Variation-based multi-radar fusion track state estimation method

A state estimation, multi-radar technology, applied in the direction of reflection/re-radiation of radio waves, complex mathematical operations, utilization of re-radiation, etc., can solve the problems of tracking failure, affecting track quality, bulging, etc. Track quality, the effect of improving accuracy

Pending Publication Date: 2020-09-18
STRATEGIC EARLY WARNING RES INST OF THE PEOPLES LIBERATION ARMY AIR FORCE RES INST
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to provide a multi-radar fusion track state estimation method based on variation, so as to overcome that the existing radar information processing system o

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  • Variation-based multi-radar fusion track state estimation method
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  • Variation-based multi-radar fusion track state estimation method

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[0041] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] The present invention proposes a multi-radar fusion track state estimation method based on variation, comprising the following steps:

[0043] Step 1: Create observation data queue

[0044] For each batch of fused tracks, a dynamically updated observation queue is created at the beginning of the batch to save the observation movement records of each original radar within the latest N seconds. N is generally 20-60;

[0045] Step 2: Add real-time observation data to the queue

[0046] Once the position of the corresponding original track is updated, a record is added to the queue (t k,1 ,t k,2 , d k,x , d k,y , d k,z ), where k>0 represents the index number in its queue, t k,2 , t k,1 are the recording tim...

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Abstract

The invention relates to a variation-based multi-radar fusion track state estimation method, belongs to the field of multi-sensor target tracking and data fusion, and aims to overcome the defect thata radar information processing system often swings back and forth among a plurality of original tracks during track fusion to form a saw-tooth shape which influences of track quality, and the solve the problem that turning bulging and even tracking failure easily occur in a conventional method. Observation information of multiple radars is managed in a unified mode, a variation model containing atarget motion speed transformation curve is constructed, a rapid solving mode of the variation model is given, the solved motion speed curve is used for track extrapolation of all the observation radars, and finally a target state estimation value is estimated and updated. According to the method, correlation of observation information is considered to the greatest extent, the adverse effects of track relative deviation and sudden maneuvering of the target on target estimation are reduced, the target motion speed and the fusion position estimation precision are improved, the track quality is improved, and reliable tracking of the target is obtained.

Description

technical field [0001] The invention belongs to the technical field of multi-sensor target tracking and data fusion, and in particular relates to a variation-based multi-radar fusion track state estimation method. Background technique [0002] At present, radar information processing systems at all levels generally adopt a distributed processing architecture, that is, each radar equipment performs target detection and track tracking separately, generates a single radar original track, and then sends it to the upper-level fusion processing center, and the center completes the processing of each original track. Association and fusion, and finally generate the network fusion track. In this architecture, the upper and lower systems are loosely coupled, and the communication volume is small, which is convenient for engineering implementation. [0003] Due to different detection periods and inconsistent start-up times, it is difficult to synchronize the detection time of each rad...

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Application Information

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IPC IPC(8): G01S13/58G01S13/87G01S13/72G06F17/10
CPCG01S13/58G01S13/87G01S13/723G06F17/10
Inventor 张明齐崇英王树刚王艺刘冰吴凤香郑虹
Owner STRATEGIC EARLY WARNING RES INST OF THE PEOPLES LIBERATION ARMY AIR FORCE RES INST
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