KR101522207B1 - Apparatus for testing jamming performance of tracking radar and method therefor - Google Patents

Apparatus for testing jamming performance of tracking radar and method therefor Download PDF

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KR101522207B1
KR101522207B1 KR1020140004752A KR20140004752A KR101522207B1 KR 101522207 B1 KR101522207 B1 KR 101522207B1 KR 1020140004752 A KR1020140004752 A KR 1020140004752A KR 20140004752 A KR20140004752 A KR 20140004752A KR 101522207 B1 KR101522207 B1 KR 101522207B1
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South Korea
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target
signal
jamming
tracking
radar
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KR1020140004752A
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Korean (ko)
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류정호
조용상
이규송
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국방과학연구소
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics

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  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The present invention relates to an apparatus for testing jamming performance of a tracking radar, and a method therefor. The apparatus for testing jamming performance comprises: a receiving unit for receiving a signal from an external tracking radar; a target signal generating unit for generating a target signal for a test target corresponding to the signal received by the receiving unit and prescribed test target information; a jamming signal generating unit for generating a jamming signal for the tracking radar employing a prescribed jamming method using the target signal; a transmitting unit for amplifying the generated target signal and jamming signal and transmitting the amplified signals to the tracking radar; a tracking information collecting unit for collecting tracking information about the test target artificially created in the target signal generating unit from the tracking radar; and a jamming performance analysis unit for analyzing jamming performance of the jamming signal based on the tracking information. Accordingly, jamming performance can be economically analyzed by creating an environment where a test target is treated just like an actual target using a test target signal.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and method for jamming a tracking radar,

The present invention relates to an apparatus and method for testing jamming performance of a tracking radar, and more particularly, to an apparatus and method for testing jamming performance of a tracking radar capable of analyzing a jamming effect on a tracking radar without using an actual target.

Jamming refers to the act of disrupting or disturbing the communication system by detecting the propagation and frequency of an enemy. It refers to electronic or mechanical interference that interferes with the detection of targets through radar, radio communications, and radio navigation.

Jamming for dual tracking radar systems aims to impersonate a target by adding a radiated signal similar to the tracking radar signal, preventing the tracking radar from tracking the target. In order to maximize the achievement of the above object, it is necessary to apply a suitable jamming method to each radar jammer in the radar jammer performing jamming. For this purpose, experiments using various jamming signals, You will find a way.

Currently, the above experiment is carried out by a jammer mounted on an actual target, which emits a jamming signal to the tracking radar and tracks the moving target of the tracking radar. However, there is a problem in that it takes a lot of resources and cost to operate an actual target, and a lot of time is spent because it is necessary to repeatedly perform experiments on various jamming signals.

Furthermore, at the time when various jamming techniques are continuously being developed, it is extremely inefficient to find the optimum jamming method by operating the actual target as described above. Therefore, a jamming performance testing device that can improve economy is desperately required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and method for testing jamming performance of a tracking radar capable of testing jamming performance without actually operating a target.

The above object can be accomplished by a receiving unit for receiving a signal from an external tracking radar according to an aspect of the present invention; A target signal generator for generating a target signal for simulating a target in response to a signal received through the receiver and predetermined simulated target information; A jamming signal generator for generating a jamming signal for the tracking radar using a predetermined jamming method using the target signal; A transmitter for amplifying the generated target signal and the jamming signal and sending the amplified signal to the tracking radar; A tracking information collecting unit for collecting tracking information on a target simulated by the target signal generating unit from the tracking radar; And a jamming performance analyzer for analyzing the jamming performance of the jamming signal based on the tracking information.

The apparatus for testing jamming performance of the tracking radar described above may further comprise a jamming control unit that measures at least one of a distance between a target simulated by the tracking radar and the target signal generating unit, a target size, a target speed, a moving direction of a target, And a J / S ratio controller for adjusting the intensity ratio of the target signal and the jamming signal in consideration of one.

The target signal generator may generate the target signal using a digital high-frequency memory or a digital tuning oscillator. The jamming performance analyzer may be configured to generate the target signal by using the position of the target simulated by the target signal generator, It is possible to analyze the jamming performance of the jamming signal by comparing the position of the target tracked by the tracking radar.

The above-mentioned object can be achieved by a method for receiving a signal from a tracking radar according to another aspect of the present invention. Generating a target signal that simulates a target corresponding to a signal received from the tracking radar and predetermined simulated target information; Generating a jamming signal for the tracking radar using a predetermined jamming method using the target signal; The intensity of the target signal and the jamming signal in consideration of at least one of the distance between the tracking radar and the target according to the target signal, the size of the target, the speed of the target, the moving direction of the target, the radar cross- Adjusting a ratio; Amplifying the target signal whose intensity ratio is adjusted and the jamming signal and transmitting the amplified signal to the tracking radar; Obtaining tracking information on a target tracked from the tracking radar based on the target signal; And analyzing the jamming performance of the jamming signal by comparing the position of the target according to the target signal with the position of the target obtained through the tracking information. .

