星载遥感器扫描运动控制补偿信号的生成与模拟  

On Determining Compensation Signals for Scan Motion Control of Satellite Remote Sensor

作　　者：王志刚[1] 袁建平[1] 陈士橹[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072

出　　处：《西北工业大学学报》2004年第2期236-238,共3页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金 (10 372 0 80 );陕西省自然科学基金 (2 0 0 3A0 6 )

摘　　要：研究利用星载遥感器扫描运动控制补偿提高图像质量的方法。分析了图像运动主要干扰因素及其影响 ,把干扰因素分为长周期干扰和短周期干扰 ,分别采用图像运动补偿和扫描镜扫描运动补偿来修正。针对扫描镜扫描运动补偿 ,讨论了星载扫描镜扫描运动控制和扫描运动补偿方法。基于航天动力学 ,研究了扫描运动补偿信号的生成方法。通过模拟 ,得出了姿态等因素对扫描运动的影响和定量的补偿信号。The aim of the paper is to determine compensation signals for scan motion control of satellite remote sensor. For three-axis-stabilized geostationary satellite, an equation was derived for determining the position of the ideal scan line of remote sensor. Due to unavoidable satellite attitude perturbation, the scan line of remote sensor is changed. To maintain a good image quality, the changed scan line must be returned to the ideal scan line position; to implement such return, the remote sensor angles along north-south and east-west must be adjusted. These scan line adjustments require that compensation signals of scan angles must be determined. Focusing on the typical case, we obtained simulation results of compensation signals. These results show that compensation signals are significantly large and cannot be neglected if a good image quality is to be maintained and that the east-west compensation signal is more than 2.5 times of the north-south one.

关 键 词：星载遥感器 扫描运动控制 扫描运动补偿 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]