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Wireless positioning method based on Tikhonov regularization

A wireless positioning and regular technology, applied in the field of wireless positioning, can solve problems such as uneven deployment and irregular node distribution, and achieve the effects of high positioning accuracy, easy parameter setting, and low computational complexity

Active Publication Date: 2017-09-08
南京思安智能科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a wireless positioning method based on Tikhonov regularization to solve the problem that the multi-hop non-ranging wireless positioning algorithm in the prior art is easily affected by anisotropic network factors such as irregular node distribution and uneven deployment.

Method used

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  • Wireless positioning method based on Tikhonov regularization
  • Wireless positioning method based on Tikhonov regularization

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Embodiment

[0054] Embodiment Firstly, according to the hop count and distance between reference nodes, Tikhonov regularization is used to construct a hop count-distance mapping model; and then the hop count from an unknown node to a reference node is used to obtain the corresponding distance under the guidance of the mapping model ; Finally, the estimated position of the unknown node is obtained by the trilateration method. Both theoretical analysis and simulation experiments show that compared with the classical method of the same type, the regularization positioning method based on Tikhonov can more effectively avoid the problem of network anisotropy and reference node collinearity in the calculation process, and involves fewer parameters and higher positioning accuracy. High, fast computing speed, strong ability to adapt to the environment.

[0055] The positioning scenario statement of the WNLT positioning algorithm is as follows:

[0056] Without loss of generality, there are n sen...

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Abstract

The invention provides a wireless positioning method based on Tikhonov regularization. The method comprises the following steps of firstly, adopting the Tikhonov regularization to construct a hop-distance mapping module according to hops and distances between reference nodes; secondly, utilizing the hops between an unknown node and the reference nodes to obtain corresponding distances under the guidance of the mapping module; and lastly, obtaining an estimated position of the unknown node through a three-side method. Theoretic analysis and simulation experiments show that compared with the same type of typical method, the positioning method based on the Tikhonov regularization is capable of effectively avoiding the problems of network anisotropy and collinearity of the reference nodes in a computing process and has few involved parameters, high positional accuracy, fast computation speed and strong environmental adaptability.

Description

technical field [0001] The invention relates to a wireless positioning method based on Tikhonov regularization. Background technique [0002] With the miniaturization of microelectronic devices and the popularization of wireless networks, more and more users can conveniently carry portable intelligent mobile terminal equipment with them. At the same time, people's lives are becoming more and more dependent on mobile devices. Among the services provided by many mobile devices, location service information is generally considered to be the premise of other information services. The most convenient way to obtain location information is to install a satellite positioning system on the mobile terminal, such as the Global Positioning System (GPS) or the Beidou System (BDS). The satellite positioning system communicates directly with the receiving terminal through the satellite to build a one-hop positioning system, but the satellite positioning system is expensive, consumes a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/08H04W28/02H04W40/20
CPCH04W4/023H04W4/025H04W4/08H04W28/0263H04W40/20
Inventor 施卫娟严筱永
Owner 南京思安智能科技有限公司
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