一种星上微振动引起像移量的测量方法  

Method of Measuring Image Offset Caused by Onboard Micro-vibration

作　　者：赵鸿志[1] 黄菁菁[2] 曹启鹏[1] 韩杏子[1] 

机构地区：[1]航天东方红卫星有限公司,北京100094 [2]中国科学院遥感与数字地球研究所,北京100101

出　　处：《航天器工程》2014年第5期35-40,共6页Spacecraft Engineering

基　　金：国家自然科学基金(41001273)

摘　　要：基于多色CCD各谱段分时成像的特点,提出一种高分辨率光学遥感卫星星上微振动引起像移量的测量方法。该方法依据多色CCD不同时刻获取地面同一景物的不同谱段图像间的匹配像移量差异,确定星上微振动引起的像移量。研究实例证明了文章提出方法的可行性,结果表明,频率越低,微振动引起的像移量越大,因此,应对高分辨率光学遥感卫星的微振动,尤其是低频部分进行有效抑制。According to the characteristics of multicolor CCD,which may acquire images in different time for different bands,this paper presents a method of measuring image offset caused by onboard micro-vibration for high-resolution optical remote-sensing satellite.The image offset caused by onboard micro-vibration is determined by using the image offset difference between registered images of the same targets in different time for different bands.It is concluded that the proposed method is reasonable and practical.And the result shows that lower frequency microvibration causes more offset of image.Therefore,it is necessary to eliminate micro-vibration,especially the low frequency micro-vibration.

关 键 词：多色CCD相机 星上微振动 像移量 图像质量 

分 类 号：V474[航空宇航科学与技术—飞行器设计]