A Tracking Method for Interlaced and Overlapped Targets in Sea Radar System

Abstract

The invention discloses an interlaced and overlapped object tracking method based on situation analysis and feature extraction technologies in a sea radar tracking system. The method is characterized in that situation information around a target ship is established, and character information of other ships around the target ship is simultaneously grasped; whether the target ship is overlapped with other ships (which cannot be distinguished by radar echoes) is judged according to the situation information, merged situation is established for an overlapped target track, character information of the ship merged with the target ship is recorded, and then the merged objects are continuously tracked; and when the merged objects obtained by situation analysis can be distinguished by the radar echoes, the merged objects are divided according to the character information, and the tracking process of the overlapped objects in a complex environment is completed. According to the invention, the situation analysis and character extraction methods are utilized to solve the problem that radar echoes overlap and normal tracking is unavailable, the tracking capability over objects in complex environments such as meeting and interlacing environments is substantially improved.

Description

technical field [0001] The invention belongs to radar target tracking technology, in particular to an interlaced overlapping target tracking method based on situation analysis and feature extraction technology in a sea radar tracking system. Background technique [0002] Radar target tracking technology is widely used in military and civilian fields. Typical application examples include civilian maritime surveillance (MS), port vessel traffic management (VTS), air traffic control (ATC) and military maritime security, Shipboard radar system, air defense system, fire control and interception guidance, etc. The input of the radar tracking system is the point track information formed after the front-end radar signal processing, that is, the point track is the object of data processing of the tracking system, and the output of the tracking system is the track formed after the data processing of the target. Generally speaking, the radar tracking target is mainly composed of the f...

AI Technical Summary

Problems solved by technology

However, in the problems faced in the process of overlapping sea targets, there is no clear correlation between the point track and the track, and the real point track of the target does not exist. The above conventional correlation algorithm cannot solve this kind of point and track mismatch problem well.

Among them, the NNSF, PDA, and JPDA algorithms will lose track due to the maneuvering of the target during the overlapping process. Although the MHT algorithm considers the situation of all the surrounding points, it cannot handle the correspondence between the target and the batch number after the target is separated. relationship, it is easy to change batches, and the amount of calculation is huge

Images