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Multi-station radar anti-deception jamming method and system under multiple interference sources

A deceptive jamming and multi-jamming technology, applied in the field of radar, can solve the problem that the distributed multi-station anti-spoofing jamming cannot be applied to multiple interference sources, and achieve the effect of overcoming the inability to apply to multiple interference sources

Active Publication Date: 2021-10-22
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]The purpose of the present invention is to overcome the deficiencies in the prior art and provide a multi-station radar anti-spoofing jamming method without any prior information , it can identify false targets generated by any modulation method, and at the same time, it can overcome the problem that the existing distributed multi-station anti-spoofing interference method cannot be applied to multiple interference sources

Method used

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  • Multi-station radar anti-deception jamming method and system under multiple interference sources
  • Multi-station radar anti-deception jamming method and system under multiple interference sources
  • Multi-station radar anti-deception jamming method and system under multiple interference sources

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Embodiment 1

[0049] Such as figure 1 , an embodiment of the present invention provides a multi-station radar anti-spoofing interference method under multiple interference sources, including:

[0050] obtaining a received signal vector of a target, wherein the target is detected by the distributed multi-station radar;

[0051]According to the received signal vector, calculate the correlation coefficient between two different targets, and quantize to obtain the correlation coefficient matrix between each target;

[0052] Use the correlation coefficient matrix to count the number of other targets related to each target, and obtain the target quantity vector of each target;

[0053] Comparing each element in the target number vector of each target with the discrimination threshold, it is obtained whether each target is an active false target, and anti-deception jamming is realized.

[0054] Specific steps are as follows:

[0055] Step 1: Obtain the received signal vector of the target detec...

Embodiment 2

[0076] In this embodiment, a multi-station radar anti-spoofing interference method provided by the present invention is used in computer simulation to verify the ability of the present invention to identify active false targets in the scene of deceptive interference by multiple interference sources.

[0077] Such as figure 2 As shown, the distributed multi-station radar is composed of two transmitting stations and one receiving station, and detects the area where an aircraft formation is located. There are five aircraft in the aircraft formation as real radar targets, two of which carry active jammers to deceptively jam distributed multi-station radars. The location coordinates of different transmitting stations, receiving stations and targets are shown in Table 1.

[0078] Table 1: Position coordinates of each transmitting station, receiving station and target

[0079]

[0080]

[0081] The antenna gains of all transmitting stations and receiving stations are the sam...

Embodiment 3

[0088] An embodiment of the present invention provides a multi-station radar anti-spoofing interference system under multiple interference sources, including:

[0089] Acquisition module: used to obtain the received signal vector of the target detected by the distributed multi-station radar;

[0090] The first calculation module: used to calculate the correlation coefficient between different two targets according to the received signal vector, and obtain the correlation coefficient matrix between each target by quantization;

[0091] The second calculation module: used to use the correlation coefficient matrix to count the quantity of other targets related to each target, and obtain the target quantity vector of each target;

[0092] Identification module: it is used to compare each element in the target number vector of each target with the identification threshold to obtain whether each target is an active false target, so as to realize anti-deception interference.

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Abstract

The invention discloses a multi-static radar active false target identification method and system. The method comprises the steps: obtaining a receiving signal vector of a target, wherein the target is obtained through the detection of a multi-static radar; calculating a correlation coefficient between every two targets according to the received signal vectors; performing clustering analysis on the target according to the correlation coefficient; and identifying a clustering analysis result by adopting threshold detection to obtain a clustering category, and acquiring whether each target in the cluster is an active false target according to the clustering category. According to the invention, the problem that the existing multi-static radar anti-deception jamming method cannot be applied to multiple jamming sources can be solved.

Description

technical field [0001] The invention relates to a multi-station radar anti-spoofing interference method and system under multiple interference sources, belonging to the technical field of radar. Background technique [0002] Active spoofing jamming is an important jamming pattern faced by radar, and it has a high energy efficiency due to the radar matched filter gain. With the development of digital radio frequency memory (DRFM) technology, deception jammers can generate a large number of active false targets by storing and delaying forwarding, which constitutes deception to radar systems to confuse or saturate target detection and tracking algorithms. In a complex combat environment, multiple deception jammers can be connected to form a network to greatly improve their deception and jamming capabilities, which poses a huge challenge to radar electronic countermeasures. Distributed multi-station radar is composed of multiple spatially dispersed transmitting stations, receiv...

Claims

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Application Information

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IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 赵珊珊易民举杨彪刘子威
Owner NANJING UNIV OF POSTS & TELECOMM
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