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Parallel locating correction method of a large number of discrete nodes

A technology of discrete nodes and positioning methods, applied in electrical components, wireless communication and other directions, can solve problems such as positioning errors

Inactive Publication Date: 2012-01-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The limitation of this cake method is that when the number of layers increases, because the positioning of the three key nodes of the next layer contains a positioning error in this layer

Method used

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  • Parallel locating correction method of a large number of discrete nodes
  • Parallel locating correction method of a large number of discrete nodes
  • Parallel locating correction method of a large number of discrete nodes

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Experimental program
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Embodiment Construction

[0078] Below in conjunction with accompanying drawing, the present invention will be further described, and the inventive method comprises the following steps:

[0079] 1) Each discrete node in a large number of discrete nodes is assigned a unique self-number, and the total number of discrete nodes participating in the positioning is counted;

[0080] A large number of discrete nodes organize a wireless network. When the wireless network is established, the number of discrete nodes is counted, and each discrete node is assigned a unique number in the network.

[0081] 2) Each discrete node calculates its own positioning group number in the first-level positioning process according to its own number and the total points of the discrete nodes participating in the positioning;

[0082] Such as figure 1 , determine the total number of positioning layers n according to the chart of the total points of discrete nodes participating in the positioning, and then according to the form...

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Abstract

The invention discloses a parallel locating correction method of a large number of discrete nodes. The method comprises the following steps: (1) distributing a number for each discrete node to form an original discrete node set; (2) extracting two riveted nodes from each locating group of the original discrete node set during the first-layer locating process so as to form a new discrete node set; (3) repeating step (2) until the finally formed discrete node set only contains one-layer locating process; (4) independently locating all the discrete node sets and integrating all the discrete node sets into a relative coordinate system; (5) correcting cumulative errors of the locating group of the formerly formed discrete node set by the newly formed discrete node set; and (6) repeating step (5) until the cumulative errors of all the locating groups of the original discrete node set during the first-layer locating process are completely corrected. The correction method has the advantages of balanced operating performance, low time complexity, good robustness and capability of completely correcting the cumulative errors caused by layered localization.

Description

technical field [0001] The invention relates to the field of regional relative positioning, and a key correction of a method for positioning without a reference node in a region containing a large number of discrete points, and also relates to a parallel method for positioning and correction based on distance measurement information. Background technique [0002] The regional non-reference node positioning of a large number of discrete nodes is widely used, and plays a pivotal role in large-scale wireless sensor positioning and military, medical, port warehouse logistics management, urban traffic monitoring, geological and water conservancy exploration, environmental monitoring and other fields. [0003] Relying only on the time-division ranging of each discrete node for relative positioning in a large-scale area can no longer meet the requirements of relevant applications for response time. The traditional cellular method also has large errors that cannot be eliminated ...

Claims

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Application Information

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IPC IPC(8): H04W64/00
Inventor 徐杨郭翔成东峻俞靖黎建辉王楠任阳
Owner ZHEJIANG UNIV
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