A global estimation for multichannel time-delay and signal parameters via genetic algorithm

被引：13

作者：

Chen, BS ^{[1
]}

Hung, JC ^{[1
]}

机构：

[1] Ling Tung Coll, Dept Finance, Taichung, Taiwan

来源：

SIGNAL PROCESSING | 2001年 / 81卷 / 05期

关键词：

D O I：

10.1016/S0165-1684(00)00242-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The joint maximum likelihood (ML) estimates time delays and the parameters of radiated signal, which is received by two or more spatially distributed receivers in the presence of additive noises, is a rather high nonlinear and complicated problem. The conventional algorithms are susceptible to local maximum problem that arises with multimodal (many peaks) likelihood function. This study presents an iterative algorithm based on genetic ones to estimate ML of multichannel time delays and signal parameters. Genetic algorithms are optimization of natural selection and evolutionary genetics. The proposed algorithm works in frequency domain and tends to find the global optimum solution without becoming trapped at local maximum. Finally, an example is given to illustrate the estimation of algorithm's performance. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1061 / 1067

页数：7

共 8 条

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