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ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method

A technology of error correction and three-dimensional positioning, which is applied in positioning, calculation model, free space transmission, etc., can solve the problems of technical gaps and less research on deviation angle calculation and estimation, so as to improve application flexibility and realize controllable precision The effect of optimizing and improving the convergence speed

Inactive Publication Date: 2018-03-20
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0004] There are few studies on the correction of errors and the calculation and estimation of deviation angles in traditional visible light communication systems, and there are technical gaps

Method used

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  • ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method
  • ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method
  • ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method

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Embodiment 1

[0053] Such as figure 1 As shown, a method of error correction and angle deviation determination based on ant colony algorithm (ACO) 3D positioning in visible light communication room and corresponding system system model. Due to positioning requirements, m LEDs are arranged on the ceiling, where m is a positive integer greater than or equal to 4. In the system of this example, 4 LEDs are used as a positioning unit. The positioning terminal is the photoelectric conversion element in the receiving system.

[0054] Such as figure 2 Shown, the system block diagram of the present invention. The transmitting system, transmission channel and receiving system constitute the indoor three-dimensional positioning system of visible light communication based on ant colony algorithm (ACO). After the baseband signal carried by each LED in the transmission system is spread by the CDMA spread spectrum module, the electrical signal is converted into a visible light signal by the LED drive...

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Abstract

The invention discloses an ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method. The ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method includes the steps: by means of global searching capability of an ant colony algorithm, quickly searching the indoor space and determining the optimallocating point; introducing an error factor into a pheromone concentration function of the ant colony algorithm to enable the pheromone function to obtain the minimum so as to achieve the aim of error correction; and performing calculation simulation on the situation having angle deviation, comparing with the result when a receiver is horizontally arranged, and determining the magnitude and direction of the angle deviation. The ACO-based VLC indoor three-dimensional positioning error correction and deviation angle determination method has the following advantages: 1) considering the practicalsituation of indoor communication, introducing the error factor into a light intensity attenuation factor, and determining the minimum location point by calculating the minimum of the pheromone concentration function; and 2) introducing the deviation angle, and determining the magnitude and direction of the deviation angle of the receiver through calculation and simulation.

Description

technical field [0001] The invention relates to a visible light communication indoor positioning technology, in particular to a method for correcting an indoor three-dimensional positioning error and determining a deviation angle of a visible light communication (VLC) based on an ant colony algorithm (ACO). Background technique [0002] In modern society, GPS (Global Positioning System) is more and more widely used in many industries such as transportation, surveying and mapping, and is used in positioning fields such as sports navigation, surrounding information query, and track recording. Therefore, the accuracy of positioning has aroused widespread concern. In the actual positioning process, there are more or less positioning errors, how to eliminate the errors has become a current research hotspot. In many visible light communication system models, due to the difference between the ideal environment and the real environment, the existence of noise leads to a large diffe...

Claims

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Application Information

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IPC IPC(8): G01S5/16G06N3/00H04B10/116
CPCG01S5/16G06N3/006H04B10/116
Inventor 文尚胜吴兴邦
Owner SOUTH CHINA UNIV OF TECH
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