KR101473760B1 - Apparatus for processing radar signal - Google Patents

Apparatus for processing radar signal Download PDF

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Publication number
KR101473760B1
KR101473760B1 KR1020140091637A KR20140091637A KR101473760B1 KR 101473760 B1 KR101473760 B1 KR 101473760B1 KR 1020140091637 A KR1020140091637 A KR 1020140091637A KR 20140091637 A KR20140091637 A KR 20140091637A KR 101473760 B1 KR101473760 B1 KR 101473760B1
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South Korea
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signal
radar signal
pdw
memory
pdws
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KR1020140091637A
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Korean (ko)
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김동규
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엘아이지넥스원 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/505—Systems of measurement based on relative movement of target using Doppler effect for determining closest range to a target or corresponding time, e.g. miss-distance indicator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/53—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
    • G01S13/532—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar using a bank of range gates or a memory matrix
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/2813—Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays

Abstract

An apparatus for processing a radar signal according to the present invention is disclosed. The apparatus for processing a radar signal according to the present invention comprises a PDW measurement unit (10) for collecting PDWs (Pulse Description Words) from a signal received through a frequency of the tuned band for a preset time, ; A preprocessing filter for filtering the collected PDW based on a predetermined filtering parameter value and storing the filtered result in a first memory and a second memory; A signal judging unit for checking the number of first PDWs stored in the first memory and judging the presence or absence of a pulse Doppler radar signal as a result of checking; And when it is determined that the pulse Doppler radar signal is present as a result of the determination, the first PDW stored in the first memory is read and the pulse doppler radar signal is analyzed and identified based on the read first PDW And a signal processing unit.

Figure R1020140091637

Description

[0001] APPARATUS FOR PROCESSING RADAR SIGNAL [0002]

Field of the Invention [0002] The present invention relates to a radar signal processing technique of an electronic warfare receiver, and more particularly to an apparatus for processing a radar signal.

In general, an electronic warfare receiver must identify, analyze, and process signals at high speed even in a highly dense signal environment in which multiple signals and complex signals are input.

When a signal having a short pulse repetition period such as a pulse Doppler signal is generated, the electronic attenuator should reduce the load of the signal processing so that the analysis identification can be performed quickly and the analysis identification is optimized for a signal having a relatively long pulse repetition period.

The electronic warfare receiver measures the frequency, pulse width, pulse arrival time, and pulse signal strength of the received radar signal, stores it in the form of pulse description data (PDW), and reads it in a SBC (Single Board Computer) Analysis identification was performed.

In the conventional electronic warfare receiver, if there is a signal having a short pulse repetition period such as a pulse Doppler radar signal, even if the SBC reads the PDW for the measured signal from the memory, it may take a long time to analyze and identify, It can also affect the high-speed processing of other signals, including Doppler radar signals.

Accordingly, there is a need for various methods for reducing the time required for analyzing and identifying pulse Doppler radar signals and general radar signals in a conventional electronic warfare receiver.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for detecting PDWs in a high density signal environment, And an apparatus for processing a radar signal for performing signal analysis and identification by selectively reading a pulse Doppler radar signal and a general radar signal according to a detection result.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an apparatus for processing a radar signal according to an embodiment of the present invention includes a tuner for tuning a frequency of a band to be collected, A PDW measuring unit for collecting PDWs (Pulse Description Words); A preprocessing filter for filtering the collected PDW based on a predetermined filtering parameter value and storing the filtered result in a first memory and a second memory; A signal judging unit for checking the number of first PDWs stored in the first memory and judging the presence or absence of a pulse Doppler radar signal as a result of checking; And when it is determined that the pulse Doppler radar signal is present as a result of the determination, the first PDW stored in the first memory is read and the pulse doppler radar signal is analyzed and identified based on the read first PDW And a signal processing unit.

Preferably, the pre-processing filter divides the collected PDW into a first PDW for determining whether the pulse Doppler radar signal is present and a second PDW for determining whether the general radar signal is present or not. And stores the first PDW in the first memory and the second PDW in the second memory as a result of the division.

Preferably, the signal determination unit compares the number of the first PDWs stored in the first memory with a predetermined first reference value, and when the number of the first PDWs is greater than the first reference value, the pulse Doppler radar signal And transmits an interrupt signal indicating that the pulse Doppler radar signal is present to the signal processing unit.

