An RSSI Gradient-based AP Localization Algorithm

	An RSSI Gradient-based AP Localization Algorithm
	Zhao Fang 1; Luo Haiyong 2; Geng Hao 1; Sun Qijin 1
	2014
发表期刊	CHINA COMMUNICATIONS
ISSN	1673-5447
卷号	11 期号:2 页码:100
摘要	Recent rapid rise of indoor location based services for smartphones has further increased the importance of precise localization of Wi-Fi Access Point (AP). However, most existing AP localization algorithms either exhibit high errors or need specialized hardware in practical scenarios. In this paper, we propose a novel RSSI gradient-based AP localization algorithm. It consists of the following three major steps: firstly, it uses the local received signal strength variations to estimate the direction (minus gradient) of AP, then employs a direction clustering method to identify and filter measurement outliers, and finally adopts triangulation method to localize AP with the selected gradient directions. Experimental results demonstrate that the average localization error of our proposed algorithm is less than 2 meters, far outperforming that of the weighted centroid approach.
关键词	POSITION ESTIMATION WIFI SYSTEM AP localization RSSI gradient clustering triangulation
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Ministry of Industry and Information Technology] ; [National High Technology Research and Development Program of China]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/35192
专题	中国科学院计算技术研究所期刊论文_中文
作者单位	1.Beijing University Posts & Telecommun, Sch Software Engn, Beijing 100876, Peoples R China 2.中国科学院 3.中国科学院计算技术研究所
推荐引用方式 GB/T 7714	Zhao Fang,Luo Haiyong,Geng Hao,et al. An RSSI Gradient-based AP Localization Algorithm[J]. CHINA COMMUNICATIONS,2014,11(2):100.
APA	Zhao Fang,Luo Haiyong,Geng Hao,&Sun Qijin.(2014).An RSSI Gradient-based AP Localization Algorithm.CHINA COMMUNICATIONS,11(2),100.
MLA	Zhao Fang,et al."An RSSI Gradient-based AP Localization Algorithm".CHINA COMMUNICATIONS 11.2(2014):100.