| 一种基于全向指纹库的WiFi室内定位方法 |
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| 引用本文： | 毕京学,汪云甲,曹鸿基,王永康.一种基于全向指纹库的WiFi室内定位方法[J].测绘通报,2018,0(2):25-29. |
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| 作者姓名： | 毕京学 汪云甲 曹鸿基 王永康 |
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| 作者单位： | 中国矿业大学环境与测绘学院, 江苏 徐州 221116 |
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| 基金项目： | 国家重点研发计划，江苏省普通高校学术学位研究生创新计划 |
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| 摘 要： | WiFi室内定位技术是导航与位置服务领域的研究热点。室内环境下WiFi信号衰减受人体遮蔽影响较大，本文考虑了用户朝向引起的信号强度差异，提出了一种基于全向指纹库的WiFi室内定位方法。试验结果表明，该方法定位精度高于基于方向识别的指纹定位方法，当K取4时，平均定位误差为1.44 m，定位精度优于1 m的置信概率为54%，优于2 m的置信概率为88%。
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| 关 键 词： | 室内定位 WiFi 用户朝向 全向指纹库 方向识别 |
| 收稿时间： | 2017-08-05 |
A Method of WiFi Indoor Positioning Based on Omnidirectional Fingerprint Database |
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| BI Jingxue,WANG Yunjia,CAO Hongji,WANG Yongkang.A Method of WiFi Indoor Positioning Based on Omnidirectional Fingerprint Database[J].Bulletin of Surveying and Mapping,2018,0(2):25-29. |
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| Authors: | BI Jingxue WANG Yunjia CAO Hongji WANG Yongkang |
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| Institution: | School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China |
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| 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％. |
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| Keywords: | indoor positioning wireless fidelity user's orientation omnidirectional fingerprint database orientation recognition |
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