基于历史路径概率匹配的室内定位方法

Probability matching based on historical path in location estimation

基于信号强度的匹配定位是无线网络定位的主要方法,本文在传统概率匹配定位的基础上结合定位终端的历史位置信息,提出一种基于概率匹配的最短历史路径算法——ProHI算法,实现了室内单信源情况时对定位终端的位置估计,并且在室内存在多信源时,定位精度相对传统定位算法有较大提高。最后通过实验验证了该算法的有效性。

Mapping method based on signal strengths is the main technology in wireless location estimation. This paper proposes a shortest history path algorithm based on probability matching,called ProHI. The new estimation algorithm is the combination of the traditional probability matching location estimation and the user location tracking information,it not only works in the singular AP environment,but also performs well when multiple APs are used,compares with the traditional algorithm. Finally some tests are carried out to verify the effectiveness of the new algorithm.