Global target tracking method in navigation radar system

Abstract

The invention discloses a global target tracking method in a navigation radar system. The method comprises the following steps of dividing a topology grid; abstracting the tracking process of a radartarget to be a task; establishing a thread pool; establishing a sector driving mechanism; carrying out point trace filling; carrying out sector crossing judgment; if a sector is not crossed, repeatedly executing point trace filling; if the sector is crossed, according to the driving mechanism, starting track updating, track establishment and data cleaning in each grid in the corresponding sector;and repeatedly carrying out point trace filling and sector crossing judgment, and realizing global target tracking. In the invention, the continuous starting and tracking of a global target in the navigation radar system can be realized; during a tracking process, association particularity between a track and point trace data is integrally considered, which means that a grid crossing association condition exists; optimal association processing of all targets in an entire radar scanning range is guaranteed to be realized; and under the condition of realizing high processing efficiency, a wholeframe can effectively improve the tracking performance of a radar to low-speed dense targets.

Description

technical field [0001] The invention relates to the technical field of radar target tracking, in particular to a method for global target tracking in a navigation radar system. Background technique [0002] In the VTS system (Vessel Traffic Management System), the navigation radar is used to track the surface target and continuously provide the system with target dynamic information. [0003] Track point-track correlation is an important part of radar target tracking. The correlation results are used for filtering processing. The accuracy of the correlation results directly affects the accuracy of the filtering results, and ultimately affects the accuracy of the heading and speed. Due to the characteristics of radar echoes, the parameters such as the time, location, and size of the point track are uncertain, and they usually shake around the predetermined position, so the process of linking the track to the point track has great ambiguity. In inland waters, ships are dense ...

AI Technical Summary

Problems solved by technology

[0005] At the same time, tracking the targets in the entire scanning area requires a large amount of calculation. Considering that the subsequent algorithm improvement will also increase the complexity and calculation amount, it is necessary to design an efficient data management strategy that can support all target tracking. The magnitude of calculations processed, while the framework itself does not cause too much additional overhead, leaving sufficient performance margin for the calculation of target tracking

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