A Method of WiFi Indoor Positioning Based on Omnidirectional Fingerprint Database

doi:10.13474/j.cnki.11-2246.2018.0038

Abstract

Abstract:

WiFi indoor positioning technology is an attractive research topic in the domain of navigation and location service.Human body has a great influence on WiFi signal attenuation in indoor environment.In this paper,we propose a method of WKNN positioning based on omnidirectional fingerprint database considering signal strength variations caused by user's orientation.The experimental results show that the proposed method has a better performance than fingerprinting localization based on orientation recognition.When the value of K is 4,the mean localization error is 1.44 m,and the confidential probability with 1 m is almost 54%,the confidential probability with 2 m is almost 88%.

Key words: indoor positioning, wireless fidelity, user's orientation, omnidirectional fingerprint database, orientation recognition

CLC Number:

P228

BI Jingxue, WANG Yunjia, CAO Hongji, WANG Yongkang. A Method of WiFi Indoor Positioning Based on Omnidirectional Fingerprint Database[J]. 测绘通报, 2018, 0(2): 25-29.

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