基于参数拟合的室内多用户定位算法  

A new multi-user indoor location algorithm based on difference distance-loss model with parameter fitting

作　　者：刘召伟[1] 徐凤燕[1] 王宗欣[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《电波科学学报》2008年第6期1090-1094,1105,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(60172021)

摘　　要：基于室内无线接收信号强度,提出了一种用于未知发射功率情况下的室内无线多用户定位算法。该方法根据差分距离-损耗模型,由已知距离下的差分接收功率值拟合得到模型参数,并用最大似然法估计用户位置。模拟及实验结果表明:该方法可以获得较为精确的室内用户位置估计。Based on indoor RSS, a multi-user indoor location algorithm is presented for the case of transmitting signal strength unavailable. Parameters of the difference distance-loss model are obtained by curve fitting based on the difference received signal strength at known distance. Maximum likelihood estimation algorithm is used to obtain location estimate. Simulations and experiments show the algorithm can obtain quite precise location result.

关 键 词：室内定位 差分距离一损耗模型 参数拟合 最大似然估计 

分 类 号：TN914[电子电信—通信与信息系统]