Conference Paper

First bistatic spaceborne SAR experiments with TanDEM-X

Microwaves & Radar Inst., German Aerosp. Center (DLR), Oberpfaffenhofen, Germany
DOI: 10.1109/LGRS.2011.2158984 Conference: IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Source: DLR


TanDEM-X is a high-resolution interferometric mission with the main goal of providing a global and unprecedentedly accurate digital elevation model (DEM) of the Earth surface by means of single-pass X-band SAR interferometry. De spite its usual quasi-monostatic configuration, TanDEM-X is the first genuinely bistatic SAR system in space. During its monostatic commissioning phase, the system has been mainly operated in pursuit monostatic mode. However, some pioneering bistatic SAR experiments with both satellites commanded in non-nominal modes have been conducted with the main purpose of testing the performance of both space and ground segments in very demanding scenarios. In particular, this paper reports about the first bistatic acquisition and the first single-pass interferometric (mono/bistatic) acquisition with TanDEM-X. Even in the absence of essential synchronisation and calibration information, bistatic images and interferograms with similar quality to pursuit monostatic have been obtained.

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Available from: Pau Prats-Iraola, Feb 23, 2014
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    • "not only because of the impressive geometric and radiometric accuracy of the calibrated products [1], [2] but also because the TSX satellite has become the perfect test-bed for future SAR mission concepts owing to its flexible commanding and operation. TSX has demonstrated for the first time in space several innovative modes like the TOPS mode [3]–[5], spaceborne bistatic imaging (together with its twin satellite, TanDEM-X) [6], bidirectional SAR imaging [7], or digital beamforming [8]. One of the last milestones achieved with the TSX satellite has been the acquisition of staring spotlight (ST) data. "
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