Algorithm for False Track Identification in Long Baseline Radar Network Based on Three-Threshold Delay Discrimination

Abstract

The invention discloses a long-baseline radar net false track identification algorithm based on three-threshold delay determination, wherein the algorithm belongs to the field of radar countermeasure technology. A false track interference is a novel interference form and has high discriminating difficulty. The long-baseline radar net false track identification algorithm aims to settle the problems and mainly comprises the following steps of (1), converting measurement of each radar to an ECEF coordinate system, and realizing spatial alignment; (2), estimating a target state by means of Kalman filtering and calculating three polar coordinates of a relative radar; (3), constructing a sample and calculating an examination statistics amount gaba; (4), selecting a significance level and establishing a counter with an initial value of zero; (5), if gaban<=G0.5<n>, determining the track as a true track, if gaban>=G0.01<n>, determining the track as a false track, if G0.1<n><gaban<G0.01<n> and n is smaller than 7, adding one to the read number of the counter, and repeating the steps (2)-(5); and (6), if n=7 and the read number of the counter, determining the track as a false track, and otherwise, determining the track as the true track. The long-baseline radar net false track identification algorithm is suitable for identification of the false track by a long-baseline radar net and furthermore has relatively high engineering application value and good popularization prospect.

Description

technical field [0001] The invention belongs to the technical field of radar countermeasures, and is suitable for discriminating true-false targets by a long-baseline radar network under the interference condition of false tracks. Background technique [0002] Radar countermeasures are an important part of the field of electronic countermeasures in modern warfare. With the development of advanced electronic technology, digital radio frequency memory (DRFM) technology is becoming more and more mature, resulting in the emergence of various advanced radar jamming equipment and jamming styles. Radar networks can Effectively use the advantages of multi-angle and multi-frequency bands of radar in the network to effectively counter various interference patterns such as suppression and deception. In order to achieve a better deception effect on the radar network, false track interference came into being. Through the fine planning of false track, the interference can generate false t...

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Problems solved by technology

[0010] The purpose of the invention is to propose a long-baseline radar network false track recognition algorithm based on three threshold delays to solve the problem that the existing mean value-variance joint inspection method is not suitable for long-baseline radar network and false track misjudgment rate is relatively low. advanced questions

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