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TanDEM-X First DEM Acquisition: A Crossing Orbit Experiment

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6 Author(s)
Lopez-Dekker, P. ; Microwaves & Radar Inst., German Aerosp. Center, Oberpfaffenhofen, Germany ; Prats, P. ; De Zan, F. ; Schulze, D.
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This letter describes the first interferometric acquisitions and results obtained by the TerraSAR-X add-on for Digital Elevation Measurements mission. Due to the large along-track separation between the two satellites during the approaching maneuver and the Earth's rotation, useful interferometric acquisitions were only possible at high latitudes. This resulted in a crossing angle between the ground tracks whose impact was corrected by acquiring the two synthetic-aperture radar images with an opposite squint. The still very large 2-km cross-track baseline resulted in a 3.8-m interferometric height of ambiguity, producing extremely detailed images of the topography of the target area. Results acquired over the October Revolution Island, Russia, are shown and discussed.

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Geoscience and Remote Sensing Letters, IEEE  (Volume:8 ,  Issue: 5 )