Title :
On the use of the global matched filter for DOA estimation in the presence of correlated waveforms
Author :
Fuchs, Jean-Jacques
Author_Institution :
IRISA, Univ. de Rennes I, Rennes
Abstract :
The correlation between waveforms arriving at an array of sensors, which is generally a consequence of multipath propagation, can drastically degrade the performance of source localization and detection schemes. Most approaches proposed so far to handle this difficulty, consist in performing some preprocessing aiming to decorrelate the signals and have limited effects. They are moreover restricted to specific array geometries. We present a technique that works for any geometry and that is able to handle coherent signals as well. It simply relies on no prior assumption on spatial stationarity.
Keywords :
array signal processing; decorrelation; direction-of-arrival estimation; filtering theory; matched filters; sensor arrays; DOA estimation; coherent signals; correlated waveforms; global matched filter; multipath propagation; sensor array; source detection; source localization; Covariance matrix; Decorrelation; Degradation; Direction of arrival estimation; Geometry; Matched filters; Maximum likelihood detection; Maximum likelihood estimation; Sensor arrays; Signal to noise ratio; DOA estimation; correlated waveforms; generalized maximum likelihood ratio; global matched filter;
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2008.5074406