环境载荷引起的航空遥感器光机系统变形对遥感器的光学系统性能会产生严重的影响。为了评估这种影响，需要一种将结构分析和光学分析相结合的有效手段。利用光机集成分析方法，首先建立了长焦距航空遥感器的有限元模型并进行了静力学分析，针对整个航空遥感器系统分别给定航向、展向和法向的加速度载荷，仿真分析了航空遥感器在机载飞行中的变形情况，重点分析由环境载荷、支撑结构所导致的各光学元件的表面节点位移变化，并以Zernike 多项式为接口拟合各光学元件的镜面变形，将计算出的拟合系数代入光学分析软件对遥感器系统进行光机集成分析，评估指定环境载荷对该遥感器结构的光学系统性能的影响。分析结果表明，该航空遥感器在过载情况下，遥感器整体系统工作状态的光学调制传递函数在空间频率为0~62.5 cycle/mm 范围内不低于0.16，经光学核算满足成像要求。

The deformation of opto-mechanical system caused by environmental load should have a serious influence on the performance of the airborne camera. In order to evaluate this influence, an effective technique for intergrated opto-mechnical analysis is required. The finite element model of the airborne camera is established and the static analysis is accomplished. Under the given environmental loads, including heading acceleration, spanwise acceleration and normal acceleration, simulation and analysis are carried out on the deformation of the structure of airborne camera, especially on the deformation of the lens caused by environmental loads and the support structure. Zernike polynomial is used as an interface tool to fit deformed mirror surface and Zernike coefficients are substituted into optical design software for the intergrated optomechanical analysis. The influence of the given environmental loads on optical performance is evaluated. The analysis results show that under the given environmental loads the modulation transfer functions (MTF) of airborne camera′ s optical system in all fields of views are not less than 0.16 with spatial frequency from 0 to 62.5 cycle/mm, which can meet the image quality demand under the given environmental loads.