Title :
Performance analysis of MUSIC for non-circular signals in the presence of mutual coupling
Author :
Huang, Z.T. ; Liu, Z.M. ; Liu, Jiangchuan ; Zhou, Y.Y.
Author_Institution :
Dept. of Electron. Sci. & Technol., Nat. Univ. of Defense Technol., Changsha, China
fDate :
10/1/2010 12:00:00 AM
Abstract :
The mutual coupling effect in practical arrays is hard to eliminate completely, and such effect brings a deterministic bias into the direction-of-arrival (DOA) estimates for non-circular signals. The bias is analysed in this study and closed-form expressions for the biases in uniform linear arrays (ULA) and general linear arrays (GLA) are given. Numerical examples are carried out to verify the correctness of the theoretical biases in various signal environments.
Keywords :
array signal processing; direction-of-arrival estimation; signal classification; DOA estimation; MUSIC; closed-form expressions; direction-of-arrival estimation; general linear arrays; mutual coupling effect; noncircular signals; uniform linear arrays;
Journal_Title :
Radar, Sonar & Navigation, IET
DOI :
10.1049/iet-rsn.2009.0003
