Journal article
An error prediction framework for interferometric SAR data
Electronics & Signal Processing, Department of Electrical Engineering, Technical University of Denmark1
Department of Electrical Engineering, Technical University of Denmark2
Microwaves and Remote Sensing, National Space Institute, Technical University of Denmark3
National Space Institute, Technical University of Denmark4
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2008 |
| Pages: | 1600-1613 |
| ISSN: | 15580644 and 01962892 |
| Types: | Journal article |
| DOI: | 10.1109/TGRS.2008.916213 |
| ORCIDs: | Merryman Boncori, John Peter |
Atmospheric disturbances Atmospheric measurements Atmospheric modeling Calibration Digital elevation models Displacement measurement Error analysis Error correction Flevoland Italy Jacobian matrices Netherlands Rome Synthetic aperture radar Synthetic aperture radar interferometry atmospheric path length disturbance atmospheric path length error baseline calibration method baseline error calibration digital elevation model digital elevation models double difference data error prediction error standard deviation ground control points interferometric SAR data interferometric synthetic aperture radar measurements interferometry phase unwrapping error radiowave interferometry remote sensing by radar synthetic aperture radar synthetic aperture radar (SAR) systematic errors terrain displacement terrain elevation terrain mapping
