DocumentCode :
1206691
Title :
An Error Prediction Framework for Interferometric SAR Data
Author :
Mohr, Johan Jacob ; Boncori, John Peter Merryman
Author_Institution :
Dept. of Electr. Eng., Tech. Univ. of Denmark, Lyngby
Volume :
46
Issue :
6
fYear :
2008
fDate :
6/1/2008 12:00:00 AM
Firstpage :
1600
Lastpage :
1613
Abstract :
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.
Keywords :
calibration; digital elevation models; radiowave interferometry; remote sensing by radar; synthetic aperture radar; terrain mapping; Flevoland; Italy; Netherlands; Rome; atmospheric path length disturbance; atmospheric path length error; baseline calibration method; digital elevation model; double difference data; error prediction; error standard deviation; ground control points; interferometric SAR data; interferometric synthetic aperture radar measurements; phase unwrapping error; terrain displacement; terrain elevation; Atmospheric disturbances; baseline error; calibration; interferometry; phase unwrapping error; synthetic aperture radar (SAR); systematic errors;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/TGRS.2008.916213
Filename :
4505373
Link To Document :
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