Inverse scattering in waveguides: The research in this area focuses on the reconstruction of velocity inhomogeneities from point source data for the wave equation, and on the study of global uniqueness for the reconstruction of the refraction index from the DtN map for the Helmholtz equation, on complex geometric optics for waveguides as well as on the reconstruction of hard obstacles in homogeneous wave guides. Inverse problems for non-homogeneous acoustic and elastic waveguides are studied with new imaging functionals such as quantum fidelity and Loschmidt echo, by exploiting aspects of chaotic ray dynamics.
Ambient noise: The group is active in the modelling of shipping noise since the late 1980s. In 2015 it developed an operational system for real-time prediction of shipping noise in the Eastern Mediterranean Sea using real-time AIS data and wave propagation modeling – that system provides hourly predictions of noise distribution over the whole basin at different depths. The group has also developed autonomous noise recorders that can be used for ambient noise monitoring in the framework of the MSFD (EU Marine strategy framework directive. In addition, the group works on the spatial coherence of ambient noise field, in connection with passive tomography relying on cross-correlation of the noise field at different locations and the emergence of the Green’s function.
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A. ONGOING PROJECTS
B. COMPLETED PROJECTS
For any information regarding the group please contact:
Wave Propagation Group
Institute of Applied and Computational Mathematics
Foundation for Research and Technology - Hellas
Nikolaou Plastira 100, Vassilika Vouton,
GR 700 13 Heraklion, Crete
Tel: +30 2810 391800
Tel.: +30 2810 391805