“高分四号”卫星凝视相机设计与验证

摘要

On December 29, 2015, GF-4 satellite, the first high resolution optical remote sensing satellite in geostationary orbit of China, was successfully launched at Xichang satellite launching center. As one of the most important optical payloads on the satellite, the staring camera made by Beijing Institute of Space Mechanics & Electricity has capability of obtaining visible light and near infrared spectrums images with 50m GSD and middle infrared spectrums images with 400m GSD. This paper introduces the GF-4 camera in the aspects of composition and operating principle, critical techniques and their implementation, and in-orbit operation and tests. The in-orbit test results are also given in the paper.%2015年12月29日，中国第一颗地球静止轨道高分辨率光学遥感卫星—“高分四号”卫星在西昌卫星发射中心成功发射，星上装载的北京空间机电研究所研制的高分辨率光学遥感凝视相机，可以获取星下点可见光近红外谱段（全色及多光谱）50m地面像元分辨率、中波红外谱段400m地面像元分辨率图像，地面覆盖超过400km´400km。文章介绍了该相机的组成及工作原理、相机的关键技术及实现情况，给出了地面测试与试验结果，对在轨运行和测试情况进行了简单介绍，列出了在轨测试的主要结论。