移动通信系统无源定位性能分析和比较  

Performance analysis and comparison of passive location in mobile communication system

作　　者：田增山[1] 何维[1] 邢培基[1] 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2009年第1期45-49,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：教育部重点项目(207097);重庆市科委自然科学基金(2008BB2412)

摘　　要：针对无源定位系统的特点和GSM,CDMA移动通信系统信号结构,详细分析了2种移动通信系统环境下实现对低空飞行目标无源定位的关键指标和主要技术参数,介绍了移动通信系统实现低空飞行目标无源定位存在的难点-作用距离、直达信号抑制、同步精度、几何精度因子等,对存在的难点给出了增加积累时间和目标运动模型辅助粒子滤波算法等解决建议。According to the characteristic of the passive location system and the signal structure of GSM and CDMA system, the key parameter of passive location using GSM and CDMA system for low-altitude flying target was analyzed. The difficulties of passive location using GSM and CDMA system for low-altitude flying target were introduced, which include the operation range, the cancel of direct signal, the synchronization precision and GDOP, and the solutions for them using more correlator time and particle filter algorithm aided by kinematic model of target were also proposed.

关 键 词：无源定位 低空飞行目标 直达信号抑制 作用距离 同步精度 

分 类 号：TN929.5[电子电信—通信与信息系统]