Atmospheric induced errors in interferometric DEM generation

Atmospheric induced errors in interferometric DEM generation

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/spl deg/ in an InSAR image...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kenyi, L.W., Raggam, H.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Atmosphere
Digital images
Electronic mail
Equations
Error analysis
Phase shifting interferometry
Production
Surfaces
Synthetic aperture radar
Synthetic aperture radar interferometry
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Beschreibung
Zusammenfassung: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/spl deg/ 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.
DOI:10.1109/IGARSS.1996.516338