Broadband scattering from shear flows and the non-doppler remote sensing of velocity profiles

Censor, D.

doi:10.1016/0022-460x(90)90595-q

Journal of Sound and Vibration

1990

DOI: 10.1016/0022-460x(90)90595-q

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Broadband scattering from shear flows and the non-doppler remote sensing of velocity profiles

D. Censor

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1992

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Cited by 2 publications

References 33 publications

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Real and complex Doppler effects in lossy media

Censor

1992

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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The theory of the Doppler effect in the presence of lossy media and moving scatterers is investigated. Essentially two kinds of phenomena emerge, which are not distinguishable in the conventional case of lossless media. When the scatterers move uniformly, or the equation of motion involves a slowly varying velocity, it is shown that propagation in lossy media involves complex Doppler effects. The complications introduced by the received complex frequency signal are discussed. It is shown that spectrum broadening occurs, and that, in certain cases, by using judiciously chosen temporal filters, the spectral degradation of the received signal can be counteracted. The second class of phenomena is associated with periodic and harmonic motion, when the scatterer is vibrating around a fixed location. In this case the incident wave is frequency modulated by the moving scatterer, giving rise to sidebands of real frequencies.

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Real and complex Doppler effects in lossy media

Censor

1992

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Acoustic Velocity Formulation for Sources in Arbitrary Motion

2013

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Broadband scattering from shear flows and the non-doppler remote sensing of velocity profiles

Cited by 2 publications

References 33 publications

Real and complex Doppler effects in lossy media

Real and complex Doppler effects in lossy media

Acoustic Velocity Formulation for Sources in Arbitrary Motion

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