GF-2 Satellite 1m/4m Camera Design and In-Orbit Commissioning

摘要

GF-2 (Gaofen-2) is the second high resolu-tion imaging satellite of China high resolution earth obser-vation system (CHEOS) and it is the first civilian high res-olution imager with Ground sample distance (GSD) under 1m in China. The two 1m/4m cameras represent a break-through in comparison with the previous GF-1 camera. Re-cent advances in small relative aperture optics system de-sign, vibration reduction, and high accuracy thermal con-trol make it possible for this camera work perfect with high resolution, lihgtweight and high image quality per-formance. The in-orbit commissioning demonstrates that the performance of the cameras meets all the design re-quirements. The components of 1m/4m camera, the novel techniques adopted and in-orbit commissioning results are illustrated.