Title :
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
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;
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
DOI :
10.1109/IGARSS.2009.5417462