As described above, according to the present invention, it is possible to analyze the jamming performance of the tracking radar economically by creating the same environment as the actual target is operated through the simulated target signal.

1 is a block diagram of an apparatus for testing jamming performance of a tracking radar according to an embodiment of the present invention.
2 is a flow chart illustrating an example of a method for testing jamming performance using the jamming performance testing apparatus of FIG.

Hereinafter, an apparatus and method for testing jamming performance of a tracking radar according to the present invention will be described in detail with reference to the drawings.

1 is a block diagram of an apparatus 100 for testing jamming performance of a tracking radar according to an embodiment of the present invention.

1, a tracking radar jamming performance testing apparatus 100 according to an exemplary embodiment of the present invention includes a receiver 10, a target signal generator 20, a jamming signal generator 30, a J / S ratio controller 40, a transmitting unit 50, a tracking information collecting unit 60, a jamming performance analyzing unit 70, and a user input unit 80.

The receiving unit 10 receives a high frequency signal from an external tracking radar through an antenna (not shown). A signal transmitted by a radiator other than the tracking radar may be included in the signal received by the receiving unit 10 as noise. Accordingly, the receiving unit 10 may include a filter (not shown) for filtering only the subject tracking radar signal from the received signals.

The target signal generating unit 20 generates a target signal corresponding to the tracking radar signal received through the receiving unit 10 and predetermined simulated target information. The target signal is an artificially generated signal to simulate the target, and the simulated target information is the information to be used as a reference for generating the target signal. The target signal is the distance between the tracking radar and the target, the movement of the target, the moving direction of the target, , The speed of the target, and the Radar Cross Section (RCS) of the target.

 It is important to simulate the characteristics of the target to generate the same signal as that formed by reflecting the radar signal in the real target. Therefore, the target signal is generated by considering various characteristics of the target, which is a factor affecting the reflection of the radar signal in the real target. The target signal generator 20 may include a digital radio frequency memory (DRFM) or a digitally tuned oscillator (DTO) in order to generate a target signal corresponding to the characteristics of the above target . The DRFM digitizes and stores the RF signal and retransmits the stored signal as an RF signal. The DTO is a kind of frequency synthesizer that generates a desired frequency in a short time corresponding to a digital input value corresponding to given channel information. DRFM, and DTO are known technologies used for various electronic apparatuses, radar, military communication equipment, and civilian measurement equipment, so that a description thereof will be omitted for the sake of simplicity.

The jamming signal generator 30 generates a jamming signal for the tracking radar using a predetermined jamming method using the target signal generated by the target signal generator 20. The jamming signal generator 30 uses various known jamming techniques such as range gate pull-off (RGPO) jamming, velocity gate pull-off (VGPO) jamming, noise jamming, angle jamming, Thereby generating a jamming signal. On the other hand, the jamming signal can be generated using the DRFM and DTO described above.

The J / S ratio control unit 40 adjusts the jamming to signal ratio of the generated target signal and the jamming signal. To this end, the J / S ratio control unit 40 controls the output intensity of the actual jammer, the distance between the target simulated by the target signal generator 20 and the tracking radar, the target size, The ratio of the target signal to the jamming signal is adjusted by deriving an appropriate J / S ratio according to the speed of the target, the moving direction of the target, the cross section of the target, the jamming technique applied by the jamming signal generating unit 30, On the other hand, the appropriate J / S ratio according to each situation can be determined experimentally.

The transmitting unit 50 amplifies the target signal and the jamming signal generated by the target signal generating unit 20 and the jamming signal generating unit 30, and transmits the amplified target signal and the jamming signal to the tracking radar. The transmitter 50 includes an antenna (not shown) for transmitting a signal and a high-power amplifier (not shown) for amplifying the signal.

The tracking information collection unit 60 collects tracking information that is a result of tracking radar tracking of the target simulated by the target signal generator 20 through the wired / wireless network. The tracking information includes information on the distance between the target and the tracking radar, the orientation of the target, the altitude of the target, and the speed of movement of the target.

The jamming performance analysis unit 70 analyzes the jamming performance of the jamming signal based on the tracking information of the tracking radar. That is, the jamming performance analyzing unit 70 calculates the position of the target based on the tracking information collected by the tracking information collecting unit 60, and calculates the position of the target based on the target signal generated by the target signal generating unit 20 The error is analyzed to analyze the performance of the jamming signal. The jamming performance analyzing unit 70 analyzes jamming performance based on various jamming signals generated through the jamming signal generating unit 30 to find an optimal jamming signal for the tracking radar.

