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

Volume

43

Issue

6

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1427

Lastpage

1437

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;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.388855

Filename

388855