Node positioning method and node positioning system

A node positioning and node technology, which is applied in the field of communication, can solve the problems of large environmental impact, obstacles to application and promotion, and high cost of GPS signal receiving devices, and achieves the effect of improving accuracy and precision.

Inactive Publication Date: 2018-05-22
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology

[0003] In most outdoor environment applications, nodes collect information randomly, and the coordinates of nodes have great uncertainty; while in indoor environment applications, although GPS can be installe

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  • Node positioning method and node positioning system
  • Node positioning method and node positioning system
  • Node positioning method and node positioning system

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Embodiment Construction

[0063]In order to enable those skilled in the art to better understand the technical solution of the present invention, the node positioning method and the corresponding node positioning system of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] The technical idea of ​​the present invention is that, when it is determined that there are anchor nodes around the node to be measured, at least three anchor nodes around the node to be measured are used to locate another anchor node, and the estimated coordinate value of the anchor node is obtained. At this time, The node to be measured can be treated equally with the anchor node to obtain the estimated coordinate value. Since the anchor node has been confirmed to have accurate position coordinates, and then compare the estimated coordinate value of the anchor node with the precise position to obtain the positioning system error, and use th...

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Abstract

The invention belongs to the technical field of communication and in particular relates to a node positioning method and a corresponding node positioning system. The node positioning method comprisesthe following steps: initializing a node and screening a node to be detected, which has at least four anchor nodes at the periphery; optimizing a weight factor of a positioning coordinate; calculatingan estimated coordinate value of the node to be detected according to the optimized weight factor of the positioning coordinate; selecting four nodes which have the closest distance from the node tobe detected as revised anchor nodes; calculating measured coordinate values of the revised anchor nodes according to the optimized weight factor of the positioning coordinate; calculating a positioning mean value error according to the measured coordinate values of the anchor nodes; correcting the estimated coordinate value of the node to be detected according to the positioning mean value error and calculating the position of the node to be detected. According to the node positioning method and system, provided by the invention, a more accurate position coordinate is obtained through a mannerof optimizing the weight factor of the positioning coordinate and carrying out positioning error compensation, so that the node positioning precision can be effectively improved and the node positioning precision can be improved to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a node positioning method and a corresponding node positioning system. Background technique [0002] With the development of Internet of Things technology, there are more and more occasions and demands for sensor positioning. If the specific location information of the nodes is lacking, the relevant data information may not be used correctly. For example, in environmental monitoring, accurately locating forest temperature is a prerequisite for fire prevention. Obtaining accurate location information of sensors is a prerequisite for the application of Internet of Things technology. [0003] In most outdoor environment applications, nodes collect information randomly, and the coordinates of nodes have great uncertainty; while in indoor environment applications, although GPS can be installed on sensors to obtain location information, GPS The cost of the signal r...

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Application Information

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IPC IPC(8): G01S5/00
CPCG01S5/00
Inventor 程刚赵文东王源野
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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