A robust method for selecting a high-quality interferogram subset in InSAR surface deformation analysis
Molly S Zebker,
Jingyi Chen
Abstract:The accuracy of surface deformation derived from Interferometric
Synthetic Aperture Radar (InSAR) observations depends on the quality of
the chosen interferogram subset. We present a method to select
interferogram subsets based on unwrapping errors rather than temporal
baseline thresholds. Using Sentinel-1 interferograms over the Tulare
Basin (CA), we show that tropospheric noise dominates short temporal
baseline subset solutions (with up to 2.9 cm/yr residuals at co-located
GPS sites), while decorrelation lea… Show more
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