Title :
ERS-1/ERS-2 tandem data for digital elevation model generation
Author :
Coltelli, M. ; Fornaro, Gianfranco ; Franceschetti, G. ; Lanari, R. ; Puglisi, G. ; Sansosti, E. ; Tesauro, M.
Author_Institution :
Ist. Int. di Vulcanologia, CNR, Catania, Italy
Abstract :
The authors combine ascending and descending ERS tandem data in order to minimize the errors due to the illumination geometry in digital elevation model generation; this is carried out by using data pairs with large baselines which are less sensitive to baseline uncertainties and atmospheric effects. Phase unwrapping difficulties are overcome by means of a flattening technique based on the use of interferograms with smaller baselines
Keywords :
geophysical techniques; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); DEM; ERS-1; ERS-2; InSAR; SAR; ascending data; descending ERS tandem data; digital elevation model generation; geophysical measurement technique; illumination geometry; interferogram; land surface topography; phase unwrapping; radar remote sensing; spaceborne radar; synthetic aperture radar; tandem data; terrain mapping; Digital elevation models; Geometry; Lighting; Low pass filters; Noise reduction; Solid modeling; Surfaces; Synthetic aperture radar interferometry; Testing; Uncertainty;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.699681
