Copernicus Sentinel-1 Next Generation Mission: Enhanced C-Band Data Continuity and Novel Imaging Capabilities

This paper addresses the planned Copernicus Sentinel-1 Next Generation (NG) mission, which will provide enhanced C-band data continuity novel imaging capabilities beyond the next decade (2030) in support of operational Copernicus services that are routinely using Sentinel-1 data. We discuss potential SAR system concepts and their launcher compatibility along with key SAR instrument design parameters and their envisaged performance enhancements.In this context, we consider novel imaging capabilities in view of addressing challenging mission requirements, and existing and evolving applications.Furthermore, we consider modular and incremental observation concepts, involving NewSpace smallSat SAR constellations to complement Sentinel-1 NG C-band SAR acquisitions. In addition, we discuss the planned embarkation of the Automatic Identification System (AIS) payload in support of maritime surveillance.