SAR tomography from bistatic single-pass interferometers

In this work we discuss the differences between SAR tomographic analyses produced by direct 3D focusing, which we refer to as coherent tomography, and by processing simultaneous interferometric pairs collected in different passes, which we refer to as incoherent tomography. While the application of coherent tomography using space-borne sensors is often hindered by temporal decorrelation, incoherent SAR tomography appears to be a viable solution upon the condition that simultaneous InSAR pairs are available, which is possible by using bistatic SAR systems. For this reason, this paper is focused on assessing the capabilities of incoherent tomography, and on discussing the implications for bistatic SAR systems. Examples are shown based on simulated SAOCOM-CS data.

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