Indoor three-dimensional positioning algorithm based on wireless communication base station

A wireless communication, three-dimensional positioning technology, applied in wireless communication, service based on location information, service based on specific environment, etc., can solve the problem of inability to meet positioning needs

Inactive Publication Date: 2018-10-12
WENZHOU PUMP VALVE ENG RES INSTOF LANZHOU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In urban areas full of high-rise buildings, inside buildings, underground parking lots and other areas, GPS and other systems cannot meet the positioning requirements

Method used

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  • Indoor three-dimensional positioning algorithm based on wireless communication base station
  • Indoor three-dimensional positioning algorithm based on wireless communication base station
  • Indoor three-dimensional positioning algorithm based on wireless communication base station

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Embodiment Construction

[0099] The present invention will be further described below in conjunction with accompanying drawing:

[0100] The technical problem to be solved by the present invention is: in many scenarios such as indoors, underground, urban areas with many high-rise buildings, etc., the GPS positioning performance is poor. The coverage of Wi-Fi devices is limited, and the frequency band where Wi-Fi devices send and receive signals is prone to interference. The present invention provides an indoor three-dimensional positioning algorithm based on wireless communication base stations, which not only overcomes the coverage of current mainstream positioning technologies It is more suitable for indoor wireless communication base station 3D positioning scenarios, and has the advantages of high positioning accuracy, simple calculation, and fast convergence speed. Table 1 illustrates the symbols appearing in the present invention:

[0101] Table 1. Symbols and explanations appearing in the prese...

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Abstract

The invention discloses an indoor three-dimensional positioning algorithm based on a wireless communication base station, and the algorithm comprises the following steps: aiming at problems, such as that GPS and Wi-Fi devices have relatively poor positioning performance, limited coverage and frequency bands vulnerable to interference in an indoor scene, deciding to perform positioning for a hand-held terminal in an office based on operator wireless communication base station equipment; then, aiming at TOA data of a mobile phone terminal and the communication base station, building an error correction function, thereby reducing influence of NLOS on positioning accuracy. Then, a search domain of a solution is reduced through propagation delay of TOA. Finally, an improved TOA positioning model is solved through a genetic algorithm. With the algorithm provided by the invention, a rational, high-accuracy and convenient solution is provided for the indoor three-dimensional positioning, a problem of relatively poor coverage and depth of mainstream positioning technologies is overcome, and the algorithm provided by the invention is more suitable for an indoor wireless communication base station three-dimensional positioning scene and has the advantages of high positioning accuracy, simple calculation, fast convergence, and so on.

Description

technical field [0001] The invention relates to the technical field of flow shop scheduling, in particular to an indoor three-dimensional positioning algorithm based on a wireless communication base station. Background technique [0002] GPS is currently the most widely used positioning technology. When the GPS receiver works indoors, the signal is greatly attenuated due to the influence of buildings, and the positioning accuracy is also very low. It is impossible to directly extract navigation data and time information from satellite broadcasts as it is outdoors. In order to obtain higher signal sensitivity, it is necessary to extend the dwell time on each code delay, and A-GPS technology provides the possibility to solve this problem. Indoor GPS technology uses a large number of correlators to search for possible delay codes in parallel, which also helps to achieve fast positioning. The advantage of using GPS for positioning is that the effective coverage of satellites i...

Claims

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Application Information

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IPC IPC(8): H04W4/021H04W4/33H04W64/00G01S5/02
CPCG01S5/0278H04W4/021H04W4/33H04W64/00
Inventor 赵付青杨国强宋厚彬姚毓凯何继爱
Owner WENZHOU PUMP VALVE ENG RES INSTOF LANZHOU UNIV OF TECH
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