高分辨率卫星结构-控制-光学一体化建模与微振动响应分析

文章针对高分辨率遥感卫星的微振动分析，给出了一种结构-控制-光学一体化建模方法：将微振动干扰源模型、整星结构模型、控制系统模型和光学系统模型按照实际的物理联系连接为一个整体，进而预测空间相机在轨微振动的像移响应和干扰源到像移的传递特性。以某遥感卫星为例，将其微振动下的像移响应和传递特性与工程中的其他处理方法的计算结果进行了对比分析。研究结果表明：一体化建模分析方法从原理上更接近卫星在轨实际工作情况，能够给出较为合理的微振动分析结果；其他工程处理方法的分析结果均与一体化建模分析方法有差异，使用时应根据设计和分析的具体目的与条件恰当选择。

Structure-control-optics integrated modeling and micro-vibration analysis for high resolution satellite

For the micro-vibration analysis of the high resolution remote sensing satellite, a structure-control-optics integrated modeling method is adopted. According to the physical relationship, the micro-vibration disturbance model, the structure model of the satellite, the control system model and the optical system model are integrated. As a result, the in-orbit image motion responses of the space camera under a micro-vibration, as well as the transfer characteristics from the disturbance to the image motion can be predicted. With an example of a remote sensing satellite, the image motion responses and the transfer characteristics of the micro-vibration disturbance are analyzed and compared with those obtained by other methods used in engineering. It is demonstrated that the integrated modeling and analysis method is closer to the in-orbit situation in terms of its principle and the prediction of the micro-vibration responses is reasonable. There are some differences between this method and other methods used in engineering, which should be appropriately selected according to the purposes and conditions of the design and the application.