The capabilities of the current concept for a post-Sentinel-1 High ResolutionWide Swath (HRWS)C-band SAR system as discussed. Product-level performance analysis are given for two example applications (large scale deformation and ship detection), showing the clear improvement with respect to Sentinel-1 and exposing some of the trade-offs associated to the choice of operating mode.

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This paper presents an initial analysis of the possibilities for velocity and acceleration measurement with the Bi-Directional SAR imaging mode (BiDi). It comprises single satellite single path acquisitions as well as a constellation of two satellites. The translational velocity components into azimuth and range directions are simulated. A BiDi approach for measuring the azimuth velocity from one satellite with one receiving channel is proposed. Image examples acquired with the TerraSAR-X (TSX) and TanDEM-X (TDX) satellites show velocity and acceleration effects on ships and the proposed BiDi velocity approach is verified. Interferometric fringes were observed on anchoring ships. A first approach into the understanding of rotational effects was achieved by simulation of rotational fringes.@en