Preferably, if it is determined that the pulse Doppler radar signal does not exist as a result of the comparison, the signal processing unit checks the number of second PDWs stored in the second memory and determines whether there is a general radar signal And if the general radar signal exists as a result of the determination, the second PDW stored in the second memory is read, and the general radar signal is analyzed and identified based on the read second PDW .

Preferably, the signal processor compares the number of second PDWs stored in the second memory with a preset second reference value, and if the number of the second PDWs is equal to or greater than a second reference value, .

Preferably, the filtering parameter value includes at least one of a frequency, a pulse width, and a signal intensity value for distinguishing the pulse Doppler radar signal from the general radar signal.

According to another aspect of the present invention, an apparatus for processing a radar signal collects pulse description words (PDW) for a preset time from a signal received through a frequency of the tuned band, A PDW measuring unit; A preprocessing filter for filtering the collected PDW based on a predetermined filtering parameter value and storing the filtered result in a first memory and a second memory; A signal judging unit for checking the number of first PDWs stored in the first memory and judging the presence or absence of a pulse Doppler radar signal as a result of checking; And if it is determined that the pulse Doppler radar signal is present as a result of the determination, the first PDW stored in the first memory is read according to a predetermined interval, and the analysis of the pulse Doppler radar signal based on the read first PDW And a signal processing unit for performing identification.

Preferably, the signal determination unit compares the number of the first PDWs stored in the first memory with a predetermined first reference value, and when the number of the first PDWs is greater than the first reference value, the pulse Doppler radar signal And transmits an interrupt signal indicating that the pulse Doppler radar signal is present to the signal processing unit.

Preferably, if it is determined that the pulse Doppler radar signal does not exist as a result of the comparison, the signal processing unit checks the number of second PDWs stored in the second memory and determines whether there is a general radar signal And if the general radar signal exists as a result of the determination, the second PDW stored in the second memory is read, and the general radar signal is analyzed and identified based on the read second PDW .

Preferably, the signal processor compares the number of second PDWs stored in the second memory with a preset second reference value, and if the number of the second PDWs is equal to or greater than a second reference value, .

According to the present invention, a PDW collected in a highly dense signal environment is divided and stored in a plurality of memories according to characteristics, a pulse Doppler radar signal is detected based on a stored PDW, and a pulse Doppler radar signal, By selectively reading the signal and performing signal analysis and identification, it is possible to improve the signal analysis and identification ability of the pulse Doppler radar signal and the general radar signal.

Further, according to the present invention, each of the memories for analyzing and identifying the pulse Doppler radar signal and the general radar signal can reduce the time taken to analyze and identify the signal.

Furthermore, according to the present invention, the signal analysis can be effectively performed by reading the PDW stored in each memory at intervals of a predetermined interval and performing signal analysis and identification.

1 is a block diagram of an apparatus for processing a radar signal according to an embodiment of the present invention.
2 is a diagram showing a process of separating a pulse Doppler radar signal and a general radar signal.
3 is a view illustrating a PDW that is separately stored in a first memory and a second memory.

Hereinafter, an apparatus for processing a radar signal according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given thereto even though they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that it has the same function in different embodiments, and the function of each component is different from that of the corresponding embodiment Based on the description of each component in FIG.

In particular, according to the present invention, PDWs collected in a highly dense signal environment are classified and stored in a plurality of memories according to their characteristics, a pulse Doppler radar signal is detected based on a stored PDW, and a pulse Doppler radar signal, We propose a new method to perform signal analysis and identification by selectively reading signals.

1 is a block diagram of an apparatus for processing a radar signal according to an embodiment of the present invention.

1, an apparatus for processing a radar signal according to the present invention includes an RF section 110, a PDW (Pulse Description Words) measuring unit 120, a preprocessing filter 130, a first memory 140, A second memory 142, a signal determination unit 150, a signal processing unit 160, and the like.

The RF section 110 may tune the frequency of use to the frequency of the band desired to be collected according to a predetermined operational scenario.

When the PDW measuring unit 120 is tuned to the frequency of the band to be collected, it can measure and collect the PDW for a predetermined time from the signal received through the tuned frequency.

