Multi-target TBD (track-before-detect) method for parallel computation

A front-tracking, multi-target technology, applied in the direction of measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve the problem of long computing time, poor tracking performance, and poor tracking of cross-running target trajectories. Detect problems such as tracking to achieve the effect of removing false tracks

CN105866769AActive Publication Date: 2016-08-17HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-08-17

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Abstract

The invention relates to a multi-target TBD (track-before-detect) method for parallel computation. The method comprises steps as follows: step A, radar echo data are acquired; step B, accumulation of a value function is performed in each pre-determined direction, and tracks of targets in the pre-determined direction are determined with a track backtracking method according to accumulation of the value function; step C, track fusion is performed, and tracks sought in each pre-determined direction are fused together; step D, a complete track is output. According to embodiments of the method, the track detection performance of crisscross motion targets is improved, and the computation time is shortened.
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Description

technical field

[0001] The invention belongs to the technical field of radar data processing and relates to target detection and tracking. Background technique

[0002] The diversity of targets and the complexity of the environment make the detection capability of modern radars face huge challenges, and the problem of weak target detection is one of them. The development of stealth technology has reduced the RCS (radar reflection cross section) of the aircraft by one to two orders of magnitude, the target reflection echo has been greatly weakened, and the radar detection power has been significantly reduced, resulting in a large area of ​​holes in the air defense network, which has brought great harm to national security. threaten. On the other hand, the flight speed of the target has been greatly increased, which has sharply reduced the radar warning time. For this reason, radars are required to detect distant targets with weaker echoes. In addition, the target signal-to...

Examples

Embodiment approach

[0065] According to some embodiments of the present invention, the present invention has the following characteristics:

[0066] 1. Multi-frame track accumulation of radar echo data from different directions improves the detection and tracking of cross-moving targets. Since the accumulation has a direction, the value function accumulation of moving targets in this accumulation direction will not be affected by targets in other directions influences;

[0067] 2. Put the accumulation operations in different directions in different operation cores, and the operations of these cores can be performed in parallel. Since the operations are distributed to different operation cores, the operation time is greatly shortened.