RGPO interference identification method based on filtered data processing

Abstract

The invention discloses an RGPO interference identification method based on filtered data processing, thereby solving a problem that the false track occurring at a certain time can not be identified easily when the duration of RGPO interference is short in the prior art. According to the method, asingle target in a simulation plane makes constant-speed linear motion to obtain a real track of the target; measured value of the radar before and after the RGPO interference occurrence are obtained based on the real track of the target; filtering is carried out based on the measured value observed by the radar, innovation normalized distances dk of all times are calculated in the filter process and dk distribution is determined; an interference discriminating factor lambda k is calculated; hypothesis testing is constructed; lambda k distribution is deduced by the dk distribution and a determination threshold eta of the lambda k is determined; the lambda k and the eta are compared; if the lambda k is less than or equal to eta, the radar is in a normal tracking state; otherwise, the radar is under the RGPO interference. Therefore, the RGPO interference is identified effectively; the falsetrack occurring at a certain time can not be identified; the cheated probability of the radar is reduced. The method can be applied to the single radar tracking.

Description

technical field [0001] The invention relates to the field of radar technology, in particular to a method for identifying interference by a range gate towing RGPO backwards, which can be used for a single radar system to effectively identify false tracks that appear at certain moments, and realize the identification of track deception interference by the radar system. Background technique [0002] In recent decades, electronic jamming ECM has played an increasingly important role in military operations, and its related research has also achieved unprecedented development. Radar electronic jamming measures include active jamming and passive jamming, and active jamming can be divided into suppressive jamming and deceptive jamming. Deceptive jamming is that the jammer copies and forwards the radar transmission signal to generate a lot of false target jamming to deceive and confuse the enemy's radar, making it difficult for the enemy's radar to distinguish between true and false....

AI Technical Summary

Problems solved by technology

When the signal-to-noise ratio is low, the probability of "fake" will be very high

Some scholars proposed that the combination of the above detection methods can make the probability of "abandoning the true" and "taking the false" as small as possible at the same time. After the above detection method, the measured value is reduced, and it is difficult to identify whether the radar is interfered by RGPO

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