Ocean acoustic environment: physical and biological properties; stratification and sound speed variation; propagation paths in deep, shallow and range dependent environments; attenuation, transmission loss, bottom loss; ambient noise; surface, bottom and volume scattering.
Wave propagation: Wave equation for homogeneous media, nonhomogeneous and layered media and wave guides; Helmholtz equation; ray methods, caustic and shadow zones;
wavenumber integration and normal mode methods; parabolic equation and coupled mode approach.
Scattering and radiation: Scattering of underwater sound by rigid and elastic objects, bubbles, elements of a rough surface and biomass; theoretical solutions, computational schemes and experimental methods; Radiation of sound noise by ships, under-water vehicles and offshore platforms; underwater noise; scattering of ambient noise.
Applications: Sourcereceiver problems; pulse transmission and acoustical tomography; remote sensing by backscattering, sonar principles and their use.
- Teacher: ananthakrishnan Ananthakrishnan P