Influence of Joint Block-Diagonalization of Spatio-Temporal Correlation Matrix on Spectral Resolution
Gaoxiang Xing · Control Engineering of China · 2009
The spatio-temporal correlation matrix of array receiving data is joint block-diagonalized using the Jacobi algorithm to get the average eigenvalue and eigenvector.The average eigenvalue and eigenvector is used in the minimum variance distortionless response(MVDR) algorithm proposed by Capon to get the modified MVDR algorithm.Simulation example shows that the modified MVDR algorithm is better than the conventional MVDR algorithm.The performance of the modified MVDR algorithm is much better than MUSIC algorithm when the signal sources if partialy correlated and especially in the case of under-estimation of the number of signal sources.The prior information of the number of signal sources is not needed when using the modified MVDR algorithm.