Meanwhile, the tracking radar jamming performance testing apparatus 100 according to an embodiment of the present invention may include a user input unit 80 and receive simulation target information and a jamming method from a user. The simulation target information is information on a target to be simulated through the target signal generator 20 as described above, and the jamming method refers to a specific jamming method for analyzing the performance. For example, the simulated target information may be the distance between the tracking radar and the target, the movement of the target, the moving direction of the target, the size of the target, the speed of the target, the radar cross section of the target, There are various jamming techniques such as speed jamming, noise jamming, angle jamming, and complex jamming.

The target signal generator 20 generates a target signal corresponding to the input simulated target information, and the jamming signal generator 30 generates a jamming signal according to the input jamming method. Users can experiment with varying inputs to determine which jamming is most effective in various environments.

Hereinafter, an example of a process of performing the jamming performance test using the jamming performance testing apparatus 100 of FIG. 1 will be described with reference to the flowchart of FIG.

When a high-frequency signal radiated from an external tracking radar is received through the receiver 10, a target signal for simulating the target is generated using the signal received from the tracking radar and the simulated target information set through the user (S10, S11 ). The target signal is implemented by varying the Doppler shift, received power change, and time delay considering various characteristics of the target to be simulated such as the distance to the tracking radar, the target motion, the moving speed, and the moving direction.

When a simulated target signal is generated, a jamming signal is generated according to the jamming method for analyzing the performance using the generated target signal (S13). The generated target signal and the jamming signal are appropriately adjusted in proportion to the characteristics of the simulated target, the output intensity of the actual jammer, the jamming method, etc., amplified by the amplifier, and transmitted to the tracking radar through the transmitter 50 (S15, S17).

The tracking radar receives the target signal and the jamming signal, and tracks the position of the target by calculating the distance, bearing, and speed of the target. As described above, the tracking radar receives the tracking information as a result of tracking the simulated target, and compares the position of the simulated target with the position of the target tracked by the tracking radar through the target signal generator 20, Are quantitatively analyzed (S19, S21). The user can repeatedly perform the test while changing the jamming method and the mock target information, thereby finding a jamming method with high interference effect.

On the other hand, each of the steps described above can be appropriately modified, added, or deleted depending on the situation. For example, before the jamming signal is radiated to the tracking radar, it must first be known whether the tracking radar is capable of tracking the target. If the tracking radar can not track the target, it can not quantitatively analyze the jamming interference effect.

Therefore, the test preparation stage may be further included prior to the full-scale test for analyzing the jamming performance. The test preparation radiates the target signal generated based on the received radar signal and the simulated target information to the tracking radar, receives the tracking information that the tracking radar traces the simulated target, and determines the position of the simulated target and the position By comparing the positions of the targets and by setting the difference between them to fall within a range of error. If you do not fall within the error range, the tracking radar will not be able to track the target, so you will be able to calibrate the tracking radar or modify the mock target information accordingly. Once the above test preparation phase is completed, the target signal and the jamming signal are radiated to the tracking radar together to obtain a meaningful result on the jamming interference effect.

As described above, according to the jamming performance testing apparatus 100 of the tracking radar according to the embodiment of the present invention, the jamming performance is analyzed through the simulated target, thereby saving much time and money It can be seen that it is highly valuable in various fields including military use.

Although some embodiments of the present invention have been described above, those skilled in the art will appreciate that various modifications may be made without departing from the spirit of the present invention.

Therefore, the scope of protection of the present invention should be determined by the appended claims and their equivalents.

10: Receiving unit 20: Target signal generating unit
30: jamming signal generator 40: J / S ratio controller
50: transmitting unit 60: tracking information collecting unit
70: jamming performance analysis unit 80: user input unit
100: Tracking radar jamming performance test equipment

Claims (6)

