Parabolic Equation Simulations of Reverberation Statistics From Non-Gaussian-Distributed Bottom Roughness
In this paper, a two-way parabolic equation (PE) method is developed for modeling rough interface reverberation. The model is employed to estimate the reverberation envelope probability density function from bottom roughness with Gaussian and exponential height distributions. For Gaussian-distribute...
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| Veröffentlicht in: | IEEE journal of oceanic engineering 2010-04, Vol.35 (2), p.199-208 |
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| creator | Lingevitch, Joseph F LePage, Kevin D |
| description | In this paper, a two-way parabolic equation (PE) method is developed for modeling rough interface reverberation. The model is employed to estimate the reverberation envelope probability density function from bottom roughness with Gaussian and exponential height distributions. For Gaussian-distributed roughness, the PE gives envelope statistics that closely conform to the expected Rayleigh distribution. However, for non-Gaussian-distributed roughness heights, heavy-tailed reverberation envelope statistics are observed. The PE simulation results are compared to the analytical model of K-distributed reverberation by Abraham and Lyons [IEEE J. Ocean. Eng., vol. 29, pp. 800-813, 2002] for discrete scatterers and to numerical predictions of the first and second moments of the reverberation intensity estimated with a coupled mode reverberation model for the multipath insonification of rough surfaces. |
| doi_str_mv | 10.1109/JOE.2010.2044054 |
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Eng., vol. 29, pp. 800-813, 2002] for discrete scatterers and to numerical predictions of the first and second moments of the reverberation intensity estimated with a coupled mode reverberation model for the multipath insonification of rough surfaces.</description><subject>Analytical models</subject><subject>Clutter</subject><subject>Computer simulation</subject><subject>Coupled modes</subject><subject>Envelopes</subject><subject>Equations</subject><subject>Gaussian distribution</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Oceans</subject><subject>parabolic equation (PE)</subject><subject>Polyethylenes</subject><subject>Predictive models</subject><subject>Probability density function</subject><subject>Rayleigh scattering</subject><subject>Reverberation</subject><subject>Roughness</subject><subject>Statistical distributions</subject><subject>Statistics</subject><issn>0364-9059</issn><issn>1558-1691</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkD1PwzAQhi0EEqWwI7FEYmBKOX_F8chHW0AVRQXmyHEdcJXErZ0g8e9xacXAdHd6nzudHoTOMYwwBnn9NB-PCMSJAGPA2QEaYM7zFGcSH6IB0IylErg8RichrAAwY0IOkH1RXpWutjoZb3rVWdcmr7bp6982JK5KFubL-NL4fdjFGjqrQzLxrkmeXZtOVR-CVW16HxNvy74zy-TWdV3MF67_-GxNCKfoqFJ1MGf7OkTvk_Hb3UM6m08f725mqaaEdqnIhBJyWeWUY04UFdxkXOa5KJeK0qqqQADXnHEuZK44MMIUlgqDJpIYregQXe3urr3b9CZ0RWODNnWtWuP6UAiWEYo5QCQv_5Er1_s2PldgICKK5CyPFOwo7V0I3lTF2ttG-e8IFVv1RVRfbNUXe_Vx5WK3Yo0xf3j8OcaS_gCNP39r</recordid><startdate>201004</startdate><enddate>201004</enddate><creator>Lingevitch, Joseph F</creator><creator>LePage, Kevin D</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Analytical models Clutter Computer simulation Coupled modes Envelopes Equations Gaussian distribution Mathematical analysis Mathematical models Oceans parabolic equation (PE) Polyethylenes Predictive models Probability density function Rayleigh scattering Reverberation Roughness Statistical distributions Statistics |
| title | Parabolic Equation Simulations of Reverberation Statistics From Non-Gaussian-Distributed Bottom Roughness |
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