Inter-agency comparison of TanDEM-X baseline solutions |
| |
Authors: | A. Jä ggi,O. Montenbruck,Y. Moon,M. Wermuth,R. Kö nig,G. Michalak,H. Bock,D. Bodenmann |
| |
Affiliation: | 1. Astronomical Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland;2. Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen, Germany;3. German Research Centre for Geosciences, Potsdam, Germany |
| |
Abstract: | TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) is the first Synthetic Aperture Radar (SAR) mission using close formation flying for bistatic SAR interferometry. The primary goal of the mission is to generate a global digital elevation model (DEM) with 2 m height precision and 10 m ground resolution from the configurable SAR interferometer with space baselines of a few hundred meters. As a key mission requirement for the interferometric SAR processing, the relative position, or baseline vector, of the two satellites must be determined with an accuracy of 1 mm (1D RMS) from GPS measurements collected by the onboard receivers. The operational baseline products for the TanDEM-X mission are routinely generated by the German Research Center for Geosciences (GFZ) and the German Space Operations Center (DLR/GSOC) using different software packages (EPOS/BSW, GHOST) and analysis strategies. For a further independent performance assessment, TanDEM-X baseline solutions are generated at the Astronomical Institute of the University of Bern (AIUB) on a best effort basis using the Bernese Software (BSW). |
| |
Keywords: | TanDEM-X Precise baseline determination (PBD) Inter-agency baseline comparison Ambiguity fixing GPS SAR |
本文献已被 ScienceDirect 等数据库收录! |
|