地球静止轨道遥感相机一体化设计

摘要

文章针对地球静止轨道遥感器设计需求，运用光机热集成设计的方法对相机进行了一体化设计。通过复合支撑方法实现了大口径SiC主镜的高稳定性支撑，保证了反射镜面形的稳定性；相机主体结构在兼顾双通道集成支撑与装调基础上，通过优化设计，保证了相机结构的高刚度、高稳定性；相机的隔振系统针对卫星基频进行了解耦设计，保证相机镜头的安全性；相机遮光罩通过结构及热控一体化设计，有效降低了热控功耗；相机整机力学试验及真空热试验的 MTF 测试结果表明，相机主体具有较高的稳定性。%Based on the design requirement of remote sensing camera on geosynchronous orbit satellite, this paper presents an integrated design method with full consideration of optical, thermal and mechanical requirements. A multiple-supporting method is used to realize the highly stable supporting of large aperture SiC primary mirror. By considering optical channels integration and optical calibration, an optimized structure design technology is applied to ensure that the main camera structure has enough rigidity and stability. With the frequency decoupling design between satellite and camera, the camera vibration isolation system insures the safety of optical lens. The power consumption of the thermal control is reduced effectively though the integrated thermal and structural design of sun shade. Finally, the camera successfully passes the vibration test and thermal vacuum test. The stability of the camera structure was validated by the MTF test results.