DocumentCode
1753352
Title
Performance analysis of DOA estimation in the threshold region
Author
Athley, Fredrik
Author_Institution
Department of Signals and Systems, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
Volume
3
fYear
2002
fDate
13-17 May 2002
Abstract
This paper presents a performance analysis of Maximum Likelihood (ML) Direction-Of-Arrival (DOA) estimation in the threshold region using a sensor array. This region is a range of Signal-to-Noise Ratios (SNR) close to the threshold, where the estimation error due to outliers starts to rise very rapidly as the SNR decreases. Approximate expressions for the probability of outlier and the mean square estimation error are derived for the case of a single signal in white Gaussian noise and a single snapshot. It is verified by simulations that the approximations predict the ML DOA estimation performance with high accuracy also at low SNR where the Cramér-Rao bound is far too optimistic.
Keywords
Estimation;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on
Conference_Location
Orlando, FL, USA
ISSN
1520-6149
Print_ISBN
0-7803-7402-9
Type
conf
DOI
10.1109/ICASSP.2002.5745284
Filename
5745284
Link To Document