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Title: Scattering statistics of Doppler faded acoustic signals using speckle noise models
Authors: Daba, Jihad S. 
Affiliations: Department of Electrical Engineering 
Keywords: Acoustic signal detection
Statistical analysis
Doppler effect
Multipath channels
Fading channels
Acoustic signal processing
Phase shift keying
Acoustic wave scattering
Subjects: Probability
Issue Date: 2008
Publisher: IEEE
Part of: Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory.
Start page: 185
End page: 189
Conference: International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory DIPED (8th : 23-25 Sept. 2003 : Lviv, Ukraine) 
Understanding scattering multipath channels that fade randomly with respect to time, frequency, and space is very crucial for the accurate detection of objects and the study of their scattering characteristics when mapped by active radar or sonar systems. In this paper, we derive stochastic models for the probability density function (pdf) of the shift in the carrier frequency caused by the Doppler effect on the received illuminating signal. Our derivation is based on single- and multi-look partially developed speckle noise models, which are in perfect agreement with the Doppler spread in the Clarke's model. Finally, we study the problem of object detection in randomly faded channels by analogy to optimal detection of binary phase shift keying signals in digital communication.
Ezproxy URL: Link to full text
Type: Conference Paper
Appears in Collections:Department of Electrical Engineering

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