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Distributed wireless sensor network node positioning method

A wireless sensor and network node technology, applied in satellite radio beacon positioning system, network topology, wireless communication, etc., can solve the problem of low positioning accuracy and achieve simple results

Inactive Publication Date: 2012-11-07
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is very suitable for distributed execution in the network, but because it is based on the quadratic cone relaxation technology, the positioning accuracy is low

Method used

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  • Distributed wireless sensor network node positioning method
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  • Distributed wireless sensor network node positioning method

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Embodiment Construction

[0038] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0039] The implementation environment of this embodiment includes: a wireless sensor network composed of N nodes, wherein: m anchor nodes and n unknown nodes, the positions of the above nodes are represented by x i , i=1, 2,... N means; the measurement position of the anchor node is a i and the upper bound of the measurement error is δ: that is, ‖x i -a i ‖≤δ, i=1, 2,...m; the measurement distance of directly connected neighbor nodes i and j is d ij Indicates that ‖x i -x j ‖≈d ij .

[0040] This embodiment is specifically carried out through the following steps:

[0041] The first stage is the initializati...

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Abstract

The invention relates to a distributed wireless sensor network node positioning method which belongs to the technical field of wireless sensor networks. The method comprises the steps of network initialization, convex positioning and non-convex positioning. The method is suitable for positioning a static wireless sensing network, reduces the requirement on the network energy and the bandwidth, improves the positioning precision and the expandability and does not need the support of any routing protocols.

Description

technical field [0001] The present invention relates to a method in the technical field of wireless sensor networks, in particular to a distributed wireless sensor network node positioning method. Background technique [0002] Wireless sensor network node positioning refers to determining the physical coordinates of unknown position nodes based on some known position estimation nodes (usually called anchor nodes) and ranging information or connectivity information between nodes. Node location technology is one of the core technologies of wireless sensor networks. In various applications of sensor networks, the location of nodes is very important. Without location information, most of the collected data lose their practical significance. Due to the importance of location information, after the network is deployed, the nodes should be able to determine their own location independently. Due to the limitations of resources, costs, and application environments, it is unrealistic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W84/18G01S19/02
Inventor 史清江何晨蒋铃鸽
Owner SHANGHAI JIAOTONG UNIV