基于多天线系统的TOA特征值估计融合方法  

TOA Estimation and Integration Method Based on Multi-antenna System

作　　者：朱晓暄[1] 

机构地区：[1]科技部中国科学技术交流中心,北京100045

出　　处：《计算机科学》2012年第B06期166-168,共3页Computer Science

基　　金：国家973课题(2010CB955801)资助

摘　　要：TOA的测量精度对移动台定位精度有极大的影响。然而,现有的信号特征值估计由于多径传播以及非视距环境等因素,其测量误差一直无法得到有效的降低。通过利用多天线系统提供的多个TOA估计信息,采用信号处理以及数据融合等多种方式,大幅提高了信号特征值估计精度,并进一步提高了移动台定位精度。In urban environment with serious blocking of direct paths,as a result of non-line-of-sight（NLOS） propagation effect,the accuracy of TOA estimation as well as the accuracy of location estimation is significant influenced.We developed a new algorithm to mitigate the NLOS errors in location estimation based on multi-antenna system.Utilizing the TOAs obtained from different antennas in a multi-antenna array,the TOA with high accuracy is obtained by signal processing and integration.Simulation results show that this algorithm can mitigate NLOS errors effectively and improve the performance of TOA based location algorithm in NLOS environment significantly.

关 键 词：多天线 定位 TOA 

分 类 号：TN929.5[电子电信—通信与信息系统]