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Fan-sweeping radar multi-target continuous tracking method

A multi-target and radar technology, applied in the field of target detection, can solve the problems such as the inability to realize sector-scan radar, achieve low-latency tracking, reduce tracking delay, and improve accuracy

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

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the prior art cannot realize low-latency tracking of sector-scan radar

Method used

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Embodiment Construction

[0077] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0078] As mentioned earlier, see figure 1 , using sector-scan radar for tracking, for target A, if the antenna is at T 1 Scan clockwise to it at all times, and the end time of the current scan cycle is T end1 , the tracking delay is delay a =T end1 -T 1 ; For target B, if the antenna is at T 2 Scan it counterclockwise at any time, and the end time...

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Abstract

The invention relates to a fan-sweeping radar multi-target continuous tracking method, wherein the method comprises the steps: for each received observation, taking the observation which is in the previous scanning period and is not utilized by an existing track to form a first preselected observation set; establishing a track according to the first preselected observation set, carrying out filtering in combination with the state of the track, and calculating prediction estimation of the track in the next scanning period and a corresponding gate time interval; determining an acquisition time interval according to the gate time interval for each existing track and the end moment of the gate time interval corresponding to the current track in each scanning period, obtaining 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 preselected observation set, carrying out filtering in combination with the state of the track, and calculating prediction estimation of the track in the next scanning period and a corresponding gate time interval. According to the invention, the low-delay tracking of the fan-sweeping radar can be realized.

Description

technical field [0001] The invention relates to the technical field of target detection, in particular to a multi-target continuous tracking method of a sector-scan radar, computer equipment and a computer-readable storage medium. Background technique [0002] Sector-scan radar uses the reciprocating rotation of the antenna in the sector-shaped area to change the direction of the antenna beam, thereby scanning the surveillance area. After a target is scanned, the antenna returns observations of the target to the radar, which uses the received observations to track the target. In sector-scan radar, the antenna continuously sends back the observation information of the target within a scanning period, but the current traditional tracking method waits until the end of a scanning period before processing the observation information. There is a delay between tracking and detection, which affects the accuracy of tracking. Contents of the invention [0003] (1) Technical proble...

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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