中文摘要：

针对复杂室内环境下视距（line of sight,LOS）和非视距（not line of sight,NLOS）并存的三维混合定位技术进行了研究。在LOS环境下,基于到达时间差（time difference of arrival,TDOA）定位算法优于其他定位技术;但受到室内环境尤其是NLOS环境下的多径效应,TDOA定位的精准度大大减弱。若能够正确评估传播衰减系数以此补偿多径效应带来的影响,那么基于接收信号强度（received signal strength,RSS）定位算法受到NLOS多径效应的影响将大大减小。提出了三维混合加权最小二乘（hybrid weighted least square,HWLS）RSS/TDOA算法,通过使用Nakagami-m分布鉴定当前信道是LOS/NLOS路径,用于室内环境下的目标定位,并通过实验验证该算法提高了定位精度。

英文摘要：

This paper investigated 3D positioning in an indoor line of sight（ LOS） and nonline of sight（ NLOS） combined environment. It was a known fact that time-difference-of-arrival-（ TDOA-） based positioning outperforms MS other techniques in LOS environments; however,multipath in an indoor environment,especially NLOS multipath,significantly decreased the accuracy of TDOA positioning. On the other hand,received-signal-strength-（ RSS-） based positioning was not affected so much by NLOS multipath as long as the propagation attenuation could be correctly estimated and the multipath effects had been compensated for. Based on the fact,it proposed a hybrid weighted least square（ HWLS） RSS / TOA method for target positioning in an indoor LOS / NLOS environment. It implemented the identification of LOS / NLOS path by using Nakagami-m distribution. An experiment verifies our proposed scheme.