一种简单高效的前沿检测时间估计算法及其应用  

A sample effective algorithm of time estimation of leading edge detection and its applications

作　　者：包杰[1] 张东旭[1] 

机构地区：[1]重庆邮电学院,重庆400065

出　　处：《重庆邮电学院学报（自然科学版）》2006年第1期79-81,95,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

摘　　要：在基于时间的无线定位系统中,时间估计算法的精度和复杂度是衡量系统性能的关键因素。在直接相关检测的基础上提出一种新的前沿检测算法,通过设定检测门限对相关峰的前沿进行检测得到时间估计。经过仿真分析验证,此算法有效地提高了定位精度和一致性,并对多径误差具有一定的抑制作用。In the Time-based Radio Location System, the precision and complexity of the time estimation algorithm are the key factors that affect the system performance. This paper presents a new leading-edge detection algorithm based on the direct correlation search, which sets on a threshold to estimate the leading edge of the correlation impulse. The simulations show that the algorithm has higher stability, positioning precision and capability of the multipath error reduction.

关 键 词：到达时间 到达时间差 前沿检测 多径误差 

分 类 号：TN929.53[电子电信—通信与信息系统]