For example, when such PDW acquisition time of MT total doedoe is set to a time sufficient for the analysis and identification of common radar signal, for example, of the general radar signal pulse repetition period 12 times the of, (TOA n -TOA n -1) * 12 = (1000 mu s * 12) = 12000 mu s. Here, TOA n -TOA n -1 represents 1000 s, which is the repetition period of the pulse of the general radar signal. Therefore, the acquisition time of the PDW can be set to 12000 mu s.

The pre-processing filter 130 may filter the measured PDW based on a predetermined filtering parameter value, and store the result in the first memory 140 and the second memory 142 as a result of the filtering. Here, the filtering parameter value may include at least one of a frequency, a pulse width, a signal intensity value, and the like for distinguishing the pulse Doppler radar signal from the normal radar signal.

That is, the preprocessing filter 130 may include a first PDW for determining whether the measured PDW includes a pulse doppler radar signal having a relatively short pulse repetition period, and a normal PDP having a relatively long pulse repetition period The first PDW is stored in the first memory 140 and the second PDW is stored in the second memory 142. The first PDW is stored in the first memory 140 and the second PDW is stored in the second memory 142. [

2 is a diagram showing a process of separating a pulse Doppler radar signal and a general radar signal.

As shown in FIG. 2, the signal of a certain frequency band collected through the RF section may be a signal in which the pulse Doppler radar signal A and the general radar signal B are mixed.

The pulse Doppler radar signal A may be a signal having a pulse repetition period of several tens of microseconds and the general radar signal B may be a signal having a pulse repetition period of several hundreds of microseconds to several tens of ms.

Here, the characteristic of the general radar signal B is that the frequency (Fx) = 2.5 GHz, the pulse arrival time (TOAx), the pulse signal intensity (PAx) = -40 dBm having a long pulse repetition period, Means an integer from 0 to n. The pulse Doppler radar signal (A) has a frequency (Fy) = 2.6 GHz, a pulse repetition period (TOAy), a pulse signal intensity (PAy) = -40 dBm with a short pulse repetition period of 50 μs and y is an integer from 1 to z it means.

The signal 210 having the predetermined frequency band is filtered while passing through the preprocessing filter 130 and can be separated into the pulse Doppler radar signal A and the general radar signal B, respectively.

The first memory 140 stores the first PDW filtered by the preprocessing filter 130 and collected to determine the presence or absence of a pulsed Doppler radar signal for a predetermined acquisition time.

In this case, the first memory 420 stores a first PDW for determining whether a pulse Doppler radar signal exists in a signal of a corresponding frequency band. The first PDW stores a frequency , Pulse arrival time (TOA), pulse signal intensity (PA), and the like.

The second memory 430 stores a second PDW filtered by the preprocessing filter 410 and collected to determine the presence or absence of a normal radar signal for a predetermined acquisition time.

The second memory 430 stores a second PDW for determining whether or not a general radar signal exists in the signal of the corresponding frequency band. The second PDW 430 stores a frequency for a general radar signal, a pulse An arrival time (TOA), a pulse signal strength (PA), and the like.

Here, the general radar signal means a radar signal other than the pulse Doppler radar signal. Generally, the pulse Doppler radar signal and the general radar signal can be distinguished according to the pulse repetition period time, and such a general radar signal will be known to those skilled in the art, and a detailed description thereof will be omitted.

3 is a view illustrating a PDW that is separately stored in a first memory and a second memory.

Assuming that the pulse Doppler radar signal and the general radar signal are normally input to the electronic warfare receiver and that the PDW measurement and the real-time preprocessing filter perform measurement and filtering without missing, as shown in FIG. 3, The frequency of the radar signal, the pulse arrival time (TOA), the pulse signal intensity (PA), and the like are stored in the PDW.

For example, it can be confirmed that the first PDW for determining whether a pulse Doppler radar signal exists is collected (# 1 ~ # 240) for a period of 12000 μs and stored in the first memory, It is confirmed that 12 (# 1 to # 12) of the second PDW are collected and stored in the second memory for 12000 μs.

The signal determination unit 150 may determine the presence or absence of the pulse Doppler radar signal as a result of checking the number of the first PDWs stored in the first memory 140. [ That is, the signal determining unit 150 determines that the pulse Doppler radar signal exists if the number of the first PDWs stored in the first memory 140 is equal to or greater than a predetermined first reference value.

