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A Cooperative Anti-Jamming Method for Active and Passive Radar Based on Waveform Design

A waveform design and passive radar technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of high probability of false target misidentification and increased radar resource consumption, so as to improve anti-interference ability, suppress interference, and increase the power range Effect

Inactive Publication Date: 2016-12-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

However, this method deals with interference at the data processing level, which increases the resource consumption of the radar, and has a high probability of misidentifying false targets.

Method used

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  • A Cooperative Anti-Jamming Method for Active and Passive Radar Based on Waveform Design
  • A Cooperative Anti-Jamming Method for Active and Passive Radar Based on Waveform Design
  • A Cooperative Anti-Jamming Method for Active and Passive Radar Based on Waveform Design

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Embodiment Construction

[0025] The specific implementation of the present invention is described below by taking speed deception interference as an example, and the steps are as follows:

[0026] Step 1 Passive radar jamming detection

[0027] The active and passive radars work at the same time, the active radar continuously emits pulse signals, and both the active and passive radars continuously receive the radar echo signals and process the echo signals. Passive radar detects a specific area in real time. After receiving the radar echo reflected by the target, it uses the binary hypothesis detection theory to detect interference:

[0028] H 0 : x ( t ) = s ( t ) + ...

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Abstract

The invention is an active and passive radar cooperative anti-jamming method based on waveform design, which belongs to the technical field of radar anti-jamming, and particularly relates to radar waveform design technology. The invention adopts the active and passive radar cooperative working mode, uses the echo information detected by the passive radar in real time to detect and identify interference, and estimates the relevant parameters of the interference, and the active radar uses the interference information provided by the passive radar to design the optimal launch Waveform, and the echo information is processed, so it has the effect of small calculation, high real-time performance, and improving the anti-interference ability of radar in complex electromagnetic interference environment.

Description

technical field [0001] The invention belongs to the technical field of radar anti-jamming, and in particular relates to radar waveform design technology. Background technique [0002] Modern radars work in complex electromagnetic interference environments, and must have effective anti-interference capabilities to survive on the battlefield. With the development of radar jamming technology, especially the emergence of active deception jamming technology based on digital radio frequency memory (DRFM), it has brought great challenges to the accuracy of radar target detection and the stability of target tracking. Radar anti-jamming technology is facing with increasing difficulties. There are many types of radar active deception jamming, and a large jamming effect can be obtained with a low interference-to-signal ratio gain, which makes it difficult for the radar to detect and track the real target correctly, and seriously reduces the detection and tracking performance of the ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 崔国龙吴健郝凯利于立岩孔令讲易伟杨晓波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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