Bistatic airborne/spaceborne hybrid experiment: basic considerations

U. Gebhardt; O. Loffeld; H. Nies; S. Knedlik; J. Ender

doi:10.1117/12.627568

21 October 2005 Bistatic airborne/spaceborne hybrid experiment: basic considerations

U. Gebhardt, O. Loffeld, H. Nies, S. Knedlik, J. Ender

Proceedings Volume 5978, Sensors, Systems, and Next-Generation Satellites IX; 59781M (2005) https://doi.org/10.1117/12.627568
Event: SPIE Remote Sensing, 2005, Bruges, Belgium

Abstract

Collecting data using different sensors mounted on different platforms is the challenge of multisensorics. Applications in Synthetic Aperture Radar (SAR) normally lead to extreme bi- or multistatic constellations in the multisensorial case. This paper describes basic considerations concerning the geometry, especially the antenna steering for a bistatic SAR experiment. Using the TerraSAR-X as a transmitter and a SAR system mounted on a plane as a receiver we want to record experimental raw data for further processing. Because of the high difference between the velocity of the transmitter platform and that of the receiver platform relative to a point target, stripmap mode is not useful in this case. By operating the transmitter in sliding spotlight or spotlight mode and using antenna steering to provide footprint chasing on the side of the receiving system, a useful scene extension in azimuth can be achieved. This is of course at the cost of a shorter time interval in which the point target is both illuminated by the transmitter and seen by the receiver. First simulations of a point target response will show that nevertheless we can expect a useful Doppler bandwidth and thus an adequate resolution in azimuth.

Citation Download Citation

U. Gebhardt, O. Loffeld, H. Nies, S. Knedlik, and J. Ender "Bistatic airborne/spaceborne hybrid experiment: basic considerations", Proc. SPIE 5978, Sensors, Systems, and Next-Generation Satellites IX, 59781M (21 October 2005); https://doi.org/10.1117/12.627568

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