微振动对高轨(GEO)遥感卫星图像质量的影响  

Influence of micro-vibration on the image quality of a GEO remote sensor

作　　者：于登云[1] 练敏隆[2] 周峰[2] 白绍竣[2] 鲁之君 Dengyun YU;Minlong LIAN;Feng ZHOU;Shaojun BAI;Zhijun LU(China Aerospace Science and Technology Corporation,Beijing 100048,China;Beijing Institute of Space Mechanics and Electricity,Beijing 100094,China)

机构地区：[1]中国航天科技集团公司,北京100048 [2]北京空间机电研究所,北京100094

出　　处：《中国科学：信息科学》2019年第1期74-86,共13页Scientia Sinica(Informationis)

摘　　要：高分四号(GF-4)卫星是中国首颗地球同步轨道高分辨率光学遥感卫星.由于地球同步轨道的高度是典型太阳同步轨道的70倍左右,因此,地球同步轨道光学遥感卫星对于星上微振动环境提出了更高的要求,对微振动幅值的要求相比于低轨卫星要小近两个数量级.本文在对动量轮、制冷机等典型星上扰振源特性进行研究的基础上,针对地球同步轨道可见红外一体化光学遥感卫星,建立了光机结构与微振动的耦合集成仿真模型;提出了基于结构优化以及减振和隔振相结合的微振动抑制方法,在国内首次实现了地球同步轨道高分辨率光学遥感器在轨微振动的有效抑制,为GF-4光学遥感卫星在轨获取优异图像奠定了基础.GF-4 satellite is the first geosynchronous orbit high-resolution optical remote sensing satellite in China. Given that a geosynchronous orbit is 70 times as high as a sun-synchronous orbit, the geosynchronous optical remote sensing satellite has a stringent requirement of micro-vibration, which is almost two orders of magnitude smaller than that a of low-orbit satellite. On the basis of research on the characteristics of onboard disturbance sources, such as the momentum wheel and cryocooler, an integrated model of opto-mechanical and micro-vibration is first developed for geosynchronous visible and infrared integrated satellite in this paper. A micro-vibration suppression method based on structural optimization, vibration reduction, and vibration isolation is proposed, which has been proved to effectively suppress the in-orbit micro-vibration of the geosynchronous highresolution optical remote sensor and lays the foundation for GF-4 to obtain excellent images.

关 键 词：微振动 地球同步轨道 隔振 光机集成分析 成像质量 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计]