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A radar jamming rapid identification method

An identification method, radar interference technology, applied to radio wave measurement systems, instruments, etc., can solve problems such as increasing the burden on signal processing circuits, little significance in engineering implementation, and affecting anti-interference measures, etc., to achieve rapid, effective and real-time interference identification High, simple algorithm effect

Active Publication Date: 2017-12-12
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology

This method can accurately identify a variety of interference types, but the wavelet analysis and the bispectral analysis method of the third-order statistics have a huge amount of calculation, which greatly increases the burden on the signal processing circuit, takes up a lot of processing time, and seriously affects the follow-up. The implementation of anti-interference measures, so the engineering realization is of little significance

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  • A radar jamming rapid identification method

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Embodiment Construction

[0021] based on the following figure 1 Preferred embodiments of the present invention will be described in detail.

[0022] Such as figure 1 As shown, the present invention provides a method for quickly identifying radar interference, comprising the following steps:

[0023] Step S1, in the routine detection of the tracked target of each frame of radar echo signal, perform a sudden change judgment on the AGC value of the current frame, and if the AGC value has a sudden change, proceed to step S2;

[0024] Step S2. Perform multi-target detection on the current two-dimensional detection plane after the tracking points and their protected areas have been removed. If multiple targets are detected, record the distance- and frequency-dimension coordinates of these multi-target points, and proceed to step S3. If not detected to the target, proceed to step S4;

[0025] Step S3: Perform Doppler dimension diffusion detection on the detected multi-target points. If Doppler expansion p...

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Abstract

The invention provides a radar jamming rapid identification method. On the premises of AGC sudden changes, multi-target detection is performed and types of signals entering a range gate currently are judged comprehensively according to relations between multiple targets and waveform entropy changes, so that conventional jamming types can be rapidly identified. The method can achieve rapid identification of multiple kinds of jamming with a small quantity of calculation and without additional circuit modules, reserves more sufficient processing time and provides bases for subsequent jamming resisting measures. The method is suitable for complex scenes with coexistence of multiple kinds of jamming, such as chaff jamming, noise jamming, range gate pulling off jamming and outboard dragging; the method has the advantages of low calculation complexity, great instantaneity and rapid and effective jamming identification; radar signal processing system hardware does not need extra circuit modules, and algorithms are simple; the method can be applied to engineering practices conveniently.

Description

technical field [0001] The invention relates to a method for quickly identifying radar interference. Background technique [0002] The anti-jamming measures available to the radar depend on the ability of the signal processing system to identify the jamming. Conventional radars should have multiple active or passive jamming capabilities such as anti-tow, anti-chaff, and anti-noise. However, an interference suppression algorithm is often only effective for one type of interference. In actual communication countermeasures, due to the complexity and variety of interference means, there may be one or more unknown types of interference in the received signal. If all interference countermeasures are blindly added to each target detection, it will undoubtedly cause a great burden on the signal processing circuit and seriously affect the real-time performance of signal processing. Therefore, it is of great significance to accurately and quickly identify the type of interference and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S7/02
CPCG01S7/021G01S7/36
Inventor 李爽爽蔡信郑鑫沈謇王志诚李芬
Owner SHANGHAI RADIO EQUIP RES INST
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