Frequency estimation and propagation loss for relative source/receiver motion in an oceanic waveguide

Author

Fawcett, John A.

Author_Institution

Defence Res. Establ. Pacific, FMO Victoria, BC, Canada

fYear

1989

fDate

1-2 June 1989

Firstpage

557

Lastpage

560

Abstract

The effects of source and receiver motion on sound propagation in an oceanic waveguide are investigated. An explicit expression is given for the discrete Fourier transform of a harmonic signal emitted by a moving source in terms of the source and receiver velocities and the modes of the waveguide. This expression is shown to be very accurate and is used to investigate the variation of frequency observations as a function of range, dynamical, and signal-processing parameters. A realistic Northeast Pacific scenario is used in the numerical computations. The effect of source motion on propagation loss between the source and a receiver is examined.<>

Keywords

Fourier transforms; acoustic signal processing; acoustic wave propagation; spectral analysis; underwater sound; Northeast Pacific; discrete Fourier transform; frequency estimation; frequency observations; harmonic signal; numerical computations; oceanic waveguide; propagation loss; range; receiver motion; receiver velocity; signal-processing; sound propagation; source motion; source velocity; underwater sound; Acoustic waveguides; Computer vision; Discrete Fourier transforms; Frequency estimation; Motion analysis; Oceans; Partial differential equations; Propagation losses; Signal processing; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and Signal Processing, 1989. Conference Proceeding., IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC, Canada

Type

conf

DOI

10.1109/PACRIM.1989.48425

Filename

48425