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- W2055132356 abstract "Extending David Weston’s notion of ray invariants and flux it is possible to derive closed-form solutions for two-way propagation and reverberation in range-dependent ducts. In particular, there is interesting and sometimes surprising behavior when the propagation obeys ‘‘mode-stripping’’ (the high angles are preferentially attenuated by bottom losses) while the scattering obeys Lambert’s Law (high angles are preferentially backscattered). There is a regime where reverberation and target follow the same range law, postponing ‘‘reverberation-limiting’’ indefinitely! From the experimental and databasing point of view it is therefore extremely important to know whether Lambert’s Law is actually obeyed in practice. These issues and their implications for signal-to-background are addressed. The formulas allow for range-dependent environments and the transition from mode-stripping to single mode propagation at long range. A modified version for range-independent environments includes the effects of refraction on reverberation and signal-to-background. While these formulas cannot compete with numerical calculations in terms of detail, they show at a glance the dependence on such parameters as bathymetry, critical angle, bottom loss (within the critical angle). Here, the behavior is illustrated graphically and compared with a numerical model, SUPREMO." @default.
- W2055132356 created "2016-06-24" @default.
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- W2055132356 date "2002-10-25" @default.
- W2055132356 modified "2023-09-25" @default.
- W2055132356 title "Formulas for signal and reverberation with mode‐stripping and Lambert’s law" @default.
- W2055132356 doi "https://doi.org/10.1121/1.4808606" @default.
- W2055132356 hasPublicationYear "2002" @default.
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