Coastal oceanic environments or areas near continental slopes are subject to significant variations. Acoustic impact studies in such environments require the use of realistic simulators for the environment as well as 3D or 4D acoustic propagation.
This general issue raises numerous underlying challenges, such as the representation of the environment, antennas, noise sources, ambient noise, and graphical representations of fields.
To address this need, Aristè developed the software STRIDENT, a 3D and 4D tool for acoustic impact studies.
STRIDENT offers a wide range of possibilities regarding:
- the representation of the evolving environment in terms of speed (possible addition of mesoscale oceanographic phenomena to the global bathycelerimetric field), bathymetry, seabed characteristics (homogeneous bi-layer elastic seabeds by zone with variable thickness), and sea surface roughness,
- the representation of emission and reception antennas,
- the presence of targets in the environment on which waves reflect,
- the control and visualization of environmental parameters, antennas, and targets,
- the calculation of the acoustic field in a theoretical or georeferenced environment using rectilinear projection on a tangent plane,
- the calculation of rays emerging from sources and reflected by the surrounding environment,
- the calculation of the field in frequency and time domains,
- the calculation of Doppler effects,
- the graphical representation of results.
