CN204989459U - Angle deception jamming device to pulse homing guidance radar - Google Patents
Angle deception jamming device to pulse homing guidance radar Download PDFInfo
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- CN204989459U CN204989459U CN201520330548.2U CN201520330548U CN204989459U CN 204989459 U CN204989459 U CN 204989459U CN 201520330548 U CN201520330548 U CN 201520330548U CN 204989459 U CN204989459 U CN 204989459U
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Abstract
The utility model relates to a radar electronic countermeasure technical field discloses an angle deception jamming device to pulse homing guidance radar, and the radar signal who has captures and selects separately identification module, include: direction -finding receiver, frequency measurement receiver, preprocessor, host processing ware, direction -finding receiver, the input of frequency measurement receiver passes through receiver frequency channel 1 and links to each other with the receiving antenna array to receiver frequency channel n, direction -finding receiver's output passes through radar signal reconsitution module and links to each other with convolution algorithm signal processor DSP first input end, the output of frequency measurement receiver links to each other with convolution algorithm signal processor DSP second input like the template library module through extension target one -dimensional distance, convolution algorithm signal processor DSP's output passes through interfering signal generation module and links to each other with disturbing the emit antenna array, the utility model discloses can completely embody many scattering point characteristic of being screened the target, make pulse homing guidance radar cause good angle deception jamming effect.
Description
Technical field
The utility model relates to Radar ECM technical field, particularly relates to a kind of angle deception interference device for single-pulse track guidance radar.
Background technology
Monopulse radar angle measurement is fast, precision is high, is to remote motion or the most effective detection means of static target, has been widely used in all kinds of Deep space tracking guidance radar, airborne radar.In recent years, the perturbation technique research of single-pulse track guidance radar is deepened continuously.
At present, mainly concentrate on two traditional point sources/multiple sources for the conflicting mode of single-pulse track guidance radar to be concerned with angle deception interference.Relevant Dual sources is in the irradiation wave beam of single-pulse track guidance radar, arranges interference source, target is considered as point target in target proximity, produces the undesired signal relevant with real goal phase of echo based on Mass Model.For the target of reduced size, this interference can form signal phase wavefront distortion at radar antenna actinal surface, and cause monopulse radar to produce erroneous angle trace information, interference effect is good.But, when protected target is mainly this kind of large-scale Extended target in naval vessel, and incoming signal possesses comparatively large bandwidth is not less than 140MHz, when range resolution is higher, this kind of its phase of echo of large scale target will be subject to the impact of the complicated scattering properties of target, to target each scattering point position, resolution is opened in distance, there will not be phase of echo to superpose and the angle scintillations that causes.Signal phase when the High Range Resolution echo of real goal arrives Antenna aperture is difficult to and produces undesired signal based on Mass Model and keep stable relation, and namely undesired signal and echoed signal cannot be concerned with.Therefore, the coherent interference equipment based on traditional Mass Model does not have interference effect.
Summary of the invention
For the Extended target of complexity, the utility model provides a kind of angle deception interference device for single-pulse track guidance radar.
For achieving the above object, the utility model adopts following technical scheme:
For an angle deception interference device for single-pulse track guidance radar, comprising: receiving antenna array, radar sigal interception and sorting identification module, radar signal reconstructed module, Extended target one-dimensional range profile template base module, convolution algorithm signal processor DSP, undesired signal generation module, interference transmitting antenna array, described radar sigal interception and sorting identification module comprise: direction-finding receiver, frequency measuring receiver, pretreater, primary processor, radar library module, described direction-finding receiver, the input end of frequency measuring receiver is connected with receiving antenna array by receiver frequency range 1 to receiver frequency range n, the output terminal of direction-finding receiver is connected with convolution algorithm signal processor DSP first input end by radar signal reconstructed module, the output terminal of frequency measuring receiver is connected with convolution algorithm signal processor DSP second input end by Extended target one-dimensional range profile template base module, and the output terminal of convolution algorithm signal processor DSP is connected with interference transmitting antenna array by undesired signal generation module, wherein, the output terminal of direction-finding receiver is also connected with primary processor by pretreater, and the first output terminal of primary processor is connected with radar signal reconstructed module, and the second output terminal of primary processor is connected with frequency measuring receiver.
