combining means .
Statistical processing as direction measurement results for elephant transmitting stations
The processing means for outputting a high-precision azimuth information, since with a very short transmission duration, coarse accuracy azimuth measurement information different frequency hopping signal radio waves, and azimuth measurements of the long signal radio wave transmission duration Similar high-accuracy azimuth measurement information can be obtained. Further, signal radio waves from a plurality of radio wave sources having the same frequency can be separated.

In addition to the azimuth measuring means, there are provided azimuth measuring means with a plurality of level monitor outputs for outputting coarse azimuth measuring information and signal levels relating to the radio wave generating source based on the output signal from the distribution means. Accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with level monitor output; level measuring means for measuring the reception level output from the azimuth measuring means with level monitor output; and receiving level from this level measuring means A level determining means for determining whether a received signal is from a radio wave generating source based on the measurement information; and a control signal for controlling input / output of the storage means based on the received level determining information from the level determining means. A storage control unit, and based on the control signal from the storage control unit, collects the coarse-accuracy azimuth measurement information from the storage unit. Since the output to the means, even if there is a signal wave having the same frequency as the frequency that are using the radio wave source, more accurate frequency hopping signal wave azimuth measurement results.

In addition to the azimuth measuring means, there are provided azimuth measuring means with a plurality of level monitor outputs for outputting coarse-accuracy azimuth measurement information and a signal level relating to the radio wave generating source based on an output signal from the distribution means. Accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with a level monitor output, and a plurality of time measurements for measuring the transmission duration of an incoming radio wave based on the reception level output from the azimuth measuring means with a level monitor output Means, time determination means for determining whether the received signal is from a radio wave source based on transmission time measurement information from the time measurement means,
Storage control means for outputting a control signal for controlling the input / output of the storage means based on the time determination information from the time determination means. Since the measurement information is output to the synthesizing means, even if there is a signal radio wave having the same frequency as the frequency used by the radio wave generation source, it is possible to obtain a more accurate direction measurement result of the frequency hopping signal radio wave.

Also, a plurality of azimuth measuring means with occupied bandwidth output for outputting coarse-accuracy azimuth measurement information and occupied bandwidth measurement information on a radio wave source based on an output signal from the distribution means is provided in place of the azimuth measuring means. Along with the accumulating means for accumulating coarse-accuracy azimuth measurement information from the azimuth measuring means with occupied bandwidth output, and receiving radio signals based on the occupied bandwidth measurement information output from the azimuth measuring means with occupied bandwidth output. Occupied bandwidth determining means for determining whether the signal belongs to a source, and storage control means for outputting a control signal for controlling input / output of the storage means based on occupied bandwidth determination information from the occupied bandwidth determining means. And the coarse-accuracy azimuth measurement information is output from the storage means to the synthesis means based on the control signal from the storage control means, so that the frequency used by the radio wave source is Even in the presence of signal wave of the same frequency, it is possible to obtain the azimuth measurement result with a higher accuracy of the frequency hopping signal waves.

Also, a plurality of azimuth measuring means with modulation system analysis output for outputting coarse accuracy azimuth measurement information on a radio wave generating source and outputting modulation system analysis information based on an output signal from the distribution unit instead of the azimuth measurement unit. A storage means for accumulating coarse-accuracy azimuth information from the azimuth measuring means with the modulation scheme analysis output, and a reception signal generated based on the modulation scheme analysis information output from the azimuth measurement means with the modulation scheme analysis output. A modulation method determining means for determining whether the signal belongs to a source, and a storage control means for outputting a control signal for controlling input / output of the storage means based on the modulation method analysis information from the modulation method determining means. Since the storage means outputs the coarse-accuracy azimuth measurement information to the synthesis means based on the control signal from the storage control means, the frequency used by the radio wave source is Even if there is a signal radio wave having the same frequency as the above, it is possible to obtain a more accurate direction measurement result of the frequency hopping signal radio wave.

Further, storage means for storing coarse direction measurement information from the direction measurement means, and direction determination for judging whether the received signal is from a radio wave source based on the coarse direction measurement information from the direction measurement means. Means, and storage control means for outputting a control signal for controlling input / output of the storage means based on the direction determination information from the direction determination means, further comprising:
Since the coarse direction azimuth measurement information is output from the storage unit to the synthesizing unit based on the control signal from the storage control unit, the signal radio wave other than the target transmitting station coming from the different direction is the same as the frequency used by the radio wave generation source. Even if there is a signal wave of the frequency,
Separation enables target wave extraction. As a result, it is possible to obtain a more accurate direction measurement result of the frequency hopping signal radio wave.

