Title :
Performance analysis of the MVDR spatial spectrum estimator
Author :
Vaidyanathan, Chandra ; Buckley, Kevin M.
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
6/1/1995 12:00:00 AM
Abstract :
The performance of the minimum variance distortionless response spectrum estimator is analyzed. Finite data effects and the sensitivity of the method to random perturbations in the signal model and in the noise covariance matrix are studied. The snapshots are assumed to be complex independent identically distributed Gaussian vectors. An expression for the exact model asymptotic bias is also derived. Analytical expressions for the variance and the bias of the estimator are derived and compared with simulation results. These expressions are then employed to study the characteristics of the estimator
Keywords :
Gaussian processes; covariance matrices; direction-of-arrival estimation; noise; signal sampling; spatial filters; spectral analysis; DOA estimates; MVDR spatial spectrum estimator; estimator bias; estimator variance; exact model asymptotic bias; finite data effects; independent identically distributed Gaussian vectors; minimum variance distortionless response; noise covariance matrix; performance analysis; random perturbations sensitivity; signal model; simulation results; snapshots; Analysis of variance; Analytical models; Covariance matrix; Direction of arrival estimation; Helium; Performance analysis; Sensor arrays; Spatial filters; Statistical distributions; Statistics;
Journal_Title :
Signal Processing, IEEE Transactions on
