Title :
Atmospheric induced errors in interferometric DEM generation
Author :
Kenyi, Lado W. ; Raggam, Hannes
Author_Institution :
Inst. for Digital Image Process., Joanneum Res., Graz, Austria
Abstract :
Atmospheric error impacts on interferometric DEM generation were assessed. It was found that atmospheric effects are manifested in the InSAR data as deviations from the local topography of the terrain. Local height errors of 50 m corresponding to a phase shift of about 247° in an InSAR image pair with a baseline of 160 m was found, while the RMS error of the InSAR generated DEM was about 11 m. Error analysis indicated that atmospheric induced errors in InSAR DEMs are significantly reduced in larger baselines data
Keywords :
error analysis; geophysical signal processing; radar imaging; radiowave interferometry; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); tropospheric electromagnetic wave propagation; InSAR data; InSAR image pair; atmospheric induced errors; error analysis; interferometric DEM generation; local height errors; local topography; phase shift; terrain; Atmosphere; Digital images; Electronic mail; Equations; Error analysis; Phase shifting interferometry; Production; Surfaces; Synthetic aperture radar; Synthetic aperture radar interferometry;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516338
