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Interferometric synthetic aperture radar atmospheric correction: Medium Resolution Imaging Spectrometer and Advanced Synthetic Aperture Radar integration
Author(s) -
Li Zhenhong,
Fielding Eric J.,
Cross Paul,
Muller JanPeter
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl025299
Subject(s) - interferometric synthetic aperture radar , remote sensing , synthetic aperture radar , satellite , water vapor , environmental science , radar , imaging spectrometer , spectrometer , atmospheric correction , interferometry , geology , geodesy , meteorology , optics , physics , computer science , telecommunications , astronomy
Atmospheric water vapor effects represent one of the major limitations of repeat‐pass InSAR, and limit the accuracy of deformation rates derived from InSAR. The use of contemporaneous MERIS data to correct ENVISAT ASAR measurements shows a significant reduction in water vapor effects. After correction, the RMS differences between GPS and InSAR range changes in the satellite line of sight direction decreased to 0.55 cm with a reduction of up to 0.35 cm. It is also shown that it is possible to implement an extra ‘conservative’ cloud mask and obtain better water vapor corrections than that from using the official ESA cloud mask product.