For an angle deception interference device for single-pulse track guidance radar, described frequency measuring receiver is connected to form by microwave mixer and intermediate frequency amplifier, wave detector and the video amplifier by microwave preselector.
A kind of angle deception interference device for single-pulse track guidance radar, described radar signal reconstructed module is connected with frequency memory circuit, power amplifier by directional coupler by bandpass filter, described directional coupler is connected with power amplifier by detection video amplifier circuit, threshold detector, interference control circuit, and wherein another output terminal of threshold detector, interference control circuit is connected with frequency memory circuit.
For an angle deception interference device for single-pulse track guidance radar, described undesired signal generation module by power compensating circuit by phase compensating circuit and 180 degree of phase shifters in series.
Owing to adopting technical scheme as above, the utility model has following beneficial effect:
The utility model is by carrying out matching treatment by the Wide band scattering characteristic of radar incoming signal and protected target, ensure that undesired signal can the multi-scatter characteristic of complete embodiment protected target, thus produce the undesired signal with Extended target echo with stable phase angle relation at radar antenna actinal surface place.Can also be applied in the countermeasure set in the kinds of platform such as naval vessel, aircraft, provide self-defence electronic interferences ability for Extended target, make single-pulse track guidance radar cause good angle deception interference effect.
Accompanying drawing explanation
Fig. 1 is the angle deception interference device circuit block diagram for single-pulse track guidance radar.
Fig. 2 is the circuit block diagram of frequency measuring receiver in radar sigal interception and sorting identification module.
Fig. 3 is radar signal reconstructed module circuit block diagram
Fig. 4 is undesired signal generation module circuit block diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
For an angle deception interference device for single-pulse track guidance radar, on the working frequency range of typical track and guidance radar, set up the frequency domain response of all-attitude angle target, complete extraction and the modeling of all-attitude angle Range Profile; When the jammer in protected target receive, intercept the transmitting of track and guidance radar time, carry out radar signal parameter measurement, sorting identification and signal reconstruction; Then, reconstruction signal and protected target scattering properties are carried out process of convolution by jammer, and arrange power back-off, phase compensation, additional 180 degree of phase shift parameters, generate the undesired signal with target echo with stable opposite phase.
Fig. 1 is the angle deception interference device composition frame chart for single-pulse track guidance radar, and countermeasure set is made up of seven major parts: receiving antenna array, radar sigal interception and sorting identification module, radar signal reconstructed module, Extended target one-dimensional range profile template base module, convolution algorithm signal processor DSP, undesired signal generation module, disturb transmitting antenna array.
Countermeasure set receives the radar signal being irradiated to target naval vessel by receiving antenna array.In radar sigal interception and sorting identification module, the receiver of antenna array and different frequency range, direction-finding receiver combination, constitute detection and the measuring system of Radar Signal In-Pulse Characteristics being rushed to the angle of arrival, the angle of arrival data of each radar pulse within the scope of real-time output detections; Simultaneously, antenna array and frequency measuring receiver composition are to the detection of other radar pulse parameter and measuring system, the frequency of each pulse within the scope of real-time output detections, time of arrival, pulse width, pulse height data, these parameter combinations form pulse parameter data together, consign to pretreater in real time.
The Study first of the pulse parameter inputted in real time and various known radar and priori are carried out Rapid matching and compare by pretreater, by matching ratio compared with result load each buffer disaggregatedly, the signal irrelevant with crucial radar parameter is rejected immediately.Study first and the priori of various known radar used in pretreater can be loaded in advance.
Primary processor is used for choosing the data in pre-service classification buffer, coupling contrast is carried out with crucial radar parameter file, further rejecting and the unmatched data of Radar Objective Characteristics, then carry out crucial radar parameter estimation, state recognition and threat to the data met the demands to differentiate, and this signal is sent into radar signal reconstructed module.
