Interference source individual identification method based on envelope fingerprint features

A fingerprint feature and recognition method technology, applied in the field of target recognition, can solve problems such as poor stability and high requirements for channel cleanliness, and achieve the effect of increasing recognition efficiency.

Pending Publication Date: 2021-08-06
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, additional AM has higher requirements on the "cleanness" of the cha

Method used

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  • Interference source individual identification method based on envelope fingerprint features
  • Interference source individual identification method based on envelope fingerprint features
  • Interference source individual identification method based on envelope fingerprint features

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Experimental program
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Embodiment 1

[0037] This embodiment describes the individual identification of the interference source based on the fingerprint feature of the envelope waveform under the AWGN channel, specifically: by extracting the frontier of the pulse envelope as a distinguishing feature between different individuals, and then realizing individual identification;

[0038] In specific implementation, such as figure 1 shown. Including the following steps:

[0039] Step A, establishing a radar interference source signal model;

[0040] The reason for the modeling in step A is that the inherent properties of the internal components of the transmitter and the influence of other non-ideal factors cause the pulse envelope waveform to no longer be an ideal rectangle and contain rich nonlinear features: the rise time of the pulse will become longer; The top of the pulse will fall; the fall time will be longer; if figure 2 shown.

[0041] figure 2 In the ideal case, the radar emission waveform expression ...

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Abstract

The invention relates to an interference source individual identification method based on envelope fingerprint features and belongs to the technical field of target identification. The method comprises the following steps of 1) establishing a radar interference source signal model; 2) establishing a simulation model of a wireless channel; 3) extracting a leading edge feature enveloped by a radar interference source signal as a fingerprint feature identified by a radiation source individual; 4) repeating the step 3), extracting the envelope leading edge feature of each radar interference source signal, and establishing an envelope fingerprint feature library; 5) processing the radar echoes to obtain envelope fingerprint features of the standard radar echoes; 6) identifying active interference signals, and classifying the active interference signals into suppressing interference and deceptive interference; and 7) receiving and analyzing the echo envelope fingerprints of the deceptive interference identified in the step 6), and comparing the echo envelope fingerprints with the envelope fingerprints in the envelope fingerprint feature library in the step 4). The method is simple and convenient; scientific basis is provided for electronic system design, and identification efficiency is improved.

Description

technical field [0001] The present application relates to an interference source individual identification method based on envelope fingerprint features, which belongs to the technical field of target identification. Background technique [0002] Radar interference pattern recognition means that when the radar is affected by the interference signal, it extracts the characteristics of the signal and judges it, so as to know the type of the unknown interference signal, so as to facilitate the subsequent adoption of corresponding anti-interference measures to ensure the normal operation of the own radar. The traditional radar interference identification method, one is based on the obtained prior information, using the knowledge of probability to establish a statistical model, combined with the observation of the radar display interface by the radar operator, and relying on subjective experience to judge the type of interference. The essence of this method is The above is a maxi...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S7/36G01S7/41
CPCG01S7/021G01S7/36G01S7/414G01S7/418G01S7/411
Inventor 傅雄军董健刘利民胡文华宋瑶罗彬珅孟宪鹏谢民卢继华杜慧茜马志峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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