Confidence fused WiFi fingerprint indoor positioning algorithm and system

An indoor positioning and confidence technology, applied in positioning, transmission systems, radio wave measurement systems, etc., can solve the problems of inaccurate signal acquisition and large online positioning errors, etc., to optimize the Euclidean distance, reduce jumps, and reduce effect of error

Inactive Publication Date: 2019-05-10
JIANGXI NORMAL UNIVERSITY
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Problems solved by technology

Inaccurate signal collection caused by complex indoor environment, multipath effect, radio fre

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  • Confidence fused WiFi fingerprint indoor positioning algorithm and system
  • Confidence fused WiFi fingerprint indoor positioning algorithm and system
  • Confidence fused WiFi fingerprint indoor positioning algorithm and system

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[0042] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0043] These and other aspects of the embodiments of the present invention will become clear with reference to the following description and drawings. In these descriptions and drawings, some specific implementations in the embodiments of the present invention are specifically disclosed to show some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not This restriction. On the contrary, th...

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Abstract

The invention provides a confidence fused WiFi fingerprint indoor positioning algorithm and system. The method comprises the steps of: acquiring multiple AP signal strength characteristic values of various reference points for positioning by using acquisition equipment in an offline acquisition stage, furthermore, pre-processing the signal strength characteristic values, and calculating the signalstrength characteristic mean value and the mean square error; and, determining the confidence by using a constructed mean square error interval and confidence virtual mapping table after obtaining the mean square error, and finally, uploading the confidence into a server position fingerprint database together with the serial number of the reference points, a signal strength characteristic mean value set and a geographic coordinate. In an online positioning stage, the confidence is added when real-time obtained user to-be-positioned point signal strength characteristic value data and characteristic data in the database are subjected to Euclidean distance matching calculation; and the effect of optimizing the distance is achieved. By utilization of the confidence fused WiFi fingerprint indoor positioning algorithm in the invention, jump can be reduced; the stability is improved; and the positioning precision is increased.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a WiFi fingerprint indoor positioning algorithm and system with fusion confidence. Background technique [0002] People spend more than 80% of their time in the indoor environment, but due to various factors such as technology and cost, indoor positioning has not been widely used. At present, scholars at home and abroad have proposed indoor positioning technologies and application systems based on wireless fidelity, Bluetooth, infrared, radio frequency identification, ultrasonic, ultra-wideband, etc., considering factors such as deployment cost and positioning accuracy, among which the application of WLAN indoor positioning technology based on WiFi The broadest prospects. [0003] The RSS-based WLAN indoor positioning technology uses the correlation between the RSS value and the geographic location coordinates to realize the position estimation of the target. This tec...

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Application Information

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IPC IPC(8): G01S5/02H04B17/318H04W64/00
Inventor 余敏宋斌斌郭杭
Owner JIANGXI NORMAL UNIVERSITY
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