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An Anchor-Free Localization Method Based on Jump Quantization and Mass Spring Model

A technology of a mass point spring model and a positioning method, which is applied in wireless communication, electrical components and other directions to achieve the effect of strong robustness and high positioning accuracy

Active Publication Date: 2017-07-28
SYSU CMU SHUNDE INT JOINT RES INST +1
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the existing positioning methods, and provide a non-anchor point positioning method based on jump quantization and mass spring model. The present invention not only effectively solves the problems of the AFL method, but also improves positioning. The convergence speed and robustness of the method improve the positioning accuracy at the same time

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  • An Anchor-Free Localization Method Based on Jump Quantization and Mass Spring Model
  • An Anchor-Free Localization Method Based on Jump Quantization and Mass Spring Model
  • An Anchor-Free Localization Method Based on Jump Quantization and Mass Spring Model

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[0040] The present invention will be further described below in conjunction with the accompanying drawings, so as to further explain the technical features and advantages of the method of the present invention. However, the embodiments of the present invention are not limited thereto.

[0041] The present invention provides a high-precision anchor-free positioning method, and the specific implementation steps are as follows:

[0042] 1. Initialize the network

[0043] Suppose the global network has N sensor nodes, each sensor node has its own unique ID, all sensor nodes have the same communication range, and its maximum communication radius is R. The distance measurement information can be obtained between the sensing nodes through ranging technology (ranging technology can use received signal strength indication (RSSI), time difference of arrival (TDOA), time of arrival (TOA), angle of arrival (AOA), etc.). Each sensor node sends location information, ID information and mea...

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Abstract

The invention relates to the technical field of node positioning in wireless sensor networks, in particular to an anchor-free positioning method based on hop quantification and a mass-spring model. According to the positioning method, a coordinate system with a smaller error is built by the aid of a hop quantification method. Measured distance information is sufficiently used for quantizing the communication radius lengths of sensing nodes into a plurality of hops. The invention further provides an AMSO (adaptive mass-spring optimization) method based on the mass-spring model. The positions of a center node and all neighbor nodes are adjusted by the aid of the AMSO method, the positions of the sensing nodes are optimized by AMSO, and sensing node coordinates are prevented from local optimum in iterative optimization. The positioning method has the advantages of high positioning accuracy, robustness and convergence speed.

Description

technical field [0001] The invention relates to the technical field of node location in wireless sensor networks, and more particularly, to an anchor-free location method based on hop quantization and mass spring model. Background technique [0002] In wireless sensor networks, how to locate wireless nodes quickly and accurately is a hot issue in recent years. In many applications, the location information of sensor nodes plays an important role in wireless sensor networks, because sensory data without location information is meaningless. At present, most wireless node positioning methods belong to anchor-based positioning methods, and there are few researches on anchor-free positioning methods. Because in some special occasions, the location information of all sensor nodes in the sensor network cannot be obtained in advance, so in this case, the anchor-free positioning method is very important. [0003] Anchor-free positioning methods are mainly divided into centralized p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/24H04W64/00
Inventor 黄以华赵汝威
Owner SYSU CMU SHUNDE INT JOINT RES INST
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