For example, the number of first PDWs for determining whether such a pulse Doppler radar signal exists is calculated as: (MT total ) / (TOA n -TOA n -1 ) * k) = ((12000 μs) / (50 μs) , Where k is a constant that can be set by the operator and can be set to a value between 0.1 and 1.

If k = 0.5, it means that if more than 50% of the corresponding pulse Doppler radar signals are collected during the acquisition time, they will be used as a criterion for judging the existence of the pulse Doppler radar signal. Here, ((12000 mu s) / (50 mu s)) * 0.5 = 120, and the number of the first PDW is 120. [

If the number 120 of the first PDWs is set as the first reference value, the signal determination unit 150 compares the number of the first PDWs stored in the first memory with a predetermined first reference value, It is determined that the pulse Doppler radar signal exists and the interrupt signal indicating that the pulse Doppler radar signal is present is generated and the generated interrupt signal is transmitted to the signal processor 160 .

When it is determined that the pulse Doppler radar signal is present based on the received interrupt signal, the signal processor 160 reads the first PDW stored in the first memory 140 and performs signal analysis and identification based on the read first PDW Can be performed.

When a detailed analysis of the pulse Doppler radar signal of the corresponding band is required, the signal processing unit 160 sets an interval T for reading the first PDW in consideration of the density of the pulse Doppler radar signal, To perform signal analysis and identification.

For example, if the interval T is set to 5, the SBC 160 reads only the first PDW stored in the addresses # 1, # 6, # 11, ... from the first memory and performs signal analysis and identification based on the first PDW .

By reading only a part of the first PDWs stored in the first memory according to the interval T and performing signal analysis and identification, the load can be reduced to about one fifth so that signal analysis and identification can be performed at high speed.

If it is determined that the pulse Doppler radar signal is not present, the signal processor 160 may read the second PDW stored in the second memory 142 and analyze and identify the read second PDW.

At this time, the signal processor 160 compares the number of read second PDWs with a predetermined second reference value, and when the number of second PDWs is greater than or equal to a predetermined second reference value as a result of the comparison, the signal processor 160 determines that a normal radar signal exists And performs the read second PDW-based signal analysis and identification.

The signal processing unit 160 may set a filtering parameter value for the pre-processing filter, a collection time of the first PDW, a collection time of the second PDW, a first reference value, a second reference value, and the like in advance.

It is to be understood that the present invention is not limited to these embodiments, and all of the elements constituting the embodiments of the present invention described above may be combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer-readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer, thereby implementing embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: RF section
120: PDW measuring unit
130: Pretreatment filter
140: first memory
142: second memory
150:
160: Signal processor

Claims (10)

