带限信号时延估计快速算法研究  

Fast Algorithm Study on Time Delay Estimation of Band-Limited Signal

作　　者：沈彩耀[1] 李红波[1] 张颋[1] 曾繁景[1] 

机构地区：[1]信息工程大学信息工程学院,河南郑州450002

出　　处：《信息工程大学学报》2007年第1期77-80,共4页Journal of Information Engineering University

摘　　要：针对信号一般有带限的特性,本文利用线性调频Z变换(CZT)的方法对频谱进行细化,提出一种可以满足实际需要的相关峰插值快速算法IBCZT。仿真结果表明该算法可以大大提高时延估计精度和速度,对于宽带相关噪声有一定的抑制作用,更具有实时性。Because of band-limited characteristic of signals in communication, this paper calculates band-limited signal＇s fine spectrum with Chirp-Z transform,, and presents a new way of computing correlation peak accurately, which is called IBZCT. Simulation results prove that the algorithm can increase the accuracy of TDE, reduce affection caused by correlated Broad Band gauss noise by using band limited spectrum of signal, and meet real-time requirement in practice.

关 键 词：时延估计 谱分析 线性调频Z变换 带限信号 

分 类 号：TN911[电子电信—通信与信息系统]