遥感卫星扰振对TDICCD相机图像影响的仿真与分析

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。

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

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.