Also, a plurality of azimuth measurement units for outputting coarse-accuracy azimuth measurement information, signal level, occupied bandwidth measurement information, and modulation scheme analysis information relating to a radio wave generating source based on an output signal from the distribution unit instead of the azimuth measurement unit. Along with analysis means, accumulating means for accumulating coarse-accuracy azimuth measurement information from these azimuth measurement analysis means, level measurement means for measuring the reception level output from the azimuth measurement analysis means, and azimuth measurement analysis means Time measurement means for measuring the transmission duration of the arriving radio wave based on the output reception level, and judgment criterion information as to whether the received signal is of a radio wave source based on the reception level measurement information from the level measurement means Based on the transmission time measurement information from the time measurement means, and determines whether the received signal is from the radio wave source. Time criterion means for outputting all criterion information, and an occupied band for outputting criterion information about whether or not the received signal is from the radio wave source based on the occupied bandwidth measurement information output from the azimuth measurement analysis means Width determination reference means, modulation method analysis determination reference means for outputting determination reference information as to whether a received signal is from a radio wave source based on modulation method analysis information output from the direction measurement analysis means, and direction measurement analysis means. Azimuth determination reference means for outputting determination criterion information as to whether the received signal is from the radio wave source based on the coarse azimuth measurement information from the means,
Integrated judgment for judging whether a received signal is from a radio wave generating source based on judgment reference information from level judgment reference means, time judgment reference means, occupied bandwidth judgment reference means, modulation scheme judgment reference means and azimuth judgment reference means. Means, and a storage control means for outputting a control signal for controlling the input / output of the storage means based on the determination information from the integrated determination means, wherein the storage means is provided based on the control signal from the storage control means. By outputting the coarse-accuracy azimuth measurement information to the synthesizing means, the reception level, the transmission duration, the occupied bandwidth, the modulation method, and the azimuth can be integrally evaluated, and the target wave can be reliably extracted. As a result, it is possible to obtain a more accurate and highly reliable direction measurement result of the frequency hopping signal radio wave.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a diagram illustrating an output of a direction measurement device.

FIG. 3 is a diagram illustrating an output of a synthesizer.

FIG. 4 is a conceptual diagram illustrating a state in which a result of a coarse-accuracy azimuth measurement is synthesized and subjected to statistical processing to obtain a high-accuracy azimuth measurement result.

FIG. 5 is a configuration diagram showing another embodiment of the present invention.

FIG. 6 is a diagram illustrating extraction of a target transmitting station based on a reception level.

FIG. 7 is a diagram for estimating a target transmission station reception level from a reception level measurement value.

FIG. 8 is a configuration diagram showing another embodiment of the present invention.

FIG. 9 is a diagram for measuring a transmission duration from a reception level measurement value.

FIG. 10 is a diagram illustrating extraction of a target transmitting station based on a transmission duration.

FIG. 11 is a diagram estimating a transmission duration of a target transmitting station from a transmission duration measurement value.

FIG. 12 is a configuration diagram showing another embodiment of the present invention.

FIG. 13 is a diagram illustrating extraction of a target transmitting station based on an occupied bandwidth.

FIG. 14 is a diagram for estimating a target transmitting station occupied bandwidth from an occupied bandwidth measurement value.

FIG. 15 is a configuration diagram showing another embodiment of the present invention.

FIG. 16 is a configuration diagram showing another embodiment of the present invention.

FIG. 17 is a configuration diagram showing another embodiment of the present invention.

FIG. 18 is a configuration diagram of a reception monitoring apparatus according to a conventional example.

FIG. 19 is a configuration diagram of an azimuth measuring device according to a conventional invention example.

[Explanation of symbols]

1 antenna, 2 amplifier, 3 distributor, 4 direction measuring device,
5 synthesizer, 6 processor, 7 direction measuring device with level monitor output, 8 level measuring device, 9 level judging device, 10
Accumulation controller, 11 Accumulator, 12 hour measuring device, 13
Time determinator, 14 azimuth measuring instrument with occupied bandwidth measurement function, 15 occupied bandwidth determinator, 16 azimuth measuring instrument with modulation scheme analysis function, 17 modulation scheme determinator, 18 azimuth determinator, 19 azimuth measurement analyzer, 20 Time reference,
21 level judgment standard, 22 occupied bandwidth judgment standard,
23 Reference system for modulation method, 24 Reference system for azimuth, 2
5 Integrated judgment unit, 26 sweep receiver, 27 signal extraction circuit, 28 display.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04B 1/713

Claims (7)

