Mitigating atmospheric noise for InSAR using a high resolution weather model

Details Mitigating atmospheric noise for InSAR using a high resolution weather model Mitigating atmospheric noise for InSAR using a high resolution weather model

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3316304f&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 16, CiteID L16304

Physics

15

Geodesy And Gravity: Tectonic Deformation (6924), Geodesy And Gravity: Satellite Geodesy: Technical Issues (6994, 7969), Volcanology: Remote Sensing Of Volcanoes

Scientific paper

A high resolution weather model is used to predict atmospheric delays for the acquisition times of synthetic aperture radar images over Hawaii. Refraction of the radar by water vapor in the atmosphere in Hawaii leads to apparent ground-motions with wavelengths and magnitudes similar to the actual ground motions generated by tectonic and volcanic processes. We examine the potential for a weather model to help characterize the atmospheric component in InSAR scenes and find that in the best cases it models the observed delays well, reducing the variance at wavelengths of 30 km and greater by ~60%, while even in the worst cases it provides an independent means of quantifying the expected variance in the image due to the atmosphere.

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