光学遥感卫星飞轮微振动仿真和地面实验研究  

Modeling and Ground-based Experimental Jitter Researches on Earth Observation Satellite

作　　者：龚小雪 张雷[1,2,3] 宣明 GONG Xiao-xue;ZHANG Lei;XUAN Ming(Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033, China;University of Chinese Academy of Sciences, Beijing 100039, China;Chang Guang Satellite Technology Co., Ltd., Changchun 130102, China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院大学,北京100039 [3]长光卫星技术有限公司,长春130102

出　　处：《光子学报》2019年第3期132-140,共9页Acta Photonica Sinica

基　　金：国家重点研发计划(No.2016YFB0500904)~~

摘　　要：为了对光学遥感卫星中飞轮微振动带来的成像像移进行精确预估,研究了飞轮微振动对成像影响的相关机理,建立了理论分析模型,搭建了高仿真度实验测量平台.研究微振动对成像影响机理,构建从飞轮扰振特性到成像像移之间的传递函数表达式,理论证明了谐波特性和模态特性是飞轮微振动对成像像移影响的两大重要特性.搭建高仿真度的实验平台对微振动影响下的图像像移进行精确测量.对比理论模型分析所得像移和实验测量数据,分析两者结果不一致产生的原因.结果表明:理论与测量的像移结果中谐波特性非常一致,两者具有几乎一致的典型的谐波因子;模态特性在低频段具有较高一致性,中低频段误差在8%以内.In order to evaluate the jitter affection brought up by flywheel in optical satellite, this paper studies the principles in the jitter affection, promotes a theoretical analytical model and constructs a testbed with high fidelity. By studying the principles in the jitter affection, the transfer fuctions between input disturbances and output image motion are achieved, meanwhile, the harmonical and modal characteristics are proved theoretically. Secondly, a testbed with high fidelity is constructed to measure the real affected image motion. Finally, this paper compares the analytical data and test data and analyzes the reasons that brings in the differences. The results indicate that the harmonical characteristics in analytical data and test data coincide with each other well, the typical harmonic factors contained are almost the same. The modal characteristics are similar at low and medium frequencies within 8% error.

关 键 词：微振动 光学遥感卫星 地面实验 飞轮 像移 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]