Method for cognitive radar target tracking in clutter environment

Abstract

The invention discloses a cognitive radar target tracking method in a clutter environment, which acquires all measurement values ​​at the current moment and calculates the measurement values ​​falling into the correlation wave gate; calculates each measurement value falling into the correlation wave gate The value comes from the probability of the target; calculate the equivalent measurement value at the current moment; use it as the input of the sensory memory, and output the system equation parameters at the current moment; perform state and measurement prediction according to the system equation parameters and equivalent measurement values , to obtain the state prediction covariance; use it as the input of the execution memory, and output the emission waveform parameter set at the current moment; calculate the innovation covariance and the state error covariance under each waveform parameter; carry out optimal waveform parameter selection ; Calculate the innovation covariance, state error covariance and state estimation value at the current moment according to the optimal waveform parameters. The invention solves the problem that the existing cognitive radar target tracking technology cannot operate normally in the clutter environment, and can improve the tracking performance in the clutter environment.

Description

technical field [0001] The invention belongs to the technical field of radar data processing, and in particular relates to a cognitive radar target tracking method in a clutter environment. Background technique [0002] The traditional target tracking radar (Traditional Active Radar, TAR) only transmits a fixed waveform, and adopts an adaptive signal processing algorithm at the receiving end to improve the tracking performance, while the measurement, resolution and other indicators of the radar largely depend on the parameters of the transmitted waveform. When the environment changes, it is difficult to achieve the ideal tracking effect only by using adaptive filtering. Therefore, adaptive technology is applied to the transmitter, and then adaptive radar (Fore-active Radar, FAR) appears, which can dynamically select transmit waveform. At the same time, knowledge-based radar signal and data processing methods have also achieved remarkable results and progress, and the adapti...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims at the problem that the target echo and the clutter echo are mixed together in the clutter environment, and the prior art cannot determine the input of the cognitive radar perception memory and cannot operate normally, and provides a clutter environment Cognitive Radar Target Tracking Method

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