The ScanSAR mode allows imaging of a swath much wider than range ambiguity limits would normally allow but at the cost of degraded cross-range resolution. This degraded cross-range resolution in monostatic configuration can be enhanced in the case of a bistatic configuration with a receiver close to the imaged area by exploiting the sidelobe emissions of the beams illuminating the adjacent subswaths. In this paper, we will assess the feasibility of enhancing the cross-range resolution in ScanSAR modes of spaceborne transmitters and evaluate the impact on the revisit time. A preliminary analysis of the performance of the method on the novel ScanSAR mode, TOPSAR, is provided. (6 pages)
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Kubica et al. (2012) studied this question.
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