Title :
Quality assessment of TerraSAR-X derived ground control points
Author :
Koppe, Wolfgang ; Wenzel, Ronny ; Hennig, Simon ; Janoth, Jürgen ; Hummel, Philipp ; Raggam, Hannes
Author_Institution :
Astrium Geo-Inf. Services, Infoterra GmbH, Friedrichshafen, Germany
Abstract :
The orbit accuracy of TerraSAR-X and TanDEM-X radar satellites is in the range of centimeters. This information is useful to carry out high precision surveying from space. The objective of this study is the quality assessment of ground control points (GCPs) retrieved from TerraSAR-X and TanDEM-X imagery. The focus is put on the optimized stereo constellation for the GCP retrieval procedure. GCPs are important inputs for precise orthorectification of other image sources. Depending on the input image parameters it is possible to retrieve GCPs with a 3D accuracy up to 1 m.
Keywords :
geophysical image processing; radar imaging; stereo image processing; synthetic aperture radar; 3D accuracy; GCP retrieval procedure; TanDEM-X radar satellites; TerraSAR-X derived ground control point; high precision surveying; image sources; quality assessment; stereo constellation; Accuracy; Coordinate measuring machines; Equations; Extraterrestrial measurements; Mathematical model; Satellites; Synthetic aperture radar; GCP; SAR; Stereo; TerraSAR-X;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350643
