lect_161 - Computational Ocean Acoustics 13.853 Ray Tracing...

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COMPUTATIONAL OCEAN ACOUSTICS 13.853 Lecture 16 Computational Ocean Acoustics • Ray Tracing • Wavenumber Integration • Normal Modes • Parabolic Equation
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COMPUTATIONAL OCEAN ACOUSTICS 13.853 Lecture 16 Normal Modes • Modes for Range-Dependent Envir. – Coupled Modes (5.9) – One-way Coupled Modes – Adiabatic Modes – SEALAB Propagation Modeling Environment • Modes in 3-D Environments – Continuously coupled modes – Adiabatic Approximation – 3-D Propagation in 2-D Environments – Global Propagation
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13.853 Lecture 16 3-D Modal Modeling Framework 3-D Ocean Environment Range-Independent Sectors [See Jensen Fig 5.19b] [See Fig 5.19a in Jensen, Kuperman, Porter and Schmidt. Computational Ocean Acoustics. New York: Springer-Verlag, 2000.] Full 3-D Mode Coupling Strong Discontinuities 1. Pre-compute modes for all sectors 2. Each source-receiver combination Horizontal ray tracing, all mode combinations Local single-scattering approximation
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lect_161 - Computational Ocean Acoustics 13.853 Ray Tracing...

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