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Proceedings Paper

Simulated rain rate effects on SAR interferograms
Author(s): A. Elmzoughi; R. Abdelfattah; Z. Belhadj
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Paper Abstract

Repeat-pass synthetic aperture radar interferometry is an important tool for measuring earth surface topography and/or surface deformations. The accuracy of the SAR interferograms is, however, affected by several source; the most important one being the atmosphere. Therefore, in order to improve the accuracy of interferometric measurements an accurate description of the atmospheric distortion is needed. In this paper we discuss influence of the rain rate on SAR interferograms. Calculations of the path delay for different rain rate intensities was made by considering a physical model for the rain drops and applying the Rayleight approximation. The calculations do not include estimations of the delay due to the melting layer of precipitations and due to the precipitating cloud above the melting layer since they could be neglected. On simulated examples of interferograms considering perfectly flat areas, we show that there is a strong increase in a propagation delay associated with rain rate and that, the rain can induce a considerable propagation delay of several centimeters.

Paper Details

Date Published:
PDF: 8 pages
Proc. SPIE 7107, Remote Sensing of Clouds and the Atmosphere XIII, 710717; doi: 10.1117/12.800342
Show Author Affiliations
A. Elmzoughi, URISA, Ecole suprieure des communications (Tunisia)
R. Abdelfattah, URISA, Ecole suprieure des communications (Tunisia)
Z. Belhadj, URISA, Ecole suprieure des communications (Tunisia)

Published in SPIE Proceedings Vol. 7107:
Remote Sensing of Clouds and the Atmosphere XIII
Richard H. Picard; Adolfo Comeron; Klaus Schäfer; Aldo Amodeo; Michiel van Weele, Editor(s)

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