Title :
Modelling and estimation of mutual coupling between array elements
Author :
Manikas, A. ; Fistas, N.
Author_Institution :
Dept. of Electron. & Electr. Eng., London Univ., UK
Abstract :
The adverse effect of mutual coupling between the elements of an array, on the performance of super-resolution techniques is demonstrated. An analytical modelling of the mutual coupling is presented, and its effects are modelled in the form of a complex square matrix, the mutual coupling matrix (MCM). The MCM depends on the array geometry and the array electrical characteristics, but not on the direction of the incoming signals. Based on the modelling of the mutual coupling effects, a new technique is proposed for estimating the mutual coupling matrix of an array of general geometry. The proposed method employs one pilot source, and uses an extra element at some distance away from the original array
Keywords :
array signal processing; covariance matrices; parameter estimation; signal resolution; analytical modelling; array electrical characteristics; array elements; array geometry; complex square matrix; estimation; mutual coupling matrix; super-resolution techniques; Covariance matrix; Educational institutions; Electric variables; Geometry; Mathematical model; Multiple signal classification; Mutual coupling; Scholarships; Transmission line matrix methods; Uncertainty;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389757