(57) [Claims] An antenna for capturing frequency hopping radio waves arriving from a radio wave source, amplifying means for amplifying a signal received by the antenna, distribution means for distributing an output signal from the amplifying means, A plurality of azimuth measuring means for outputting coarse-accuracy azimuth measurement information on the radio wave source based on an output signal from the distribution means; and coarse-accuracy azimuth information obtained by synthesizing the coarse-accuracy azimuth measurement information from these azimuth measurement means. , And processing means for outputting high-accuracy azimuth information by statistically processing the coarse-accuracy combined azimuth information from the synthesizing means as an azimuth measurement result for the target transmitting station. Direction measurement device. 2. The distribution means in place of the azimuth measuring means.
Based on the output signal from the
Multiple levels to output azimuth measurement information and signal level
It has azimuth measuring means with monitor output and
Coarse accuracy from azimuth measuring means with level monitor output
Storage means for storing azimuth measurement information, and the level monitor
Measures the reception level output from the azimuth measuring means with output
Level measuring means for receiving and receiving from the level measuring means
The received signal is generated based on the level measurement information.
Level determining means for determining whether the
Based on the reception level judgment information from the bell judgment means,
Storage for outputting a control signal for controlling the input / output of the storage means
Control means, and further comprising:
The coarse direction azimuth measurement is performed from the storage means based on a control signal.
Outputting constant information to the synthesizing means.
Item 6. The azimuth measuring device according to Item 1. 3. The distribution means in place of the azimuth measurement means.
Based on the output signal from the
Multiple levels to output azimuth measurement information and signal level
It has azimuth measuring means with monitor output and
Coarse accuracy from azimuth measuring means with level monitor output
Storage means for storing azimuth measurement information, and the level monitor
To the reception level output from the azimuth measuring means with output
Measuring the transmission duration of the incoming radio wave based on a plurality of
Time measurement means and transmission time measurement from the time measurement means
Whether the received signal is from the radio wave source based on the information
Time determining means for determining whether or not this time determining means
Based on the time determination information,
Further Bei and storage control means for outputting a control signal for controlling
Based on the control signal from the accumulation control means.
The coarse-accuracy azimuth measurement information from the storage means;
2. The azimuth measuring device according to claim 1, wherein
Place. 4. The distribution means in place of the azimuth measuring means.
Based on the output signal from the
Multiple outputs of azimuth measurement information and occupied bandwidth measurement information
With azimuth measuring means with occupied bandwidth output of
The coarse data from the azimuth measuring means with these occupied bandwidth outputs.
Storage means for storing precision azimuth measurement information, and the occupied band
Measurement of occupied bandwidth output from azimuth measuring means with width output
Whether the received signal is from the radio wave source based on the information
Occupied bandwidth determining means for determining whether
Based on the occupied bandwidth determination information from the width determination means,
A storage system that outputs a control signal that controls the input and output of the storage means
Control means, wherein the control from the accumulation control means is provided.
Measuring the coarse orientation from the accumulating means based on the control signal
Outputting information to the synthesizing means.
The azimuth measuring device according to 1. 5. The distributing means in place of the azimuth measuring means.
Based on the output signal from the
Outputs azimuth measurement information and modulation scheme analysis information
With a plurality of azimuth measuring means with modulation scheme analysis output
Also, from these azimuth measuring means with modulation system analysis output
Storage means for storing the coarse-accuracy azimuth information;
Modulation method output from azimuth measuring means with method analysis output
Based on the analysis information, the received signal may
Modulation method determining means for determining whether or not
Based on the analysis information of the modulation method from the expression determination means,
A storage system that outputs a control signal that controls the input and output of the storage means
Control means, wherein the control from the accumulation control means is provided.
Measuring the coarse orientation from the accumulating means based on the control signal
Outputting information to the synthesizing means.
The azimuth measuring device according to 1. 6. The coarse precision azimuth from the azimuth measuring means.
A storage unit for storing measurement information; and
Based on the coarse-accuracy azimuth measurement information,
Azimuth determining means for determining whether the signal is of a radio wave generating source
And based on the azimuth determination information from the azimuth determination means,
A storage for outputting a control signal for controlling the input / output of the storage means;
Product control means, and further comprising:
The coarse direction from the storage means based on the control signal.
Outputting the measurement information to the synthesizing means.
The azimuth measuring device according to claim 1. 7. The distribution means in place of the azimuth measuring means.
Based on the output signal from the
Azimuth measurement information, signal level, occupied bandwidth measurement information and
Multiple azimuth measurement analysis means to output modulation method analysis information
Along with the azimuth measurement and analysis means
Storage means for storing coarse direction measurement information;
For measuring the reception level output from the constant analysis means.
Bell measurement means, output from the azimuth measurement analysis means
The transmission duration of the incoming radio wave based on the reception level
Time measuring means for measuring the
The reception signal is based on the reception level measurement information.
Outputs criteria information about whether the
Level judging means, and the time measuring means
Based on the transmission time measurement information, the received signal is
Outputs criterion information on whether the source is a wave source
From the time determination reference means and the direction measurement analysis means.
The received signal based on the input occupied bandwidth measurement information.
Criteria for determining whether a signal belongs to the radio wave source
Occupied bandwidth determination reference means for outputting information;
Based on the modulation scheme analysis information output from the constant analysis means.
And whether the received signal is from the radio wave source.
Modulation method that outputs the judgment reference information
Step and the coarse precision azimuth measurement from the azimuth measurement analysis means
Whether the received signal is from the radio wave source based on the information
Orientation criterion to output criterion information about whether
Means, the level determination reference means, time determination reference means,
The occupied bandwidth determination reference means, the modulation scheme determination reference means
Based on the step and the criterion information from the direction criterion means.
To determine whether the received signal is from the radio wave source.
Integrated determination means for rejecting, and determination information from the integrated determination means.
Control signal for controlling the input / output of the storage means based on the
Storage control means for outputting a signal
The storage means based on the control signal from the control means;
Output the coarse-accuracy azimuth measurement information to the synthesizing means.
The azimuth measuring device according to claim 1, wherein: