Recognizing and classifying method for broadband radar interference signals

A technology of jamming signals and broadband radar, applied to radio wave measurement systems, instruments, etc., to achieve the effect of solving the problem of simultaneous multi-jamming identification
CN109459732AActive Publication Date: 2019-03-12UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2019-03-12

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Abstract

The invention discloses a recognizing and classifying method for broadband radar interference signals. The method comprises the following steps of S1, obtaining radar interference signals, processingthe signals, and obtaining digital video signals; S2, performing short-time Fourier conversion on the digital video signals, and obtaining a time frequency matrix; S3, according to a ranking statistics constant false-alarm method, processing the time frequency matrix, and obtaining a constant false-alarm detection matrix; S4, calculating parameters of interference signals in the constant false-alarm detection matrix, and integrating the parameters of the interference signals into a signal parameter matrix, and obtaining an interference signal detection result; S5, according to the interferencesignal detection result, calculating interference signal characteristics; S6, according to the interference signal characteristics, recognizing and classifying the interference signals. According tothe interference-based time-frequency signal characteristics, nine broadband radar interferences are recognized and classified, and the method has the capability of multi-interference (non-overlappedon frequency) classifying and recognizing.
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Description

technical field

[0001] The invention belongs to the technical field of broadband radar, and in particular relates to a method for identifying and classifying interference signals of broadband radar. Background technique

[0002] The electromagnetic environment of the modern battlefield is becoming more and more complex. With the emergence of digital radio frequency memory (DRFM) technology, new types of deception jamming against linear frequency modulation (LFM) radar signals emerge in an endless stream. What radars face is no longer a single type of electronic interference, but usually different The interference of different modulation types, even composite interference, generated by the interference source, these interferences are distributed in a wide frequency band, the parameters are flexible and changeable, and the interference patterns are diversified, which poses a serious threat to the radar. Although there have been many studies on a single type of interference ide...

Claims

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