Target extraction and aggregation method based on ground surveillance radar system

Abstract

The invention discloses a target extraction and aggregation method based on a ground surveillance radar system. The method comprises a step of performing false dot filtering processing on target echoinformation, a step of blurring the filtered target echo information to form a two-dimensional image, a step of performing target edge extraction on the two-dimensional image, a step of performing ground object target filtering processing after the target edge extraction, a step of sequentially carrying out velocity aggregation and distance aggregation on target echo information belonging to the same target after the ground object target filtering processing, and a step of performing azimuth aggregation on the target echo information which is subjected to distance aggregation to obtain targetecho information and target parameters belonging to the same target after the azimuth aggregation. According to the invention, the risk that the same target is split into multiple targets when the target extraction is performed is reduced, the risk that targets of different speeds are merged into the same target when the targets are aggregated is reduced, the integrity and accuracy of the target extraction and the accuracy of the target aggregation are improved, and a reliable basis is provided for subsequent track processing.

Description

technical field [0001] The invention relates to the technical field of real-time target extraction and agglomeration of a ground surveillance radar system, in particular to a method for target extraction and agglomeration based on a ground surveillance radar system. Background technique [0002] The ground surveillance radar system is a short-distance detection system that adopts radar detection and photoelectric identification and tracking. It can detect, track and manage vehicles and pedestrians on the ground, ships on the water surface, and aerodynamic aircraft in the air under the background of ground objects. . [0003] Target extraction is to extract the target echo information belonging to the same target, and estimate the target parameters according to the target echo information, so as to achieve the purpose of improving the accuracy of point track aggregation and improving the quality of track tracking. Target agglomeration is to combine the target echo informatio...

AI Technical Summary

Problems solved by technology

[0004] The traditional target extraction method using graphics directly extracts image edges without considering the discontinuous characteristics of radar detection targets, which reduces the integrity of target extraction and causes the same target to split into multiple targets during target extraction; and The target echo information belonging to the same target is not filtered out. In the subsequent condensing process, the amplitude value of the target on the zero channel will lead to an estimation deviation of the target parameters.

The traditional target aggregation method does not consider the speed of the target, which reduces the speed resolution ability of the target, resulting in merging targets with different speeds into the same target when the target is condensed

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