A PDW measurement unit for collecting PDWs (Pulse Description Words) from a signal received through a frequency of the tuned band for a predetermined time, when tuned to a frequency of a band to be collected;
A preprocessing filter for filtering the collected PDW based on a predetermined filtering parameter value and storing the filtered result in a first memory and a second memory;
A signal judging unit for checking the number of first PDWs stored in the first memory and judging the presence or absence of a pulse Doppler radar signal as a result of checking; And
A first PDW stored in the first memory is read and a signal for performing analysis and identification of the pulse Doppler radar signal on the basis of the read first PDW is determined as a result of the determination, A processor;
Wherein the radar signal comprises a plurality of radar signals. The method according to claim 1,
The pre-
The PDW is divided into a first PDW for determining whether the pulse Doppler radar signal exists or not and a second PDW for determining whether a general radar signal exists or not
And stores the first PDW in the first memory and the second PDW in the second memory as a result of the discrimination. The method according to claim 1,
The signal determination unit may determine,
Comparing the number of first PDWs stored in the first memory with a preset first reference value, determining that the pulse Doppler radar signal exists if the number of the first PDWs is equal to or greater than the first reference value,
And an interrupt signal indicating that the pulse Doppler radar signal is present is transmitted to the signal processing unit. The method of claim 3,
The signal processing unit,
If it is determined that the pulse Doppler radar signal does not exist as a result of the comparison, it is determined whether there is a general radar signal as a result of checking the number of second PDWs stored in the second memory,
And if the general radar signal is present as a result of the determination, reads the second PDW stored in the second memory and performs analysis and identification of the general radar signal based on the read second PDW. Apparatus for processing signals. 5. The method of claim 4,
The signal processing unit,
Comparing the number of the second PDWs stored in the second memory with a preset second reference value and comparing the number of the second PDWs with a predetermined second reference value to determine that the general radar signal exists if the number of the second PDWs is equal to or greater than a second reference value Apparatus for processing radar signals. The method according to claim 1,
Wherein the filtering parameter value comprises:
And a signal intensity value for distinguishing the pulse Doppler radar signal from the general radar signal. A PDW measurement unit for collecting PDWs (Pulse Description Words) from a signal received through a frequency of the tuned band for a predetermined time, when tuned to a frequency of a band to be collected;
A preprocessing filter for filtering the collected PDW based on a predetermined filtering parameter value and storing the filtered result in a first memory and a second memory;
A signal judging unit for checking the number of first PDWs stored in the first memory and judging the presence or absence of a pulse Doppler radar signal as a result of checking; And
And when it is determined that the pulse Doppler radar signal exists, the first PDW stored in the first memory is read according to a predetermined interval, and the pulse Doppler radar signal is analyzed based on the read first PDW. A signal processing unit for performing identification;
Wherein the radar signal comprises a plurality of radar signals. 8. The method of claim 7,
The signal determination unit may determine,
Comparing the number of first PDWs stored in the first memory with a preset first reference value, determining that the pulse Doppler radar signal exists if the number of the first PDWs is equal to or greater than the first reference value,
And an interrupt signal indicating that the pulse Doppler radar signal is present is transmitted to the signal processing unit. 9. The method of claim 8,
The signal processing unit,
If it is determined that the pulse Doppler radar signal does not exist as a result of the comparison, it is determined whether there is a general radar signal as a result of checking the number of second PDWs stored in the second memory,
And if the general radar signal is present as a result of the determination, reads the second PDW stored in the second memory and performs analysis and identification of the general radar signal based on the read second PDW. Apparatus for processing signals. 10. The method of claim 9,
The signal processing unit,
Comparing the number of the second PDWs stored in the second memory with a preset second reference value and comparing the number of the second PDWs with a predetermined second reference value to determine that the general radar signal exists if the number of the second PDWs is equal to or greater than a second reference value Apparatus for processing radar signals.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190001255A (en) * 2017-06-27 2019-01-04 주식회사 만도 Apparatus and method for real-tiem processing of radar data
KR20230020785A (en) * 2021-08-04 2023-02-13 국방과학연구소 Pdw clustering method using bearing, elevation and frequency information, signal analysis method using the same and system for analyzing radar signal
KR20230062157A (en) 2021-10-29 2023-05-09 엘아이지넥스원 주식회사 Method and apparatus for converting pulse description word for electronic warfare

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JP2000056014A (en) 1998-08-04 2000-02-25 Meisei Electric Co Ltd Missile measuring/evaluating device
JP2009250670A (en) 2008-04-02 2009-10-29 Mitsubishi Electric Corp Pulse doppler radar device
KR101326096B1 (en) 2012-05-18 2013-11-07 국방과학연구소 Pdw data detection and preprocessing method for recognizing intra-pulse modulation

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Publication number Priority date Publication date Assignee Title
JP2000056014A (en) 1998-08-04 2000-02-25 Meisei Electric Co Ltd Missile measuring/evaluating device
JP2009250670A (en) 2008-04-02 2009-10-29 Mitsubishi Electric Corp Pulse doppler radar device
KR101326096B1 (en) 2012-05-18 2013-11-07 국방과학연구소 Pdw data detection and preprocessing method for recognizing intra-pulse modulation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190001255A (en) * 2017-06-27 2019-01-04 주식회사 만도 Apparatus and method for real-tiem processing of radar data
KR102106350B1 (en) * 2017-06-27 2020-05-04 주식회사 만도 Apparatus and method for real-tiem processing of radar data
KR20230020785A (en) * 2021-08-04 2023-02-13 국방과학연구소 Pdw clustering method using bearing, elevation and frequency information, signal analysis method using the same and system for analyzing radar signal
KR102626116B1 (en) 2021-08-04 2024-01-16 국방과학연구소 Pdw clustering method using bearing, elevation and frequency information, signal analysis method using the same and system for analyzing radar signal
KR20230062157A (en) 2021-10-29 2023-05-09 엘아이지넥스원 주식회사 Method and apparatus for converting pulse description word for electronic warfare

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