摘要
设计了一种用于空间遥感卫星的高分辨率离轴三反光学系统,该系统具有大视场、长焦距、高分辨率的特点,其焦距f为1 200mm,F/#为10,水平视场角可达±2.5°、垂直视场角可达±2.5°。当卫星轨道高度为300km,传感器像元尺寸为8μm时,地元分辨率GSD可达2 m。通过对参数的多次优化,最终设计的光学系统在空间频率62.5lp/mm处全视场MTF值均大于0.3,成像效果优良,接近衍射极限。
An off-axis three-mirror reflective system is designed for high resolution space remote sensing satellite.The system has a large field of view,long focal length and high resolution.The optical system can achieve the focal length of1 200 mm,F/# of 10,the horizontal field of view of±2.5°,the vertical field of view of±2.5°.When the satellite orbit height is 300 km and the sensor pixel size is 8μm,the ground resolution GSD is up to 2 m.Through the optimization of the parameters,the final design of the optical system at the spatial frequency of 62.5 lp/mm at the full field of view MTF values are greater than 0.3.The imaging results are excellent,closing to the diffraction limit.
作者
黄晓园
黄铭烨
陈冠亮
杨俊烨
王红成
HUANG Xiao-yuan;HUANG Ming-ye;CHEN Guan-liang;YANG Jun-ye;WANG Hong-cheng(College of Electronic Engineering,Dongguan University of Technology,Dongguan 523808,Chin)
出处
《光学与光电技术》
2018年第4期75-79,共5页
Optics & Optoelectronic Technology
基金
广东省科技计划(2017A010102019)
大学生科技创新培育专项资金(攀登计划)(pdjh2017b0499)
大学生创新创业训练计划立项(201611819001)资助项目
关键词
离轴三反式光学系统
光学设计
调制函数
空间遥感
高分辨率
off-axis three-mirror re{lective system
optical design
modulation transfer function
space remote sensing
high resolution
