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Weighted distance - vector method for positioning wireless sensor network

A wireless sensor, weighted distance technology, applied in radio wave measurement system, radio/induction link selection arrangement, positioning and other directions, can solve the problems of low accuracy and large positioning error, to improve accuracy and solve large positioning error , the effect of reducing the deviation

Inactive Publication Date: 2007-07-25
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problem of large positioning error and low precision of the existing distance vector positioning method without ranging, and provides a weighted distance vector positioning method of wireless sensor network to reduce positioning error and improve positioning accuracy

Method used

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  • Weighted distance - vector method for positioning wireless sensor network
  • Weighted distance - vector method for positioning wireless sensor network
  • Weighted distance - vector method for positioning wireless sensor network

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Embodiment Construction

[0023] FIG. 1 is a flowchart of a weighted distance vector positioning method for a wireless sensor network according to the present invention. As shown in Figure 1, the present invention includes: each anchor node in the wireless sensor network obtains other anchor node positions and the hop number information from other anchor nodes; information, estimate the average distance per hop; the unknown node obtains the number of hops away from each anchor node and the average distance per hop broadcast by each anchor node; the unknown node performs weighted processing on the average distance per hop obtained from each anchor node , to calculate the final average distance per hop of the unknown node; according to the final average distance per hop of the unknown node and the number of hops away from each anchor node, calculate the distance to each anchor node; according to the distance between the unknown node and each anchor node Calculate the distance between unknown node positio...

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Abstract

A network weight distance vector positioning method of radio transducer includes carrying out weight treatment on average each jump distance of each received anchor node based on DV-hop positioning means and considering estimated average each jump distance of multiple anchor nodes, calculating distance between unknown node and anchor node by utilizing final average each jump distance for effectively decreasing estimation deviation and for effectively raising the positioning accuracy of complete network.

Description

technical field [0001] The present invention relates to a positioning method in the field of wireless communication, in particular to a weighted distance vector positioning method for a wireless sensor network. Background technique [0002] In recent years, with the development of technologies such as micro-electro-mechanical systems (MEMS for short), integrated circuits, wireless communications, sensors, and digital electronics, the production of low-cost, low-power, and multi-functional miniature wireless sensors has become Possibly, wireless sensors have functions such as wireless communication, data collection and processing, and collaborative cooperation. [0003] A wireless sensor network (WSN for short) is a network structure formed by setting a large number of wireless sensors to a target area, and each wireless sensor is called a node in the WSN. The nodes of WSN can be specifically set or randomly distributed in the target area, for example: some areas where human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02G01S5/14H04Q7/38H04W64/00H04W84/18
Inventor 刘锋张学军张军张翰
Owner BEIHANG UNIV
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