航空遥感相机光学系统设计

Optical design of space remote sensing camera

地球静止轨道区域凝视成像监视的目的就是为了及时发现和生成地面目标特征和参数,光学成像遥感技术是现代对地观测的一个重要手段。通常长焦距、大视场遥感系统的光学系统设计是通过提高光学成像遥感器的质量、加长焦距、提高记录介质的分辨力、提高系统的传递函数等措施提高其性能的。介绍焦距为36 m,视场角达到0.75°的三反射式光学系统的设计过程,给出了设计结果。该系统实现了范围为90 km×90 km的瞬时对地扫描,摆动后能够对地面900 km×450 km区域实现凝视成像。

The development of aerospace science paves the way for improving earth observation and the optical imaging remote sensing technology is developing rapidly. The imaging quality can be improved by improving remote sensor quality, enlarging focal length, increasing record medium resolution, and improving optical system transfer function. A three-mirror anastigmatic optical system, whose focal length is 36 m and field angle is 0.75^o, is introduced. The system can realize instantaneous space-to-ground scanning for a range of 90 km× 90 km, and staring imaging over an area of 900 km× 450 km when the system is swinging. The result of the system design is given.