遥感卫星扰振对TDICCD相机图像影响的仿真与分析  

A Simulation and Analysis of Effect of Micro-vibration on TDICCD Camera Imaging

作　　者：安萌[1] 郭高峰[1] 王啸虎[1] 韩波[1] 

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天返回与遥感》2013年第6期57-65,共9页Spacecraft Recovery & Remote Sensing

基　　金：国家重大科技专项工程

摘　　要：随着传输型遥感卫星结构的扩大化及灵活性的增强,对图像品质产生影响的扰振越来越受到重视。当遥感卫星在轨进行成像时,相机的图像品质会由于星上活动部件的运动的影响而下降。文章从调制传递函数(Modulation Transfen Function,MTF)角度出发,对不同工况下太阳翼转动驱动机构(BAPTA)和动量轮对图像品质的影响进行了仿真和评估。同时,针对高分辨率相机成像品质影响,从动力学仿真方面对星体扰振的幅值和频率进行了有限元分析,确定了扰振源的频率和幅值。最后,根据仿真分析结果,提出了星上扰振控制方案建议。With enlarging structure and strengthening and flexibility of transmissive remote sensing satel- lite, the influence of micro-vibration disturbance on image quality becomes more and more significant. When remote sensing satellite makes imaging on orbit, a decrease of camera image quality is caused by the rotation of its moving components. The article, from the aspect of MTF evaluates and analyzes the effect of imaging dis- turbance under different working conditions on devices in AOCC subsystem on satellite, such as BAPTA and momentum wheel. In the meanwhile, from aspect of dynamic simulation, a finite element analysis is made for the camera and high resolution cameras micro-vibration disturbance amplitude and frequency and their values are determined aspect of kinetics. Lastly, for improving image quality which may be influenced by satellite dis- turbance at different working status,the article provides several appropriate solutions for disturbance control on board.

关 键 词：扰振 图像品质 调制传递函数 有限元分析 遥感卫星 

分 类 号：P231[天文地球—摄影测量与遥感]