TWS radar multi-target continuous tracking method

A multi-target and radar technology, applied in the field of target detection, to achieve the effect of reducing tracking delay, improving accuracy, and improving track maintenance ability

Active Publication Date: 2021-09-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the existing technology cannot realize TWS radar low-latency tracking and cannot guarantee the tracking stability when the target crosses the scanning boundary

Method used

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  • TWS radar multi-target continuous tracking method

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Embodiment Construction

[0086] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are protected by the present invention. scope.

[0087] As mentioned before, see figure 1 , use TWS radar for tracking, set the radar antenna to rotate counterclockwise, there are two targets in space, and the track to track them is T 1 (k 1 ) and T 2 (k 2 ), if the two tracks are respectively at t 1 and t 2 Time is scanned by the antenna. Subsequently, the antenna continues to scan, at...

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Abstract

The invention relates to a TWS radar multi-target continuous tracking method, wherein the method comprises the steps: for each observation received by a TWS radar, selecting observations acquired before the current moment to form a first preselected observation set; establishing a track according to the first preselected observation set, filtering in combination with the state of a track, and calculating prediction estimation of the next updated track and a corresponding gate time interval; for each existing track, determining an acquisition time interval according to a gate time interval at the end moment of the gate time interval corresponding to the current track in each update, acquiring observation in the acquisition time interval, and forming a second preselected observation set; and at the end moment of the acquisition time interval, updating the state of the current track by using the second pre-selected observation set, filtering in combination with the state of the track, and calculating the prediction estimation of the next updated track and the corresponding gate time interval. According to the invention, TWS radar low-delay tracking can be realized, and the problem of track fracture caused by boundary scanning is solved.

Description

technical field [0001] The present invention relates to the technical field of target detection, in particular to a TWS radar multi-target continuous tracking method, computer equipment and computer-readable storage medium. Background technique [0002] Most tracking while scanning radars (TWS radars) are mechanical scanning radars, which rely on the mechanical rotation of the antenna to change the direction of the antenna beam to scan the surveillance area. After scanning the target, the antenna returns observations of the target to the radar, and the radar uses the received observations to track the target. For the circular scanning TWS radar, when the target is at different azimuth positions in the surveillance area, the time when the antenna scans it is also different, but in the same scanning period, the status updates of these targets are carried out simultaneously, which results in It is observed that there is a certain delay between processing observations, that is,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72G01S13/00
CPCG01S13/726G01S13/006
Inventor 周共健桑航
Owner HARBIN INST OF TECH
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