无源时差定位系统中信道时延影响效果分析  

Analysis of Impacts on Channel Delay in TDOA Passive Location System

作　　者：赵光伟 李力 王奎 

机构地区：[1]电子信息控制重点实验室,成都610036

出　　处：《电子信息对抗技术》2015年第2期6-9,25,共5页Electronic Information Warfare Technology

摘　　要：无源时差定位系统中,定位精度与多种因数有关。引入一种新的影响因数,即信道时延,对信道时延引起的定位误差进行仿真,分析得出了扣除信道时延的必要性。最后,介绍了两种信道时延测量方法,比较得出了最优的测量方法。通过扣除信道时延,定位精度会得到极大提高。Location precision in TDOA passive locationsystem is influenced by many factors. A new factor named channel delay is introduced. It is concluded that it is necessary to deduct the channel delay from simulation results on location error caused by channel delay. In conclusion two measurement methods of channel delay are introduced. The optimal measurement method is chose according to the analytic result. Location precision can be radically improved by deducting channel delay.

关 键 词：无源时差定位 定位精度 信道时延 

分 类 号：TN971.1[电子电信—信号与信息处理]