Title :
A comparison of element and beam space spatial-spectrum estimation for multiple source clusters
Author :
Xu, Xiao ; Buckley, Kevin
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
Some of the relative advantages and disadvantages of performing eigenspace spatial-spectrum estimation in beam-space as opposed to element-space are considered. The issue of relative performance, specifically spectral-resolvability and peak position variance and bias, are addressed. It is concluded that when there are only sources impinging from a single sector (the sector selected for beam-space processing), there is no performance advantage in either element-space or beam-space processing. However, when there are out-of-sector sources beam-spacing processing has both advantages and disadvantages
Keywords :
eigenvalues and eigenfunctions; estimation theory; spectral analysis; beam space spatial-spectrum estimation; eigenspace spatial-spectrum estimation; element-space processing; multiple source clusters; peak position variance; spectral-resolvability; Contracts; Covariance matrix; Dynamic range; Hardware; Narrowband; Phased arrays; Sensor arrays; Sonar; Spatial resolution; Spectral analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116160