A receiver for receiving a signal from an external tracking radar;
A target signal generator for generating a target signal for simulating a target in response to a signal received through the receiver and predetermined simulated target information;
A jamming signal generator for generating a jamming signal for the tracking radar using a predetermined jamming method using the target signal;
A transmitter for amplifying the generated target signal and the jamming signal and sending the amplified signal to the tracking radar;
A tracking information collecting unit for collecting tracking information on a target simulated by the target signal generating unit from the tracking radar; And
And a jamming performance analyzer for analyzing the jamming performance of the jamming signal based on the tracking information. The method according to claim 1,
Taking into consideration at least any one of a distance between the tracking radar and the simulated target, a size of the target, a speed of the target, a moving direction of the target, a radar cross-section of the target, and the jamming method, And a J / S ratio control unit for adjusting a signal intensity ratio. The method according to claim 1,
Wherein the target signal generator generates the target signal using a digital high-frequency memory or a digital tuning oscillator. The method according to claim 1,
The jamming performance analyzer analyzes the jamming performance of the jamming signal by comparing the position of the target simulated by the target signal generator and the position of the target tracked by the tracking radar obtained from the tracking information, Device. The method according to claim 1,
Inputting mock target information and a jamming method including at least one of a distance between the tracking radar and a target, a target movement, a target movement direction, a target size, a target speed, and a target radar cross- Further comprising a receiving user input,
Wherein the target signal generator and the jamming signal generator generate the target signal and the jamming signal in response to the input of the user. Receiving a signal from an external tracking radar;
Generating a target signal that simulates a target corresponding to a signal received from the tracking radar and predetermined simulated target information;
Generating a jamming signal for the tracking radar using a predetermined jamming method using the target signal;
The intensity of the target signal and the jamming signal in consideration of at least one of the distance between the tracking radar and the target according to the target signal, the size of the target, the speed of the target, the moving direction of the target, the radar cross- Adjusting a ratio;
Amplifying the target signal whose intensity ratio is adjusted and the jamming signal and transmitting the amplified signal to the tracking radar;
Obtaining tracking information on a target tracked from the tracking radar based on the target signal; And
And analyzing the jamming performance of the jamming signal by comparing the position of the target according to the target signal with the position of the target obtained through the tracking information.
KR1020140004752A 2014-01-14 2014-01-14 Apparatus for testing jamming performance of tracking radar and method therefor KR101522207B1 (en)

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Cited By (8)

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KR101925488B1 (en) 2018-06-14 2018-12-05 엘아이지넥스원 주식회사 Method and apparatus for selecting minimum interference frequency based on jamming detection with minimum time resource and statistical processing
KR102020457B1 (en) * 2019-05-13 2019-09-10 한화시스템(주) Apparatus and method for processing targets using detecting information of Identification Friend or Foe
KR20190108292A (en) * 2018-03-14 2019-09-24 국방과학연구소 Method and apparatus for calculating jamming power
KR102027132B1 (en) 2019-03-11 2019-10-01 신현성 Method for tracing and monitoring target object
KR20200082286A (en) * 2018-12-28 2020-07-08 국방과학연구소 The apparatus for the electronic warfare system with non real time threat analysis and Electronic attack
KR20210153468A (en) * 2020-06-10 2021-12-17 국방과학연구소 Non communication electronic warfare design analysis support system based engineering modeling and control method thereof
KR20230030361A (en) * 2021-08-25 2023-03-06 국방과학연구소 Jamming simulation method and apparatus for analyzing jamming performance of passive radar
KR102589829B1 (en) * 2023-04-04 2023-10-16 한화시스템 주식회사 Validation apparatus and method for radar training device

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
KR102112297B1 (en) * 2018-03-14 2020-05-19 국방과학연구소 Method and apparatus for calculating jamming power
KR20190108292A (en) * 2018-03-14 2019-09-24 국방과학연구소 Method and apparatus for calculating jamming power
KR101925488B1 (en) 2018-06-14 2018-12-05 엘아이지넥스원 주식회사 Method and apparatus for selecting minimum interference frequency based on jamming detection with minimum time resource and statistical processing
US11329753B2 (en) 2018-12-28 2022-05-10 Agency For Defense Development Electronic warfare system device with non-real-time threat signal analysis and electronic attack function
KR20200082286A (en) * 2018-12-28 2020-07-08 국방과학연구소 The apparatus for the electronic warfare system with non real time threat analysis and Electronic attack
KR102164476B1 (en) * 2018-12-28 2020-10-12 국방과학연구소 The apparatus for the electronic warfare system with non real time threat analysis and Electronic attack
KR102027132B1 (en) 2019-03-11 2019-10-01 신현성 Method for tracing and monitoring target object
KR102020457B1 (en) * 2019-05-13 2019-09-10 한화시스템(주) Apparatus and method for processing targets using detecting information of Identification Friend or Foe
KR20210153468A (en) * 2020-06-10 2021-12-17 국방과학연구소 Non communication electronic warfare design analysis support system based engineering modeling and control method thereof
KR102395128B1 (en) 2020-06-10 2022-05-09 국방과학연구소 Non communication electronic warfare design analysis support system based engineering modeling and control method thereof
KR20230030361A (en) * 2021-08-25 2023-03-06 국방과학연구소 Jamming simulation method and apparatus for analyzing jamming performance of passive radar
KR102593897B1 (en) 2021-08-25 2023-10-24 국방과학연구소 Jamming simulation method and apparatus for analyzing jamming performance of passive radar
KR102589829B1 (en) * 2023-04-04 2023-10-16 한화시스템 주식회사 Validation apparatus and method for radar training device

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