Results 241 to 250 of about 596,957 (302)

Full wave-field reflection coefficient inversion

The Journal of the Acoustical Society of America, 2007
This paper develops a Bayesian inversion for recovering multilayer geoacoustic (velocity, density, attenuation) profiles from a full wave-field (spherical-wave) seabed reflection response. The reflection data originate from acoustic time series windowed for a single bottom interaction, which are processed to yield reflection coefficient data as a ...
Jan, Dettmer, Stan E, Dosso, Charles W, Holland   +2 more
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A reflection coefficient bridge

IEEE Transactions on Instrumentation and Measurement, 1987
The design of an unbalanced Wheatstone bridge is presented. The bridge measures the reflection coefficient of unknown impedances relative to an arbitrary reference level. A experimental unit was designed for a 25-Ω reference level. It measured high isolation with a 25-Ω load; the magnitude of the reflection coefficient with a short-circuit load ...
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Scaling of particle reflection coefficients

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1992
Abstract Previously published data on particle backscattering from surfaces under normal incidence conditions is reviewed in order to arrive at a general scaling relationship in terms of projectile energy and the masses of the colliding species. A single empirical formula is proposed which, with suitable coefficients, represents the available data ...
E.W. Thomas, R.K. Janev, J. Smith
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Subsets of reflection coefficients

ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Subset models of autoregressive reflection coefficients have a number of non-zero reflections in the subset while the other reflections are zero. Speech analysis and seismic exploration are areas of applications where true subset processes may be found.
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Some remarks about reflection coefficient.

Archivio di fisiologia, 1973
Biological membranes selectivity for solutes is measured by the reflection coefficient σ, defined as σ = (ΔP/Δπ)Jv=0 where ΔP is the hydrostatic pressure difference required to zero the volumetric flow Jv driven by an osmotic pressure difference Δπ of the considered solute.
G. Monticelli, F. Celentano, G. Torelli
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Sea Surface Reflection Coefficient Estimation

SEG Technical Program Expanded Abstracts 2013, 2013
Sea surface reflection coefficient estimates are obtained from imaged sea surfaces by applying an imaging technique that is based on decomposed wavefields acquired by dual-sensor towed streamers. The accuracy of this technique in the case of imaging has been demonstrated employing controlled data scattered by realistic timevarying rough sea surfaces (e.
Okwudili C. Orji, Walter Sollner, Leiv J. Gelius   +2 more
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Absolute reflection coefficients from deep Seismic reflections

Tectonophysics, 1990
Abstract Many deep Seismic reflection profiles show bright sub-horizontal layered reflections in the lower continental crust. Accurate estimates are obtained for normal incidence reflection coefficients for the brightest of these reflections by using a marine Seismic acquisition system that has been calibrated using deep-water sea-bottom multiples ...
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Attenuation and reflection coefficient nomogram

Ultrasonics, 1974
Abstract A nomogram is described for the determination of the sound pressure reflection coefficient R and the round-trip loss 2 α L when using the pulse-echo buffer rod technique.
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Reflection, Reflection Coefficient and Some Useful Applications

IETE Journal of Education, 1964
(1964). Reflection, Reflection Coefficient and Some Useful Applications. IETE Journal of Education: Vol. 5, No. 2, pp. 116-126.
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Reflection Coefficients and Poles

1990
Let V(x) be a real Schrodinger potential with no bound-states. Deift and Trubowitz [1] showed that, if V(x) satisfies the condition $$\int_{{ - \infty }}^{\infty } {dx[1 + {{x}^{2}}]|V(x)| < \infty ,}$$ (1) then solutions of the Schrodinger equation, $$\left\{ { - {{{\left[ {\frac{d}{{dx}}} \right]}}^{2}} + V(x)} \right\}\psi \pm (x ...
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