Delay and Doppler spreads in underwater acoustic particle velocity channels

Signal processing and communication in acoustic particle velocity channels using vector sensors are of interest in the underwater medium. Due to the presence of multiple propagation paths, a mobile receiver collects the signal with different delays and Doppler shifts. This introduces certain delay a...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2011-04, Vol.129 (4), p.2015-2025
Main Authors: Guo, Huaihai, Abdi, Ali, Song, Aijun, Badiey, Mohsen
Format: Article
Language:English
Subjects:
Acoustics
Acoustics - instrumentation
Angle of arrival
Channels
Computer Communication Networks - instrumentation
Delay
Doppler
Doppler Effect
Military Science - methods
Models, Theoretical
Oceans and Seas
Signal Processing, Computer-Assisted - instrumentation
Spreads
Underwater acoustics
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Summary:Signal processing and communication in acoustic particle velocity channels using vector sensors are of interest in the underwater medium. Due to the presence of multiple propagation paths, a mobile receiver collects the signal with different delays and Doppler shifts. This introduces certain delay and Doppler spreads in particle velocity channels. In this paper, these channel spreads are characterized using the zero-crossing rates of channel responses in frequency and time domain. Useful expressions for delay and Doppler spreads are derived in terms of the key channel parameters mean angle of arrival and angle spread. These results are needed for design and performance prediction of systems that utilize underwater acoustic particle velocity and pressure channels.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3533721