False target identification method with combination of two-coordinate radar and three-coordinate radar statistics

Abstract

The invention relates to a false target identification method with the combination of two-coordinate radar and three-coordinate radar statistics, and the problem of the insufficient use of target position information in the prior art is solved. The scheme comprises the steps of (1) using a three-coordinate radar to measure a target, and obtaining the measurement value of the three-coordinate radar, (2) using a two-coordinate radar to measure the target, and obtaining the measurement value of the two-coordinate radar, (3) calculating the coordinate of the target in a unified right-angle rectangular coordinate system according to the measurement value of the three-coordinate radar, and calculating the position information estimation value of the target relative to the two-coordinate radar according to the coordinate, (4) obtaining a distance-azimuth combined variance of the target according to the position information estimation value of the target relative to the two-coordinate radar, (5) calculating the unified difference of the estimation value and the measurement value of the target relative to the two-coordinate radar and calculating the variance, (6) constructing an identification inspection statistic, and (7) comparing a decision threshold and the identification inspection statistic to realize the identification of true and false targets. The effective resistance to the false target can be completed.

Description

technical field [0001] The invention belongs to the field of radar technology, and in particular relates to a method for discriminating true and false targets, which can be used to realize effective countermeasures against deceptive interference by networked radars. Background technique [0002] In today's complex electromagnetic environment, in order to ensure the concealment of the real target, jammers are usually deployed around the real target to interfere with the received radar detection signal, and then forward it back to the radar after changing its parameters. To disrupt radar detection and tracking of real targets. In recent years, the gradual development and maturity of digital radio frequency memory DRFM provides favorable conditions for jammers to produce high-fidelity false targets. However, the existence of deceptive false targets will cause a large loss of radar system resources, which will gradually increase the cost and complexity of a single radar to comb...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned networked radar false target identification method only uses the distance and azimuth information of the target, but does not effectively use the pitch angle information of the target, resulting in a decrease in the utilization rate of target information, the identification accuracy of the real target and the risk of being deceived by the networked radar. Probability of adversely affecting

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