摘要
基于强度(RSSI)的移动终端定位方法有其特有的优势,是测量报告(MR)分析中一项关键技术。为了提高定位精度,这里改进了基于RSSI差值的定位算法,采用加权最小二乘法(WLS)求解线性定位方程组,估计了距离测量和计算引入的定位误差,采用两次求解来消除距离误差,最后对算法的定位精度进行了测试,给出了测试结果,并对比了几种常用的强度定位算法的定位精度,结果表明改进后的算法明显提高了定位精度。
An effective algorithm for mobile terminal location is proposed,which uses Weighted Least Square to resolve linear equations and requires no hardware modification of the network equipment.The proposed algorithm takes into account the distance error,and resolves the equations twice,thus to eliminate the error.The results of driving test indicate that the modified algorithm is much better than CI＋TA method and Cell center method in positioning accuracy.
出处
《通信技术》
2011年第7期78-80,共3页
Communications Technology
基金
国家自然科学基金(批准号:50877004)
