Linearity characterization of detectors for interferometric radiometers

Author

González-Haro, C. ; Torres, F. ; Duffo, N. ; Corbella, I. ; Vilaseca, R. ; De Paco, P. ; Martín-Neira, M.

Author_Institution

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

Volume

4

fYear

2009

fDate

12-17 July 2009

Abstract

The performance of the power detectors used to denormalize the digital correlations in interferometric radiometers may be degraded due to the non-linear behavior of the diode response. This work presents the comparison of two methods used to characterize and correct the non-linear response of the detectors. The results are illustrated by presenting the characterization of the power detectors in the MIRAS (Microwave Imaging Radiometer with Aperture Synthesis) instrument, the single payload of the ESA-SMOS mission.

Keywords

electromagnetic wave interferometry; microwave imaging; radiometers; radiometry; ESA-SMOS mission; MIRAS instrument; Microwave Imaging Radiometer with Aperture Synthesis; detector linearity characterization; digital correlations; diode response; interferometric radiometers; nonlinear behavior; power detectors; Apertures; Circuit testing; Detectors; Instruments; Linearity; Noise level; Radiometers; Space technology; Temperature; Voltage; Radiometer; detector; interferometric; linearity;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009

Conference_Location

Cape Town

Print_ISBN

978-1-4244-3394-0

Electronic_ISBN

978-1-4244-3395-7

Type

conf

DOI

10.1109/IGARSS.2009.5417462

Filename

5417462