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Summary of Proposal MTH0572

TitleData Acquisition and Bistatic Focussing Using a Stationary Receiver
Investigator Nies, Holger - University of Siegen, Center for Sensorsystems (ZESS)
Team MemberNo team members defined
SummaryThe main issue of our project is to acquire bistatic data in a hybrid (spaceborne/stationary airborne) configuration. As the high bandwidth illuminator the TerraSAR-X satellite is used; we intend to acquire the direct satellite signal and backscattered signal from the scene with a stationary SAR receiver, mounted on roofs of high buildings, or on bridges looking into valleys, etc. The receiver unit is being built up now and will consist of a 2 channel system with an adequate data rate and flexible PRF (Acqiris High-Speed PXI/Compact PCI Digitizer pls two channel frontend for the demodulation from X-band to video offset. In a first recording phase we need some spotlight illuminations of TerraSAR-X for verifying our system. After making our system run, we want record some high resolution data takes in the line of illumination of the transmitter, and then we will vary the receiver look direction up to the orthogonal look direction of TerraSAR-X.
For the SAR processing we have to extend our approaches, we have used for the spaceborne/airborne configuration. The focussed data will be verified on the one hand with the monostatic data of TerraSAR-X and on the other hand with reflectors, which we will implement on our calibration test site in Siegen. We plan to use reflectors of deferent shapes and sizes which should be detected as point targets in the focussed scene. The position of each reflector will be determined with differential GPS measurements, so that the accuracy of the position vectors in within cm accuracy. In the final step we generate bistatic interferograms, using the receiver on the same position and the satellite on an 11 days repeat orbit.

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