Besson, Olivier and Scharf, Louis and Vincent, François Matched direction detectors. (2005) In: 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing - ICASSP 2005, 19-23 March 2005, Philadelphia, United States.
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Official URL: http://dx.doi.org/10.1109/ICASSP.2005.1416174
In this paper, we address the problem of detecting a signal whose associated spatial signature is subject to uncertainties, in the presence of subspace interference and broadband noise, and using multiple snapshots from an array of sensors. To account for steering vector uncertainties, we assume that the spatial signature of interest lies in a given linear subspace H while its coordinates in this subspace are unknown. The generalized likelihood ratio test (GLRT) for the problem at hand is formulated. We show that the GLRT amounts to searching for the best direction in the subspace H after projecting out the interferences. The distribution of the GRLT under both hypotheses is derived and numerical simulations illustrate its performance.
|Item Type:||Conference or Workshop Item (Paper)|
|Audience (conference):||International conference proceedings|
|Institution:||Other partners > Colorado State University - CSU (USA)|
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Département d'Electronique, Optronique et Signal - DEOS (Toulouse, France) - Signal, Communication, Antenne et Navigation - SCAN
Department of Electrical and Computer Engineering (Fort Collins, USA)
|Deposited By:||Francois VINCENT|
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