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

Li, Z., Pasquali, P., Cantone, A., Singleton, A., Funning, G., and Forrest, D. (2012) MERIS atmospheric water vapor correction model for wide swath interferometric synthetic aperture radar. IEEE Geoscience and Remote Sensing Letters, 9 (2). pp. 257-261. ISSN 1545-598X (doi:10.1109/LGRS.2011.2166053)

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Abstract

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 $times$ 400 km for ENVISAT Advanced Synthetic Aperture Radar (ASAR) wide swath (WS) mode versus 100 km $times$ 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.

Item Type:Article
Keywords:InSAR, ScanSAR, Wide Swath InSAR, MERIS, atmospheric correction, water vapour, Bam earthquake
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Forrest, Dr David and Li, Dr Zhenhong
Authors: Li, Z., Pasquali, P., Cantone, A., Singleton, A., Funning, G., and Forrest, D.
Subjects:G Geography. Anthropology. Recreation > GB Physical geography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QE Geology
College/School:College of Science and Engineering > School of Geographical and Earth Sciences > Geography
Research Group:Glasgow Space Geodesy Research Lab
Journal Name:IEEE Geoscience and Remote Sensing Letters
ISSN:1545-598X
ISSN (Online):1558-0571
Published Online:6 October 2011

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
513031GAS: Generic Atmosphere Solutions for radar measurementsZhenhong LiNatural Environment Research Council (NERC)NE/H001085/1School of Geographical and Earth Sciences