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04/16/02 Colloquium
DR. STEPHEN WATSON
School of Mathematics, Univesity of Nottingham, UK
School of Mathematics, Univesity of Nottingham, UK
FREQUENCY DEMODULATION IN THE PRESENCE OF MULTIPLICATIVE SPECKLE NOISE
Abstract: In this talk we show that amplitude weighting can improve the accuracy of frequency measurements made on signals contaminated by multiplicative Gaussian noise. The more general non-Gaussian case is investigated through the study of the statistics of a phase-screen scattering model. We shall also discuss experiments performed in an analogous regime to the phase-screen scattering model. The results are relevant to a variety of remote sensing and signal processing problems.