Bi- and Multi-Static SAR Missions: Potentials and Challenges

Krieger G, Fiedler H, Moreira A (2003)

Publication Type: Conference contribution

Publication year: 2003

Book Volume: CD-ROM

Conference Proceedings Title: ASAR Workshop



The performance and capabilities of bi- and multistatic spaceborne synthetic aperture radar (SAR) are analyzed. Such systems can be optimized for a broad range of applications like frequent monitoring, wide swath imaging, single-pass cross-track interferometry, along-track interferometry, resolution enhancement or radar tomography. Further potentials arises from digital beamforming on receive, which allows to gather additional information about the direction of the scattered radar echoes. This directional information can be used to suppress interferences, to improve geometric and radiometric resolution, or to increase the unambiguous swath width. Furthermore, a coherent combination of multiple receiver signals will allow for a suppression of azimuth ambiguities. For this, a reconstruction algorithm is derived, which enables a recovery of the unambiguous Doppler spectrum also in case of non-optimum receiver aperture displacements leading to a non-uniform sampling of the SAR signal. This algorithm has also a great potential for systems relying on the displaced phase center (DPC) technique, like the high resolution wide swath (HRWS) SAR or the split antenna approach in the TerraSAR-X and Radarsat II satellites.

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Krieger, G., Fiedler, H., & Moreira, A. (2003). Bi- and Multi-Static SAR Missions: Potentials and Challenges. In Agency Canadian Space (Eds.), ASAR Workshop.


Krieger, Gerhard, Hauke Fiedler, and Alberto Moreira. "Bi- and Multi-Static SAR Missions: Potentials and Challenges." Proceedings of the ASAR Workshop Ed. Agency Canadian Space, 2003.

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