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DV-hop visible light indoor positioning method based on fruit fly correction

An indoor positioning and dv-hop technology, applied in location information-based services, specific environment-based services, positioning, etc., can solve problems such as positioning errors and lower positioning accuracy

Active Publication Date: 2020-01-10
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology

[0003] At present, the existing research on visible light positioning algorithms is focused on ranging methods, which are easily affected by multipath effects and LED receiving angles, thus reducing positioning accuracy.
In the DV-hop positioning algorithm, the method of using the estimated average hop distance between the anchor node and the unknown node to replace its actual distance will bring inevitable errors to the positioning

Method used

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  • DV-hop visible light indoor positioning method based on fruit fly correction
  • DV-hop visible light indoor positioning method based on fruit fly correction
  • DV-hop visible light indoor positioning method based on fruit fly correction

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] figure 1 It is a schematic diagram of the operation flow of the present invention. First, the anchor node broadcasts packet information including its own location and the minimum hop count. Then, use the fruit fly optimization algorithm to solve the average distance per hop of the best anchor node. The unknown node is weighted to process the average distance per hop, the distance between the unknown node and the anchor node is calculated, and finally the maximum likelihood estimation algorithm is used to estimate its own coordinate position.

[0039] figure 1 A schematic diagram of the operation process of the method of the present invention is shown, wherein the specific steps are as follows:

[0040] 1. Randomly distribute 200 nodes in an area of ​​100m*100m*100m, and the communication radius between nodes i...

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Abstract

The invention provides a DV-hop visible light indoor positioning method based on fruit fly correction. The method comprises the steps that firstly, a mathematical model of visible light indoor positioning is established, and unknown nodes of a visible light system are positioned based on a DV-hop protocol; the optimal anchor node in the DV-hop visible light positioning method is selected by introducing a drosophila melanogaster optimization search algorithm, so that the average distance per hop is closer to the real distance between the anchor node and an unknown node, and the effect of improving the positioning precision is achieved.

Description

technical field [0001] The invention relates to the technical field of visible light indoor positioning optimization, in particular to a visible light indoor positioning method based on fruit fly corrected DV-hop. Background technique [0002] Indoor positioning technology is in increasing demand and receiving more and more attention. Positioning algorithms can be roughly divided into two types: ranging and non-ranging. The DV-Hop positioning algorithm is a positioning algorithm based on non-ranging. It is favored because it does not need to increase hardware costs and has high positioning accuracy. Visible light communication technology is a communication system that uses white light LEDs as information carriers. It has the advantages of rich spectrum resources, energy saving and environmental protection, low power consumption, and high positioning accuracy, and has become a research hotspot. Therefore, it is of great significance to study the visible light positioning al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/029H04W4/33G01S5/16H04B10/116
CPCG01S5/16H04B10/116H04W4/029H04W4/33
Inventor 张月霞殷生旺吴嘉敏
Owner BEIJING INFORMATION SCI & TECH UNIV
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