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Proceedings Paper

Mapping temporal evolution of water vapour in troposphere by interferometric SAR data
Author(s): Pedro Mateus; Giovanni Nico; João Catalão
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Paper Abstract

A methodology is presented to derive a time series of Precipitable Water Vapour (PWV) maps from interferometric Synthetic Aperture Radar (SAR) data. Generally, information on PWV spatial distribution provided by SAR interferomeetry (InSAR), even if characterized by a high spatial resolution, is updated with a temporal frequency depending the satellite revisiting cycle of the InSAR sensor. The methodology is based on the use of independent GPS measurements of PWV to set the unknown bias resulting from the unwrapping process in each unwrapped interferometric phase. The main advantage of this methodology is that calibrated PWV maps can be derived from each stack of SAR interferograms. This allows the merging of PWV time series obtained over the same area by different SAR sensors and along different satellite orbits. As a result, the updating frequency is reduced from the satellite revisitng cycle to a few days.

Paper Details

Date Published: 26 October 2010
PDF: 9 pages
Proc. SPIE 7827, Remote Sensing of Clouds and the Atmosphere XV, 782712 (26 October 2010); doi: 10.1117/12.864727
Show Author Affiliations
Pedro Mateus, Univ. of Lisbon (Portugal)
Giovanni Nico, Univ. of Lisbon (Portugal)
João Catalão, Univ. of Lisbon (Portugal)

Published in SPIE Proceedings Vol. 7827:
Remote Sensing of Clouds and the Atmosphere XV
Richard H. Picard; Klaus Schäfer; Adolfo Comeron; Michiel van Weele, Editor(s)

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