Assessment on Linearity Errors in Detectors for Interferometric Radiometers

Author

Torres, F. ; Duffo, N. ; Gonzalez-Haro, C. ; Vilaseca, R. ; Sagués, Ll ; Martín-Neira, M.

Author_Institution

Remote Sensing Lab., Univ. Politec. de Catalunya, Barcelona

Volume

2

fYear

2008

fDate

7-11 July 2008

Abstract

The performance of the power detectors used to denormalize the digital correlations in interferometric radiometers is degraded due to the non-linear behavior of the diode response. This work presents a comprehensive analysis of the impact of detector non-linearity and related correction techniques in the performance of the MIRAS (Microwave Imaging Radiometer with Aperture Synthesis) instrument, which is the single payload of the European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS) mission.

Keywords

geophysical equipment; radiometers; radiowave interferometry; ESA SMOS mission; European Space Agency; MIRAS instrument; Microwave Imaging Radiometer with Aperture Synthesis; Soil Moisture and Ocean Salinity mission; digital correlation; interferometric radiometers; linearity errors; power detectors; Apertures; Degradation; Detectors; Diodes; Image analysis; Linearity; Microwave imaging; Microwave theory and techniques; Performance analysis; Radiometers; Radiometer; detector; interferometric; linearity;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International

Conference_Location

Boston, MA

Print_ISBN

978-1-4244-2807-6

Electronic_ISBN

978-1-4244-2808-3

Type

conf

DOI

10.1109/IGARSS.2008.4779207

Filename

4779207