期刊名称：International Journal of Computer and Information Technology
印刷版ISSN：2279-0764
出版年度：2015
卷号：4
期号：2
出版社：International Journal of Computer and Information Technology
摘要：Existing localization approaches are divided into two groups: range-based and range-free. The range-free schemes often suffer from poor accuracy and low scalability, while the range-based localization approaches heavily depend on extra hardware capabilities or rely on the absolute RSSI values, far from practical. In this paper, an improved localization algorithm based on RSSI of wireless sensor networks is proposed, which uses the geometric relationship to find the most accurate point of RSSI for calculating the distance and utilizes the variation law of RSSI for localization. The simulation shows that the proposed algorithm has the smaller average positioning error and more accuracy compared with the trilateral localization algorithm based on RSSI ranging.
关键词：distance measurement; localization; RSSI; the ; geometric relationship
