电子测量与仪器学报

潘峰,王长林,赵超.基于递归最小二乘的单通道混合信号时延估计算法[J].电子测量与仪器学报,2021,35(3):197-203

基于递归最小二乘的单通道混合信号时延估计算法

Single channel mixed signal delay estimation algorithm based on recursive least squares

DOI：

英文关键词:delay estimation recursive least squares single channel mixed signal

基金项目:成都市交通+旅游大数据应用技术研究基地项目(2018003)资助

作者	单位
潘峰	1.西南交通大学希望学院信息工程系成都610400；
王长林	2.西南交通大学信息科学与技术学院成都610031
赵超	1.西南交通大学希望学院信息工程系成都610400；

Author	Institution
Pan Feng	1. Department of Information Engineering, Southwest Jiaotong University Hope College, Chengdu 610400, China;
Wang Changlin	2. Department of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
Zhao Chao	1. Department of Information Engineering, Southwest Jiaotong University Hope College, Chengdu 610400, China;

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中文摘要:

针对单通道混合信号的时延估计问题，提出了一种基于递归最小二乘(recursive least squares，RLS)的算法，将时延估计分为了基于循环统计量的粗估计和基于RLS的细估计过程，用二乘方的时间平均准则，对时延粗估计值进行迭代更新，完成整个估计过程。该算法结构简单，收敛速度快，估计精度提升明显，但较依赖于两路信号的时延差。仿真实验结果证明了该算法的有效性。

英文摘要:

Aiming at the problem of delay estimation for single channel mixed signals, an algorithm based on recursive least squares (RLS) is proposed, which divides the delay estimation into coarse estimation based on cyclic statistics and fine estimation based on RLS, using the time averaged criterion of power of two to iteratively update the rough estimate of time delay to complete the entire estimation process. The algorithm has a simple structure, fast convergence speed, and obvious improvement in estimation accuracy, but it is more dependent on the delay difference of the two signals. Simulation experiment results prove the effectiveness of the algorithm.

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