Title :
Signal-selective direction finding for fully correlated signals
Author :
Schell, Stephan V. ; Gardner, William A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Davis, CA, USA
Abstract :
Summary form only given. A recent technique based on maximum likelihood (ML) arguments has been shown to perform quite well in the presence of fully correlated sources and does so in a computationally efficient manner compared to competing techniques such as exhaustive-search ML or vector-space MUSIC. However, it still suffers from a lack of signal-selectivity which can be disadvantageous in some applications, and it requires that the noise be Gaussian and independent and identically distributed from sensor to sensor for the method to be a true maximum-likelihood technique. An algorithm that effectively addresses the above drawbacks by exploiting the known spectral coherence properties of the desired signals as well as their spatial coherence properties has been developed
Keywords :
correlation theory; radio direction-finding; signal detection; signal processing; spectral analysis; algorithm; correlated signals; correlated sources; maximum-likelihood technique; signal selective direction finding; spatial coherence properties; spectral coherence properties; Acoustic signal processing; Autocorrelation; Direction of arrival estimation; Interference; Maximum likelihood estimation; Multiple signal classification; Sensor arrays; Signal processing algorithms; Spatial coherence; Speech processing;
Conference_Titel :
Multidimensional Signal Processing Workshop, 1989., Sixth
Conference_Location :
Pacific Grove, CA
DOI :
10.1109/MDSP.1989.97080