Method and system for node location in wireless communication network based on target tracking

Abstract

The present invention provides a node positioning method in a wireless communication network based on target tracking, comprising the following steps: determining the estimated position of the target according to the geometric relationship between the target and the node; sorting the nodes from strong to weak according to the strength of the received target signal , use the target distributed coordination method to realize the target tracking; determine the selected node according to the relationship between the node position coordinates and the estimated trajectory; establish the selected node positioning model and the wireless signal propagation path loss vector model, and the selected node receives the wireless signal of the beacon node Radio frequency signal data, according to the radio frequency signal transmission model of establishment, output the distance parameter between the target and the beacon node; Carry out the coordinate calculation of the selected node according to the distance parameter between the target and the beacon node, complete positioning; The node positioning method in the wireless communication network based on target tracking, while ensuring accurate positioning, reduces system energy consumption and prolongs network life.

Description

technical field [0001] The invention relates to the field of wireless communication networks, in particular to a method and system for locating nodes in a wireless communication network based on target tracking. Background technique [0002] With the rapid development of wireless communication technology, MEMS and sensing technology, the application fields of wireless sensor network have become more and more extensive. The sensor network is usually composed of small and cheap sensor nodes, which have the ability of information collection, processing, storage and forwarding. Wireless sensor networks can be applied in environmental monitoring, battlefield surveillance and condition maintenance, etc., and in many applications, node location and tracking has always been the focus of wireless sensor network application research. How to improve the positioning and tracking accuracy of mobile nodes and improve the energy efficiency of wireless sensor networks is the key technology...

AI Technical Summary

Problems solved by technology

[0004] However, based on radar and sensor networks at this stage, people have proposed many effective target positioning and tracking algorithms, but this scenario requires the target to be under the monitoring of the sensing device at all times. This condition makes the sensing device sparse or damaged. The accuracy of location tracking is greatly reduced

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