Title :
Comparison of two models for the imaging mechanism of underwater bottom topography by synthetic aperture radar
Author :
Inglada, Jordi ; Garello, René ; Ramamonjiarisoa, Alfred ; Hajji, Hafedh ; Deveaux, Martine
Author_Institution :
Dept. ITI, ENST de Bretagne, Brest, France
Abstract :
Two models for synthetic aperture radar (SAR) imaging of underwater bottom topography are compared in order to estimate the relative importance of a full modelization of SAR processing and hydrodynamic modulation. It is concluded that backscatter contrasts are better estimated when velocity bunching and azimuth smearing are taken into account, even when a simple model for the hydrodynamic modulation is used
Keywords :
bathymetry; geophysical techniques; oceanographic techniques; radar imaging; radar theory; remote sensing by radar; spaceborne radar; synthetic aperture radar; SAR; azimuth smearing; backscatter contrast; bathymetry; geophysical measurement technique; hydrodynamic modulation; model; radar imaging mechanism; radar remote sensing; radar scattering; seafloor topography; spaceborne radar; synthetic aperture radar; underwater bottom topography; velocity bunching; Azimuth; Backscatter; Digital elevation models; Equations; Hydrodynamics; Integrated circuit modeling; Radar cross section; Radar imaging; Surfaces; Synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.703788
