Radar active interference signal parameter extraction and interference pattern recognition method and device

A technology of active interference and signal parameters, applied in the field of signal processing, can solve the problems of poor identification effect, lack of effective identification methods for radar interference signals, and few researches on multi-interference identification of different frequencies at the same time

Pending Publication Date: 2020-09-22
SHANGHAI ZHILIANG ELECTRONICS TECH CO LTD
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Problems solved by technology

Radar is no longer faced with a single type of electronic interference, but usually multiple different types of interference, or even compound interference, generated by multiple interference sources. These interferences are distributed in a wide frequency band, with flexible parameters and interference Variety of styles poses a serious threat to radar
Although there have been many studies

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  • Radar active interference signal parameter extraction and interference pattern recognition method and device
  • Radar active interference signal parameter extraction and interference pattern recognition method and device
  • Radar active interference signal parameter extraction and interference pattern recognition method and device

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Embodiment Construction

[0113] In order to be able to understand the technical content of the present invention more clearly, the following embodiments are specifically described in detail.

[0114] Such as figure 1 As shown, the existing working principle is that after receiving the radio frequency signal of the jamming radar, it is converted into an intermediate frequency signal through the microwave link, and then converted into a digital intermediate frequency signal through high-speed digital sampling, which enters the bandwidth estimation and frequency estimation of the radar jamming signal identification , Power estimation, pulse pressure peak point estimation, sweep frequency judgment, interference parameter identification and other functions, and finally output the existing radar interference signal parameters, including interference frequency, interference bandwidth, interference power, interference pattern, interference mode and other parameters. Among them, the receiving antenna, microwave co...

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Abstract

The invention relates to a radar active interference signal parameter extraction and interference pattern recognition method and device and belongs to the technical field of signal processing. The method of combining broadband frequency domain processing and narrowband time domain processing is adopted, signals are accurately detected in real time by adopting a double-threshold signal detection algorithm, the method is advantaged in that signal bandwidth and frequency estimation precision is improved, pulse pressure data deviation rate calculation and peak value correction are carried out, pulse pressure peak value determination accuracy is improved, interference signal identification accuracy is substantially improved, the method is simple and convenient in application realization mode and strong in practicality, and simultaneous different-frequency multi-interference identification capability is realized.

Description

Technical field [0001] The present invention relates to the technical field of signal processing, in particular to the technical field of radar, and specifically to a method and device for extracting radar active interference signal parameters and identifying interference patterns. Background technique [0002] Radar interference refers to changing the echo signal parameters, disturbing the radar's detection and tracking targets, and then affecting the correct judgment of the radar. It mainly includes active interference and passive interference. [0003] According to the result of interference affecting the real target signal, radar active interference can be divided into suppressive interference, deceptive interference, and combined interference of the two. Suppressive interference refers to interference whose interference energy is much larger than the useful signal. Since the radar receiver detects the target based on the pulse pressure result, the suppressed interference will ...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S7/36
CPCG01S7/021G01S7/36
Inventor 陈志玉吴磊詹健
Owner SHANGHAI ZHILIANG ELECTRONICS TECH CO LTD
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