TanDEM-X First DEM Acquisition: A Crossing Orbit Experiment

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 interferomet...

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Bibliographic Details
Published in:IEEE Geoscience and Remote Sensing Letters
Main Authors: Lopez-Dekker, Paco, Prats, Pau, De Zan, Francesco, Schulze, Daniel, Krieger, Gerhard, Moreira, Alberto
Format: Other Non-Article Part of Journal/Newspaper
Language:English
Published: IEEE - Institute of Electrical and Electronics Engineers 2011
Subjects:
Radarkonzepte
SAR-Technologie
October Revolution Island
Online Access:https://elib.dlr.de/69942/
https://elib.dlr.de/69942/1/DePrZaScKrMo_2011.pdf
Description
Summary: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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