基于CDMA信号的TDOA定位时延参数获取算法  

Time Delay Estimation Method in TDOA Location System Based on CDMA Signals

作　　者：杨向星[1] 张群[1] 梁贤姣[2] 李开明[1] 孙凤莲[1] 

机构地区：[1]空军工程大学信息与导航学院 [2]中国人民解放军95357部队

出　　处：《科学技术与工程》2012年第27期6944-6948,共5页Science Technology and Engineering

基　　金：国家自然科学基金(60971100);陕西省电子信息系统综合集成重点实验室基金(201108Y08)

摘　　要：针对利用CDMA导频信号进行TDOA定位时存在时延参数与基站配对这一问题,结合CDMA无源雷达系统,提出基于串行干扰消除(SIC)和并行干扰消除(PIC)两种自动配对算法,并对这两种算法进行比较。仿真表明,这两种算法都可以完成对时延参数的获取,同时可实现时延与基站间的自动配对;另外,相比于并行干扰消除算法,串行干扰消除算法能够获得更高的检测成功概率,但是计算量偏大。Focused on the problem that the time delay must be matched with the base station during the process of TDOA Location using the CDMA pilot signal,two automatic matching algorithms are presented,which are based on successive interference cancellation（SIC） and parallel interference cancellation（PIC） for CDMA passive radar system.Simulation indicates that these two algorithms are able to estimate the time delay and match with the base station willingly;in addition,compared with the PIC algorithm,SIC algorithm can acquire more reliable delay parameters with mere calculation.

关 键 词：CDMA 串行干扰消除 并行干扰消除 自动配对算法 

分 类 号：TN929.5[电子电信—通信与信息系统]