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Signal detection with noise power variation between the hypotheses

Vincent, François and Besson, Olivier and Richard, Cédric Signal detection with noise power variation between the hypotheses. (2009) In: IEEE Signal Processing Society : 13th DSP Workshop & 5th SPE Workshop, 03-07 Janv 2009, Marco Island, United States .

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Detecting a known signal in additive noise is a widespread problem. Two different cases have been processed in the literature whether the noise power is known or not. Here we consider the case where the noise power could vary between the null and alternative hypothesis. This situation occurs if the receiver electronic behave differently if the signal of interest (SOI) is present or when the signal signature is not perfectly known or could change. We have developed the generalized likelihood ratio test (GLRT) for the problemat hand and compared its performances with the one which assumes the same noise power under the two hypotheses. We first present some numerical simulations to attest to the validity of the analysis. Then we experiment the new detector on real data to detect knocking for car engine management to show the improvement with the standard detector.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Université de Technologie de Troyes - UTT (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Laboratory name:
Département d'Electronique, Optronique et Signal - DEOS (Toulouse, France) - Signal, Communication, Antenne et Navigation - SCAN
Deposited On:03 Feb 2009 14:21

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