极化敏感阵列的无线定位算法  

Wireless Location Algorithm of Polarization Sensitive Array

作　　者：郭志强[1,2] 徐丽娜[1] 

机构地区：[1]吉林大学珠海学院,广东珠海519000 [2]吉林大学仪器科学与电气工程学院,吉林长春130022

出　　处：《计算机仿真》2012年第12期152-156,337,共6页Computer Simulation

基　　金：国家自然科学基金重点资助项目(60535010)

摘　　要：无线定位技术在营救等领域有着广泛的应用前景。提出一种新的基于极化敏感阵列的定位方法。新方法将极化敏感阵列天线由均匀线阵改进为均匀平面阵,利用ESPRIT方法实现二维到达角(方位角和仰角)以及首达路径的时延参数和极化参数的估计,进而利用参数实现无线定位。联合首达路径的时延参数以及方位角和仰角信息,可在三维空间确定目标,进而提高定位精度。在多径环境下仿真,仿真结果证明了算法的有效性且定位精度满足实际需要。改进方法适用于TDMA系统,可应用于手机用户定位、移动监护机器人定位等,特别是只有一个基站或接入点的定位。Wireless location technology has wide application prospects, such as rescue and so on. A new kind of positioning method based on polarization sensitive array was proposed. The method improves polarization sensitive array antenna, and changes it into a uniform planar array from a uniform linear. ESPRIT method was used to estimate the two - dimensional angle of arrival and the first arrival path delay parameters and polarization parameters, and then these parameters were used to achieve the wireless location. The first arrival path delay parameters, the azimuth and elevation information were jointed to locate target in three - dimensional, thereby increasing the positioning accuracy. The simulation of the algorithm on multipath environment was carried out, and the results show that the effectiveness of algorithm and the positioning accuracy can meet actual needs. The method is suitable for TDMA systems, and can be applied to the positioning of mobile phone users, mobile monitoring robot positioning, and so on, especially to the positioning of only one base station or access point.

关 键 词：方位角 仰角 极化敏感阵列 定位 均匀平面阵列 

分 类 号：TN911[电子电信—通信与信息系统]