Validation of radiometric models and simulated KaRIn/SWOT data based on ground and airborne acquisitions

Author

Fjørtoft, Roger ; Lalaurie, Jean-Claude ; Pourthie, Nadine ; Lion, Christine ; Gaudin, Jean-Marc ; Mallet, Alain ; Nouvel, Jean-François ; Borderies, Pierre ; Kosuth, Pascal ; Ruiz, Christian

Author_Institution

Centre Nat. d´´Etudes Spatiales (CNES), Toulouse, France

fYear

2011

fDate

24-29 July 2011

Firstpage

2685

Lastpage

2688

Abstract

The principal instrument of the wide-swath altimetry mission SWOT is KaRIn, a Ka-band interferometric SAR system operating on near-nadir swaths on both sides of the satellite track. Due to the short wavelength and particular observation geometry, there are very limited reports on the backscattering from natural surfaces. Models and simulators that cover radiometric and geometric aspects have therefore been developed. This article describes airborne acquisitions and ground measurements that are used to validate the models and simulators, and shows some preliminary results.

Keywords

data acquisition; geophysical image processing; geophysical techniques; radar imaging; radar interferometry; radiometry; synthetic aperture radar; Ka-band interferometric SAR system; airborne acquisition; backscattering model; ground measurement method; near-nadir swath analysis; radiometric model; simulated KaRIn/SWOT data; wide-swath altimetry mission SWOT; Antenna measurements; Atmospheric modeling; Extraterrestrial measurements; Land surface; Sea measurements; Sea surface; Surface topography; Altimetry; Ka-band; interferometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Conference_Location

Vancouver, BC

ISSN

2153-6996

Print_ISBN

978-1-4577-1003-2

Type

conf

DOI

10.1109/IGARSS.2011.6049756

Filename

6049756