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Authors: Bonforte, A.*
Ferretti, A.*
Prati, C.*
Puglisi, G.*
Rocca, F.*
Title: Calibration of atmospheric effects on SAR interferograms by GPS and local atmosphere models: first results
Title of journal: Journal of Atmospheric and Solar-Terrestrial Physics
Series/Report no.: vol. 63
Publisher: Elsevier
Issue Date: 2001
Keywords: SAR
Tropospheric delay
Abstract: A comparison between the ZPD (Zenith Path Delay), obtained from GPS measurements, and the expected delay, derived from models used to compensate tropospheric effects on SAR interferograms, is made. The results of the two methods are comparable, though the available data set is not large enough for a complete statistical validation of the methods. The results of this preliminary study suggest a possible integration of GPS-based ZPD data with cheap and standard meteorological data, since the estimated atmospheric component proved to be similar. Furthermore, the impact on volcanology of the effects measured by GPS, and in particular on the determination of the depth of the volcanic sources, is discussed.
Appears in Collections:04.03.09. Instruments and techniques
Papers Published / Papers in press
01.02.05. Wave propagation
04.03.08. Theory and Models
04.03.07. Satellite geodesy
04.08.06. Volcano monitoring
01.02.06. Instruments and techniques

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