Distributed multi-target tracking method based on multi-source clusters

A multi-target tracking and distributed technology, applied in the direction of reflection/re-radiation of radio waves, utilization of re-radiation, measurement devices, etc., can solve the problems of information loss, lack of utilization of correlation between measurements, etc.

Active Publication Date: 2019-01-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Secondly, this method only uses the correlation between tracks, but the correlation between measurements is not utilized, so there will be information loss

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  • Distributed multi-target tracking method based on multi-source clusters
  • Distributed multi-target tracking method based on multi-source clusters
  • Distributed multi-target tracking method based on multi-source clusters

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[0072] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in combination with simulation and comparative experiments. "Mean OSPA" in the figure represents the average optimal sub-mode assignment distance.

[0073] Simulation scenario: Assuming that the observation area of ​​the distributed networked radar is 1000m×1000m, the parameters of each radar are the same and all targets are within the observation area of ​​the radar, and the scanning time interval T s =1s, process noise spectral density q s =0.001, target detection probability P d =0.9, false alarm probability P f =10 -4 , the clutter rate is 10, the total observation time T=30s, the standard deviation of the observation noise on the x-axis The standard deviation of the observation noise on the y-axis The target's minimum velocity v min =15, the maximum speed v max =30, the associatio...

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Abstract

The invention discloses a distributed multi-target tracking method based on multi-source clusters aiming at solving the problems that an existing traditional distributed multi-target tracking method only utilizes the correlation between tracks and does not make full use of the correlation between measurement, consequently the information loss is caused, and the high computational complexity is caused by calculation of the correlation between the tracks. The distributed multi-target tracking method comprises the steps that firstly, data, received by all radars, at each moment are clustered; then the centers of all the clusters are calculated to serve as estimation of the positions of all targets at the moment; and finally a joint probabilistic data association algorithm is simplified basedon the nearest neighbor, multiple targets are tracked through a single station radar multi-target tracking method, and thus a target track is obtained. According to the distributed multi-target tracking method, the problems that in practical application, the information loss and the high computational complexity exist in traditional distributed multi-target tracking are effectively solved, multi-target tracking performance is improved, and a near target at a short range can also be effectively tracked.

Description

technical field [0001] The invention belongs to the field of through-wall radar imaging, in particular to a radar multi-target tracking technology. Background technique [0002] With the development of stealth technology and anti-reconnaissance technology, the traditional single-station radar multi-target tracking technology can no longer meet the growing military needs, and the multi-target tracking technology based on networked radar is the future development direction of multi-target tracking technology. According to the data processing mode of the networked radar, the networked radar can be divided into three categories: centralized, distributed and hybrid. The present invention mainly focuses on the problem of multi-target tracking in distributed networked radars. [0003] The traditional multi-target tracking based on distributed networked radars first uses each radar to track multiple targets independently, then calculates the correlation between the target tracks fr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72
CPCG01S13/726
Inventor 张天贤时巧葛萌萌王远航韩毅徐龙潇孔令讲杨晓波崔国龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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