A Fast Localization Method of Space Multi-Sensors for Network

A multi-sensor and positioning method technology, applied in the field of target detection, can solve problems such as no solution of spherical intersection, affecting positioning accuracy, ranging data error, etc., and achieve the effect of simple calculation, high precision, fast and accurate positioning

Active Publication Date: 2017-08-01
UNIT 63892 OF PLA
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  • Application Information

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Problems solved by technology

However, in actual situations, due to the influence of system equipment and environmental interference, the distance measurement data has errors, resulting in no solution for the spherical intersection point, which affects the positioning accuracy.
In order to improve the positioning accuracy, the method of increasing the number of detection nodes (increasing the coverage of the network) is usually adopted, but the increase in the number of detection nodes will increase the hardware cost and the time complexity of the positioning algorithm, which does not take advantage of the actual engineering application

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  • A Fast Localization Method of Space Multi-Sensors for Network
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  • A Fast Localization Method of Space Multi-Sensors for Network

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[0035] like figure 1 , 2 , 3, 4, and 5, a space multi-sensor rapid positioning method for the network, according to the coordinate position and ranging results of each detection node in the multi-sensor network, select the smallest cube area that can cover all target point positions, And perform rasterization; and use each grid center point as the target point to be selected, select the appropriate target point to be selected as the initial target approximate point through the constraint rules, and use this point as the center point coordinates to reselect the cube coverage area, iteratively calculate the coordinates of the target approximate position point until the side length of the cube coverage area meets the accuracy requirements, and the target approximate position point obtained at this time is the target position.

[0036] figure 1Shown is a schematic diagram of cube coverage area selection, assuming that there are four detection nodes, respectively D 1 (x d1 ,y ...

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Abstract

The invention relates to the technical field of target detection, and discloses a spatial multi-sensor quick positioning method for a network. The method comprises the steps: selecting a minimum cubic region capable of covering all target points according to the coordinates and distance measurement results of all detection nodes in a multi-sensor network, and carrying out rasterization; enabling the center point of each grid to serve as a to-be-selected target point, selecting a proper to-be-selected target point as an initial target approximate position point through a constraint rule, taking the coordinates of the proper to-be-selected target point as the coordinates of the center point, selecting a cubic coverage region again, carrying out the iterative computation of the target approximate position point till the side length of the cubic coverage region meets the requirements of precisions, and taking the target approximate position point as the target position at the moment. The method can be used for various types of sensor devices based on distance, and completes the quick and precise positioning of a spatial target. Moreover, the method is simple and is high in calculation precision.

Description

technical field [0001] The invention relates to the technical field of target detection, in particular to a space multi-sensor rapid positioning method for a network. Background technique [0002] A multi-sensor network refers to a network system composed of multiple sensors deployed in a specific area called network nodes according to certain coverage requirements. With the rapid development of wireless mobile communication and mobile terminal technology, multi-sensor network has set off an upsurge of research in the civilian field. [0003] The working principle of the multi-sensor network applied to target positioning is to make full use of the sensor resources on multiple platforms, fuse the information data observed by multiple platforms, remove redundant information, and obtain a consistent understanding of the measured target. According to the different ways of sensing information, the main means to achieve target positioning include ranging positioning, direction fi...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01S5/12G01S5/00
CPCG01S5/0036G01S5/12
Inventor石川张杨余科洋徐忠富朱培栋刘文甫王利华薛芳侠常文泰邬雨蒙何荣茂贺正求张雷刚
OwnerUNIT 63892 OF PLA