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Cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference

A technology of slice reconstruction and waveform design, applied in radio wave measurement systems, instruments, etc., can solve the problems that real targets cannot be correctly detected by radar, the anti-jamming performance is degraded, and the anti-jamming performance is poor, so as to achieve effective detection, real-time Good sex and the effect of enhancing work ability

Active Publication Date: 2017-02-22
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, the anti-jamming performance is poor when targeting other types of non-replicating spoofing jamming, especially when the jamming machine retransmits the jamming signal relative to the radar echo signal. Severe drop, real targets may not be detected correctly by radar
Judging from the currently published literature, there is no research on the design of radar transmission waveforms for anti-instantaneous forwarding slice reconstruction interference

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  • Cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference
  • Cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference
  • Cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference

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Embodiment Construction

[0026] The present invention is based on cognitive pulse radar, and provides a method for designing radar phase encoding waveforms against instantaneous retransmission slice reconstruction interference including the following steps:

[0027] Such as figure 1 As shown, a radar phase-encoded waveform design method against instantaneous retransmission slice reconstruction interference includes the following steps:

[0028] Step 1: Interference detection step

[0029] Cognitive pulse radar continuously emits chirp signals, while continuously receiving echo signals, and performs basic analysis on the echo signals to determine whether slice reconstruction interference signals are detected in the echo signals, and if there is no slice reconstruction interference If it exists, proceed to step 1. If the interference of slice reconstruction is indeed detected, proceed to step 2. There are mature technologies for the detection of slice reconstruction interference, so this article will not rep...

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Abstract

The invention provides a cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference. The cognition radar waveform design method for resisting instantaneous transmitting slice reconstruction interference is characterized by utilizing the prior information obtained by a cognition radar to extract the parameters related with slice reconstruction interference among from the prior information; and according to the minimum cross correlation integral sidelobe level criterion between the weighted waveform autocorrelation integral sidelobe level and the weighted waveform and slice reconstruction interference, designing a phase coding transmitted waveform which can satisfy the anti-interference performance index. In the instantaneous transmitting slice reconstruction interference scene, the cognition radar waveform design method can improve the signal to interference ration nearby the real target to achieve the aim of correctly detecting the real target, has the advantages of being high in the real-time property and extensive in applicability, and can be applied to a radar electronic countermeasure system to significantly improve the operational capability of the radar in a new interference environment.

Description

Technical field [0001] The invention belongs to the field of radar anti-jamming technology, and particularly relates to radar anti-jamming waveform design technology. Background technique [0002] The new jammer based on digital radio frequency memory (DRFM) makes the radar face interference signals that are coherent with the transmitted signal. [0003] After intercepting the radar detection signal, the jammer copies, transforms and modulates it to form an jamming signal, and then forwards the jamming signal back to the radar receiver to form a new type of deception jamming that is related to the transmitted signal. One of the typical new deception interference is slice reconstruction interference, see US patent "MJSparrow, J. Cakilo. ECM techniques to counterpulse compression radar. United States Patent, 7081846, 2006-07-25", this type of interference will affect The normal detection of targets by radar also greatly consumes radar resources. Especially when the jammer can forwa...

Claims

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Application Information

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IPC IPC(8): G01S7/36G01S7/41
CPCG01S7/36G01S7/411
Inventor 崔国龙盛彪胡露卢金伟孔令讲张天贤杨晓波易伟
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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