The crucial radar simulation signal that front end inputs by radar signal reconstructed module becomes the digital quantity of order, be kept in number storage, steering order according to primary processor reads from storer again, recovers complete crucial radar radiofrequency signal, and this signal is sent into convolution algorithm DSP.
In Extended target one-dimensional range profile template base module, jammer utilizes CAD(computer-aided design (CAD) in advance) software sets up the three-dimensional model true to nature on protected target (such as naval vessel or aircraft), and on the working frequency range of single-pulse track guidance radar, utilize Feko(based on the three-dimensional full-wave electromagnetic simulation software of method of moment) calculate multiple incident orientation angle, the angle of pitch, incident frequencies condition under, this three-dimensional model is the frequency domain response of all-attitude angle under 140MHz broadband signal is irradiated.Then, by inverse Fourier transform the frequency domain response of each for protected target attitude angle is converted to the one-dimensional range profile under all-attitude angle, and then set up the all-attitude angle one-dimensional range profile template base of this target, the storage mode of this database is according to Frequency point and attitude angle addressing.
According to frequency information and the angle of arrival information of the output of frequency measuring receiver and direction-finding receiver in radar sigal interception and sorting identification module, countermeasure set finds corresponding Range Profile template and sends into convolution algorithm signal processor DSP in one-dimensional range profile template base.
The crucial radar radiofrequency signal that radar signal reconstructed module exports by convolution algorithm signal processor DSP and the one-dimensional range profile that Extended target one-dimensional range profile template base module exports carry out convolution algorithm, generate the echoed signal retaining target multi-scatter characteristic, and send into undesired signal generation module, launch through transmitting antenna array after generating undesired signal.
Fig. 2 is the frequency measuring receiver composition frame chart in radar sigal interception and sorting identification module.
In frequency measuring receiver, radar signal is sent into microwave mixer with certain passband by microwave preselector, is converted to intermediate-freuqncy signal with after the beat of local oscillator voltage; Again through in put, detection and the video amplifier be added to pretreater.Realize the search of Frequency point finally by change local frequency and determine.IF-FRE is lower than rf frequency, can obtain good selectivity and amplification quantity, highly sensitive, selectivity good.Meanwhile, intermediate-freuqncy signal intactly saves and the frequency of radiofrequency signal and phase information, and amplitude distortion is little, can detect broad pulse linear FM signal and phase-coded signal.
Fig. 3 is radar signal reconstructed module composition frame chart.
Through sorting, identify after track and guidance radar signal pulse 1. deliver to frequency memory circuit and detection respectively through bandpass filter, directional coupler, depending on putting, threshold detector.When pulse energy reaches given thresholding, 2. threshold detector provides enabling signal, and 1. frequency memory circuit is sampled radar signal, and by sample this and remain in frequency memory circuit in digital form; 2. enabling signal also acts on the trigger pip of interference control circuit simultaneously, interference modulating pulse string is produced 3. by interference control circuit, 3. repeat to read the crucial radar sampled signal that keeps in frequency memory circuit 4. according to train of impulses, finally give final power amplifier and convolution algorithm signal processor DSP.
Fig. 4 is undesired signal generation module composition frame chart.
Power compensating circuit is consistent with echoed signal with phase place for ensureing the initial amplitude of undesired signal with phase compensating circuit, then through 180 degree of phase shifters, generates undesired signal, is launched by potato masher antenna.
Claims (4)
1., for an angle deception interference device for single-pulse track guidance radar, it is characterized in that: comprising: receiving antenna array, radar sigal interception and sorting identification module, radar signal reconstructed module, Extended target one-dimensional range profile template base module, convolution algorithm signal processor DSP, undesired signal generation module, interference transmitting antenna array, described radar sigal interception and sorting identification module comprise: direction-finding receiver, frequency measuring receiver, pretreater, primary processor, radar library module, described direction-finding receiver, the input end of frequency measuring receiver is connected with receiving antenna array by receiver frequency range 1 to receiver frequency range n, the output terminal of direction-finding receiver is connected with convolution algorithm signal processor DSP first input end by radar signal reconstructed module, the output terminal of frequency measuring receiver is connected with convolution algorithm signal processor DSP second input end by Extended target one-dimensional range profile template base module, and the output terminal of convolution algorithm signal processor DSP is connected with interference transmitting antenna array by undesired signal generation module, wherein, the output terminal of direction-finding receiver is also connected with primary processor by pretreater, and the first output terminal of primary processor is connected with radar signal reconstructed module, and the second output terminal of primary processor is connected with frequency measuring receiver.
