Title :
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
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;
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
DOI :
10.1109/IGARSS.2008.4779207
