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

Volume

4

fYear

1998

fDate

6-10 Jul 1998

Firstpage

2207

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International

Conference_Location

Seattle, WA

Print_ISBN

0-7803-4403-0

Type

conf

DOI

10.1109/IGARSS.1998.703788

Filename

703788