| 基于循环平稳性的约束自适应多径时延估计 |
| |
| 引用本文： | 熊秋犇,王江,杨景曙.基于循环平稳性的约束自适应多径时延估计[J].信号处理,2011,27(1). |
| |
| 作者姓名： | 熊秋犇 王江 杨景曙 |
| |
| 作者单位： | 1. 中国人民解放军92762部队,福建,厦门,361008
2. 解放军电子工程学院,安徽,合肥,230037 |
| |
| 摘 要： | 在有多径信号、多通道非平稳干扰信号以及平稳背景噪声的情况下,不考虑多径信号传输的时延估计方法不能准确地估计时延,甚至估计性能会恶化.为此,本文提出了基于循环平稳性的约束自适应多径时延估计算法,并对算法的收敛性能进行了分析.该算法可以有效地抑制干扰和噪声的影响,在低信噪比的情况下直接地、准确地进行自适应多径时延估计,特别对噪声是空间相关的情形也适用,克服了传统算法不能直接估计非整数倍采样间隔的时延和多径时延的缺点.计算机仿真试验验证了新方法的有效性.
|
| 关 键 词： | 多径时延估计 自适应 循环平稳性 |
Constrained Adaptive Multipath Time Delay Estimation Based on Cyclostationarity |
| |
| XIONG Qiu-ben,WANG Jiang,YANG Jing-shu.Constrained Adaptive Multipath Time Delay Estimation Based on Cyclostationarity[J].Signal Processing,2011,27(1). |
| |
| Authors: | XIONG Qiu-ben WANG Jiang YANG Jing-shu |
| |
| Affiliation: | XIONG Qiu-ben~1 WANG Jiang~2 YANG Jing-shu~2 (1.PLA,No.92762 Troop,Fujian Xiamen 361008,China,2.Electronic Engineering Institute of PLA,Anhui Hefei 230037,China) |
| |
| Abstract: | Taking into account the multipath signals,the multi-channels disturbances with non-stationary characteristic and stationary noises,the methods of time delay estimation without regard to multipath signals can't attain accurate time delay;even the behaviors of estimation are deteriorated.Therefore,the constrained adaptive multipath time delay estimation based on cyclostationarity is proposed in this paper,and the convergence behaviors of multipath time delay estimation of this method are derived.This approach... |
| |
| Keywords: | Multipath Time Delay Estimation Adaptive Cyclostationarity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
