Correction of spatial errors in SMOS brightness temperature images

Author

Lin, Wu ; Corbella, Ignasi ; Torres, Francesc ; Duffo, Nuria ; Martín-Neira, Manuel

Author_Institution

Remote Sensing Lab., Univ. Politec. de Catalunya (UPC), Barcelona, Spain

fYear

2011

fDate

24-29 July 2011

Firstpage

3752

Lastpage

3755

Abstract

Systematic spatial errors in SMOS brightness temperature images are successfully estimated by using a statistical analysis of measured data. A constant multiplicative mask is derived by averaging spatial errors of a large number of snapshots over the ocean. The mask has been obtained for the alias- free field of view region without the need of any geophysical model. It can be considered as part of the instrument characterization and is totally independent of the target to measure. When this mask is applied to regular SMOS brightness temperatures, the spatial artifacts are clearly reduced.

Keywords

geophysical image processing; image reconstruction; oceanographic techniques; radiometers; seawater; statistical analysis; SMOS brightness temperature images; image reconstruction error; instrument characterization; multiplicative mask; ocean snapshot; soil moisture and ocean salinity satellite; spatial error correction; statistical analysis; Antennas; Brightness temperature; Image reconstruction; Oceans; Sea measurements; Temperature measurement; Interferometric radiometry; SMOS; calibration;

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.2011.6050041

Filename

6050041