2. a kind of angle deception interference device for single-pulse track guidance radar according to claim 1, is characterized in that: described frequency measuring receiver is connected to form by microwave mixer and intermediate frequency amplifier, wave detector and the video amplifier by microwave preselector.
3. a kind of angle deception interference device for single-pulse track guidance radar according to claim 1, it is characterized in that: described radar signal reconstructed module is connected with frequency memory circuit, power amplifier by directional coupler by bandpass filter, described directional coupler is connected with power amplifier by detection video amplifier circuit, threshold detector, interference control circuit, and wherein another output terminal of threshold detector, interference control circuit is connected with frequency memory circuit.
4. a kind of angle deception interference device for single-pulse track guidance radar according to claim 1, is characterized in that: described undesired signal generation module by power compensating circuit by phase compensating circuit and 180 degree of phase shifters in series.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970374A (en) * | 2017-05-27 | 2017-07-21 | 中国人民解放军63892部队 | The measuring method of Monopulse Radar Target and interference source angle under disturbed condition |
| CN107247256A (en) * | 2017-07-19 | 2017-10-13 | 南京全信光电系统有限公司 | A kind of rf integration detector and method |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
| CN109975772A (en) * | 2018-12-28 | 2019-07-05 | 北京航天测控技术有限公司 | A kind of more radar jamming performance detection systems |
| CN110133604A (en) * | 2019-05-20 | 2019-08-16 | 电子科技大学 | A kind of airborne defensive application Deceiving interference method based on polynary synthetic technology |
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2015
- 2015-05-21 CN CN201520330548.2U patent/CN204989459U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970374A (en) * | 2017-05-27 | 2017-07-21 | 中国人民解放军63892部队 | The measuring method of Monopulse Radar Target and interference source angle under disturbed condition |
| CN106970374B (en) * | 2017-05-27 | 2019-05-07 | 中国人民解放军63892部队 | The measurement method of Monopulse Radar Target and interference source angle under disturbed condition |
| CN107255351A (en) * | 2017-06-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
| CN107255351B (en) * | 2017-06-28 | 2019-08-30 | 广东美的暖通设备有限公司 | Rotation speed of fan control method, rotation speed of fan control system and air-conditioning |
| CN107247256A (en) * | 2017-07-19 | 2017-10-13 | 南京全信光电系统有限公司 | A kind of rf integration detector and method |
| CN109975772A (en) * | 2018-12-28 | 2019-07-05 | 北京航天测控技术有限公司 | A kind of more radar jamming performance detection systems |
| CN110133604A (en) * | 2019-05-20 | 2019-08-16 | 电子科技大学 | A kind of airborne defensive application Deceiving interference method based on polynary synthetic technology |
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Inventor after: Mo Cuiqiong Inventor after: Chen Qiuju Inventor after: Wang Zheng Inventor after: Sun Jie Inventor after: Dai Huanyao Inventor after: Hou Jianzhou Inventor after: Huang Zhenyu Inventor after: Liu Wenzhao Inventor before: Dai Huanyao Inventor before: Zhou Bo Inventor before: Yang Qing Inventor before: Hou Jianzhou Inventor before: Mo Cuiqiong Inventor before: Zhao Jing Inventor before: Chen Qiuju Inventor before: Wang Zheng Inventor before: Huang Zhenyu Inventor before: Liu Wenzhao Inventor before: Zhang Yang |
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Effective date of registration: 20160726 Address after: 230037 Mount Huangshan Road, Anhui, China, No. 460, No. Patentee after: Electronic Engineering College, PLA Address before: 085 box 471003, 01, Henan, Luoyang Patentee before: Unit 63892 of PLA |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20190521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |