OCEAN ACOUSTIC PROPAGATION MODELLING
The core of the group 's activities is the development of mathematical models that simulate the phenomena of acoustic wave propagation in the sea environment. These models solve boundary value problems in unbounded domains based on the wave equation, the Helmoltz equation, and parabolic approximations of the latter. Special attention is paid for the correct modelling of the sound propagation in the sea bed. The methods and the computer codes developed can be applied in 2 or 3 dimensions, as well as in forizontally stratified or horizontally varying environments relative to the properties of the water column and the bottom. The development of efficient methods for the calculation of broadband acoustic fields and associated time-frequency analysis belong to the activities of the group.
IACM contributions / interests
- Parabolic approximation
- Non-local boundary conditions (impedance)
- Propagation modelling based on normal/coupled-mode theory
- Broadband propagation / propagation in the time domain
- Time-frequency analysis
- High-frequency asymptotics