Iterative filtering method for tracking before multiframe detection

Abstract

The invention provides an iterative filtering method for tracking before multiframe detection. A later target state can be estimated more precisely according to a short track obtained through tracking processing before detection, filtering processing is carried out on the target state, the precision of estimating the target state is improved, a target can be tracked in real time for a long time, and the complete track of the target is obtained. The target state is estimated iteratively, and overmuch memory space and the too large calculated amount are not introduced. According to the method, the precision of estimating the target state is improved, the target can be tracked in real time for a long time, the problem that missing inspection possibly happens to tracking before weak target detection with the low signal to noise ratio is effectively solved through track predication, and the continuity of the track is guaranteed.

Description

technical field [0001] The invention relates to radar data processing technology, in particular to the technical field of radar weak target tracking. Background technique [0002] The modern battlefield environment is becoming more and more complex, the reduction of target flying height and the increasing maturity of target stealth technology have challenged the detection performance of traditional radars. Improving the detection and tracking performance of radar for faint targets has become an extremely important issue, and has attracted more and more attention. [0003] Multi-frame tracking before detection technology is a technology for detecting and tracking weak targets in low signal-to-noise ratio environments. This technology uses multi-frame information for target detection at the same time, which improves the detection effect of weak targets. Different from traditional detection methods, pre-detection tracking does not announce the detection results in a single fra...

AI Technical Summary

Problems solved by technology

However, in order to ensure the requirements of detection performance and radar real-time display, these multi-frame pre-detection tracking processes can only obtain the short track of the target at a time

If too many frames are tracked before detection, a large number of random factors will be introduced, and the detection performance will be severely degraded

Moreover, the traditional radar data processing technology is all for processing the point track after single-frame detection, which is not suitable for the short track after the pre-detection tracking process, and cannot use the traditional tracking filtering method to estimate the real state of the target.

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