NDLI: Insar tropospheric delay mitigation in the Tibetan Plateau using GPS radio occultation observations and NCEP data

Content Provider	IEEE Xplore Digital Library
Author	Liang Chang Shuanggen Jin
Copyright Year	2012
Description	Author affiliation: Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030, China (Liang Chang; Shuanggen Jin)
Abstract	Over the last two decades, the repeated Interferometric Synthetic Aperture Radar (InSAR) has proven to be useful for accurate topographic mapping and ground-surface motion monitoring. However, atmospheric delay variations are one of main errors in SAR interferograms. Since the GPS stations are sparse and the water vapor product of multispectral sensors is sensitive to the presence of clouds in the Tibetan Plateau (TP), the water vapor delay distribution maps are estimated by integrating GPS Radio occultation (RO) observations and National Centers for Environmental Prediction (NCEP) data, which are used to mitigate the atmospheric phase delays in SAR interferograms. Results shows that GPS RO inferred wet delay together with NCEP model can generate more detailed wet delay distribution maps, especially in remote regions, which would be helpful to mitigate the InSAR tropospheric delay effectively.
Starting Page	7519
Ending Page	7522
File Size	978808
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6351892
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay Global Positioning System Atmospheric modeling Synthetic aperture radar Satellites Atmospheric measurements Refractive index NCEP InSAR atmospheric mitigation radio occultation
Content Type	Text
Resource Type	Article

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