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MERIS atmospheric water vapor correction model for wide swath interferometric synthetic aperture radar

Lookup NU author(s): Professor Zhenhong Li


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A major source of error for repeat-pass interferometric synthetic aperture radar is the phase delay in radio signal propagation through the atmosphere, particularly the part due to tropospheric water vapor. These effects become more significant for ScanSAR observations due to their wider coverage (e.g., 400 km × 400 km for ENVISAT Advanced Synthetic Aperture Radar (ASAR) wide swath (WS) mode versus 100 km × 100 km for ASAR image mode). In this letter, we demonstrate for the first time that a Medium Resolution Imaging Spectrometer water vapor correction model can significantly reduce atmospheric water vapor effects on ASAR WS interferograms, with the phase variation in non-deforming areas decreasing from 3.8 cm before correction to 0.4 cm after correction.

Publication metadata

Author(s): Li Z, Pasquali P, Cantone A, Singleton A, Funning G, Forrest D

Publication type: Article

Publication status: Published

Journal: IEEE Geoscience and Remote Sensing Letters

Year: 2012

Volume: 9

Issue: 2

Pages: 257-261

Print publication date: 06/10/2011

ISSN (print): 1545-598X

ISSN (electronic): 1558-0571

Publisher: IEEE


DOI: 10.1109/LGRS.2011.2166053


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