Interferometric Performance Evaluation of Sentinel-1C and Sentinel-1D: Results from the Independent Calibration Campaign of the Commissioning Phase

Abstract

This contribution summarizes the interferometric investigations carried out during the in-orbit commissioning phase of both Sentinel-1C and Sentinel-1D satellites. The presented investigations were conducted by the DLR-HR Institute during the commissioning phase of the two spacecrafts as part of the independent calibration campaign for the Sentinel-1C and Sentinel-1D SAR systems on behalf of ESA [1]. The analyses were performed on Level-1 data processed by the IPF processor of ESA. Sentinel-1C was launched on 5 December 2024 to replace Sentinel-1B (decommissioned after suffering non-recoverable on-board failures at the end of 2021). Sentinel-1D was launched on 4 November 2025 to eventually replace Sentinel-1A.