Radar narrow-band interference identification method based on envelope histogram distribution

An identification method and narrow-band interference technology, which is applied in the field of radar interference signal classification and identification, can solve the problems of interference identification and selection of anti-interference measures relying on manual judgment and setting, so as to enhance the ability of automatic selection, reduce the amount of calculation, and improve operational efficiency. The effect of potency

Pending Publication Date: 2022-05-13
中国船舶集团有限公司第七二四研究所
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Problems solved by technology

[0004] In order to overcome the shortcomings of traditional radar that rely more on manual judgment and setting in the selection of interference identification and anti-interference measures, which has strong ambiguity and subjectivity, by constructing equal-amplitude histograms and analyzing the distribution characteristics of the compensated histograms, The present invention proposes a radar narrowband interference identification method based on envelope histogram distribution

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  • Radar narrow-band interference identification method based on envelope histogram distribution
  • Radar narrow-band interference identification method based on envelope histogram distribution

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Embodiment Construction

[0030] The realization process of the present invention is as figure 1 As shown, the specific description is the following process:

[0031] S1: Echo amplitude envelope construction. The radar echo envelope represents the energy distribution characteristics of the echo signal received by the radar. In order to obtain the radar echo envelope and reduce the dynamic range of the echo, the original zero-IF echo data x of the radar is taken as a modulus and then logarithmized. :

[0032] y=A×logB(|x|) (15)

[0033] Among them, y represents the logarithmization result of the echo amplitude envelope, A represents the amplitude coefficient, logB(·) represents the logarithm based on B, and |·| represents the modulus value of the vector element.

[0034] S2: Histogram distribution statistics with constant amplitude. The envelope histogram distribution is a typical feature of active interference, which can reflect the difference in amplitude distribution between different types of in...

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Abstract

The invention relates to a radar narrow-band interference identification method based on envelope histogram distribution. Aiming at the defects of fuzziness and subjectivity caused by more dependence on manual judgment and setting on traditional radar interference type confirmation and anti-interference measure selection, the invention provides a method for accurately classifying four typical narrow-band interferences, namely narrow pulse interference, suppressing interference, deception interference and convolution interference. The method comprises the specific steps of echo amplitude envelope construction, constant amplitude histogram distribution statistics, near window fine compensation, adaptive classification and recognition and the like. According to the invention, the automatic selection capability of anti-interference measures is effectively enhanced, and the operational effectiveness of the radar in a complex electromagnetic environment is improved.

Description

technical field [0001] The invention relates to an interference identification method, which is mainly used in the field of classification and identification of radar interference signals. Background technique [0002] Accurate and real-time perception of space interference situation in a complex electromagnetic environment is an important prerequisite for optimal selection of countermeasures and refined and hierarchical interference suppression in the game between radar and electronic warfare equipment. With the continuous development of electronic warfare equipment, typical jamming patterns such as narrow pulse jamming, suppressive jamming, deceptive jamming, and convolution have been proposed one after another, posing new challenges to modern radars' ability to perceive the battlefield jamming environment. [0003] The literature "Research and Implementation of Radar Active Interference Signal Identification Method" (Beijing Institute of Technology) uses digital channeliz...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 王志刚李颖邹成晓耿利祥杨志昆
Owner 中国船舶集团有限公司第七二四研究所
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