Localization algorithm based on difference estimation for wireless sensor networks

摘要：

In order to suppress effectively the effects of RSSI error to wireless sensor networks node localizations precision, individual diversity difference coefficient, distance difference coefficient and distance difference localization equation is defined based on the analysis of the models of maximuM likelihood estimation and RSSI. The closest beaconing node to object node as reference node corrects measure distance based on RSSI by difference method. A distance difference localization algorithm is put forward through combining difference correction method and maximum likelihood estimation method. This localization algorithm neednt additional hardware spending, easy to be realized and its localization error is less than 2.5m, therefore it is fit for localization of WSN node whose operation ability and power supply are restricted.

关键词： Wireless Sensor Network Localization RSSI Mazimum Likelihood Estimation Difference

作者: Fugen Su Weizheng Ren Hongli Jin

作者单位: Century College, Beijing University of Posts and Telecommunications Beijing, P. R. China School of Electronic Engineering,Beijing University of Posts and Telecommunications Beijing, P. R. C Beijing Institute of Economic Management Beijing, P. R. China

会议类型: 国际会议

会议名称: The International Conference on Communication Software and Networks(2009 IEEE通信软件与网络国际会议 ICCSN 2009)

会议地点: 成都

会议语种:英文

页码: 499-503

在线出版日期: 2009-02-20（万方平台首次上网日期，不代表论文的发表时间）