Title :
Time-frequency receivers for locally optimum detection
Author :
Flandrin, Patrick
Author_Institution :
Lab. de Traitement du Signal, CNRS, Lyon, France
Abstract :
A time-frequency formulation is proposed for the optimum detection of nonstationary Gaussian signals in Gaussian noise, with emphasis on low-SNR (signal-to-noise ratio) situations. Time-frequency correlators are shown to match mathematical optimality with a physically meaningful interpretation when they are based on the Wigner-Ville transform. Two illustrations of the properties of the corresponding receivers are discussed: the first one is related to random time-variant channels and the second one to detection in presence of clutter
Keywords :
correlation methods; optimisation; signal detection; Gaussian noise; Wigner-Ville transform; clutter; correlators; locally optimum detection; mathematical optimality; nonstationary Gaussian signals; random time-variant channels; time frequency receivers; time-frequency formulation; Correlators; Eigenvalues and eigenfunctions; Gaussian noise; Gaussian processes; Infrared detectors; Signal detection; Signal representations; Signal synthesis; Signal to noise ratio; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197213
