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InSAR datum connection using GNSS-augmented radar transponders
Abstract Deformation estimates from Interferometric Synthetic Aperture Radar (InSAR) are relative: they form a ‘free’ network referred to an arbitrary datum, e.g. by assuming a reference point in the image to be stable. However, some applications require ‘absolute’ InSAR estimates, i.e. expressed in a well-defined terrestrial reference frame, e.g. to compare InSAR results with those of other techniques. We propose a methodology based on collocated InSAR and Global Navigation Satellite System (GNSS) measurements, achieved by rigidly attaching phase-stable millimetre-precision compact active radar transponders to GNSS antennas. We demonstrate this concept through a simulated example and practical case studies in the Netherlands.
InSAR datum connection using GNSS-augmented radar transponders
Abstract Deformation estimates from Interferometric Synthetic Aperture Radar (InSAR) are relative: they form a ‘free’ network referred to an arbitrary datum, e.g. by assuming a reference point in the image to be stable. However, some applications require ‘absolute’ InSAR estimates, i.e. expressed in a well-defined terrestrial reference frame, e.g. to compare InSAR results with those of other techniques. We propose a methodology based on collocated InSAR and Global Navigation Satellite System (GNSS) measurements, achieved by rigidly attaching phase-stable millimetre-precision compact active radar transponders to GNSS antennas. We demonstrate this concept through a simulated example and practical case studies in the Netherlands.
InSAR datum connection using GNSS-augmented radar transponders
Mahapatra, Pooja (author) / der Marel, Hans van (author) / van Leijen, Freek (author) / Samiei-Esfahany, Sami (author) / Klees, Roland (author) / Hanssen, Ramon (author)
Journal of Geodesy ; 92
2017
Article (Journal)
Electronic Resource
English
InSAR datum connection using GNSS-augmented radar transponders
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