Title :
The Influence of Emitter and Receiver Motion on Acoustic Coherence in Shallow Water
Author :
Sazontov, Alexander G. ; Vdovicheva, Nadezhda K.
Author_Institution :
Inst. of Appl. Phys., Russian Acad. of Sci., Nizhny
Abstract :
This paper is aimed at studying the source and receiver motion effects on the energy and correlation characteristics of the acoustic field in shallow water. The statistical analysis is based on the radiation transport equation for the mutual coherence function (MCF) of the multimodal Doppler-shifted field. A general computer program has been elaborated to implement this theory for rough surface scattering by fully developed wind seas. Calculations of the expected total average acoustic intensity and two-point coherence function are presented.
Keywords :
Doppler effect; acoustic radiators; acoustic receivers; acoustic signal processing; acoustic wave scattering; motion compensation; ocean waves; statistical analysis; underwater acoustic propagation; wind; acoustic field correlation characteristics; acoustic field energy characteristics; average acoustic intensity; emitter motion effects; multimodal Doppler shifted field; mutual coherence function; radiation transport equation; receiver motion effects; rough surface scattering; sea wind; shallow water acoustic coherence; statistical analysis; two point coherence function; Mutual coherence function (MCF); numerical modeling; rough surface scattering; second-moment equation; shallow-water acoustic propagation; source and receiver motion;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2008.2007754
