An error prediction framework for interferometric SAR data

Publication: Research - peer-reviewJournal article – Annual report year: 2007

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Three of the major error sources in interferometric synthetic aperture radar measurements of terrain elevation and displacement are baseline errors, atmospheric path length errors, and phase unwrapping errors. In many processing schemes, these errors are calibrated out by using ground control points (GCPs) (or an external digital elevation model). In this paper, a simple framework for the prediction of error standard deviation is outlined and investigated. Inputs are GCP position, a priori GCP accuracy, baseline calibration method along with a closed-form model for the covariance of atmospheric path length disturbances, and a model for phase unwrapping errors. The procedure can be implemented as a stand-alone add-on to standard interferometric processors. It is validated by using a set of single-frame interferograms acquired over Rome, Italy, and a double difference data set over Flevoland, The Netherlands.
Original languageEnglish
JournalI E E E Transactions on Geoscience and Remote Sensing
Publication date2008
Volume46
Issue6
Pages1600-1613
ISSN0196-2892
DOIs
StatePublished

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