Estimation of Short Range Multiple Coherent Source Location by Using MUSIC Algorithm

Takashi KATO  Kazumasa TAIRA  Kunio SAWAYA  Risaburo SATO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B   No.8   pp.3317-3320
Publication Date: 2005/08/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.8.3317
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section of 2004 International Symposium on Electromagnetic Compatibility)
Category: 
Keyword: 
MUSIC algorithm,  estimation of source location,  direction of arrival,  multiple coherent sources,  

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Summary: 
An estimation method of source location of undesired electromagnetic wave from electronic devices by using the MUSIC algorithm is proposed. The MUSIC algorithm can estimate the direction of arrival accurately, however, the estimation error is large in the case of short range multiple coherent sources. In order to overcome this problem, a method to improve the estimation accuracy is presented. Experimental results show that the proposed method can reduce the maximum estimation error from 7 cm of the conventional method to 2 cm.