Method for preventing intense distance false object interference radar network based on doppler velocity detection

Abstract

The invention provides an authentication method based on object doppler velocity estimation and aims at addressing the problem of deteriorating authentication effects along with the increasing intensity with the false objects in the course of authenticating intense distance false object interference by a radar. The method includes the following steps: firstly selecting a standard radar and conducting measurement grouping pre-processing, converting other networking radar object measurement to a standard radar local coordinate system and conducting measurement association based on position information in order to rule out irrelevant false measurement and noise wave and at the same time reduce calculation; then estimating an object doppler velocity based on the position information measured after the coordinate conversion, conducting authentication in accordance with the standard radar doppler velocity measurement so as to authenticate the false object. Compared with classical authentication methods which associate based on position information, according to the invention, the method herein can guarantee high authentication rate of true and false object under circumstances when intensity from the multiple false object is greater.

Description

technical field [0001] The invention belongs to the field of radar data processing, and is suitable for solving the problem of jamming identification of false targets with dense distances in radar networks. Background technique [0002] With the gradual development of modern electronic warfare technology, the way of radar networking is being used more and more in the tracking and detection of targets, and the way of jamming the radar network is also constantly updated. Deceptive jamming uses advanced devices such as digital radio frequency memory to copy, modulate and forward radar signals, and can obtain better jamming effects with a small investment. Therefore, deceptive jamming and its countermeasure technology have become the research topic of experts at home and abroad. hotspot. [0003] The spoofing jamming of radar distance information is a common way of deceiving jamming, which is mainly realized by the jamming equipment delaying modulation and amplifying and forwar...

AI Technical Summary

Problems solved by technology

The current classic nearest neighbor method can realize the identification of true and false targets when the false target density is small, but when the number of false targets in the distance increases significantly and the false target density increases, only by analyzing the position information of the target. The false association rate of the method for identifying true and false targets will increase, and the identification effect will become worse, and as the density of false targets further increases, the identification effect will deteriorate sharply

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