This paper reports about the status of the actual performance prediction and some selected investigations within the system engineering for the TerraSAR-X satellite, which will be implemented in a Public-Private-Partnership between the German Aerospace Center (DLR) and the ASTRIUM GmbH. The main sensor parameters and modes of operation are summarized. Image simulations based on X-band data from the E-SAR sensor of DLR give an impression on the expected image quality with respect to geometric and radiometric resolution. Different realization possibilities for the dual polarization mode are investigated and the actual baseline for this mode is described. The potential of two independent receiving channels is analyzed and the paper reports about possible additional features as investigated so far.
This paper presents a new formulation of the Extended Chirp Scaling algorithm (ECS)1+/, suitable for the processing of data from the forward looking SAR system SIREV (Sector Imaging Radar for Enhanced Vision. This system is presently under development at the German Aerospace Center (DLR). It is shown that the SIREV data acquisition has several similarities with the ScanSAR mode of operation. Also the differences between SIREV and ScanSAR mode are analyzed. According to these differences, the ECS for ScanSAR has been modified. The modified equations of the ECS are presented and several simulation results demonstrate the good performance of the ECS for SIREV processing. The SIREV project at DLR was partially funded by STN Atlas Elektronik, Bremen. This company also holds the SIREV license rights.
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