Node positioning method and device

A node positioning and node technology, applied in the information field, can solve the problems of low node positioning result accuracy, not considering the earth's surface, etc., to achieve the effect of simple implementation and improved positioning accuracy

Inactive Publication Date: 2014-05-28
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

[0003] However, the traditional node positioning methods are all based on the two-dimensional coordinate system, that is, the positioning method based on the plane, whi

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  • Node positioning method and device

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[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0053] Among the traditional node positioning methods, the trilateral positioning method is more commonly used. This algorithm estimates the position of the unknown node by calculating the intersection point of the intersection circle and the centroid of the area composed of the intersection point. Specifically, the latitude and longitude coordinates of the three nodes with known latitude and longitude coordinates are respectively converted into two-dimensio...

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Abstract

The embodiment of the invention discloses a node positioning method and a node positioning device. The node positioning method comprises the steps of considering that the surface of the earth is a spherical surface, obtaining distances between three nodes with known longitude and latitude coordinates and a node to be positioned by virtue of a link quality indication value, converting the longitude and latitude coordinates of the three nodes with the known longitude and latitude coordinates into three-dimensional space coordinates, calculating a three-dimensional space coordinate of the node to be positioned according to the three-dimensional space coordinates, and converting the three-dimensional space coordinate of the node to be positioned into a longitude and latitude coordinate of the node to be positioned. Namely, the embodiment of the invention considers that the surface of the earth is the spherical surface in a positioning process, and the three-dimensional space coordinate of the node to be positioned is calculated in a three-dimensional space, so that the positioning precision of the node is improved; furthermore, the coordinate of the node to be positioned is determined in the three-dimensional space, so that the implementation is easy.

Description

technical field [0001] The present application relates to the field of information technology, and more specifically, to a node positioning method and device. Background technique [0002] The wireless sensor network is a network composed of sensor nodes integrating sensing units, information processing units, wireless communication units, etc. through self-organization, and collects the required physical information in real time by means of various integrated micro-sensors, such as Temperature, humidity, speed, direction, etc., and transmitted to the user terminal in the form of multi-hop relay. The location of nodes in wireless sensor networks plays an important role in the whole sensor network, and is an indispensable link in event observation, target tracking, network reconstruction and so on. [0003] However, the traditional node positioning methods are all based on the two-dimensional coordinate system, that is, the positioning method based on the plane, which does n...

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Application Information

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IPC IPC(8): H04W64/00H04W84/18
Inventor 马学彬沈延麒牛丽娜
Owner INNER MONGOLIA UNIVERSITY
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