摘要
为了实现对空间碎片探测,提出了一种空间碎片多光谱探测相机光学系统,由可见光相机、长波红外相机、中波红外相机光学系统组成,三个相机共用主、次镜,在三路相机光学系统中同时加入校正组件平衡校正像差,可见光相机焦距为1 000 mm,视场为1.2°,长波红外相机焦距为-250 mm,视场为2.75°,中波红外相机焦距为-500 mm,视场为1.38°,考虑了温度对相机像质的影响,采用热膨胀性系数小的材料作为反射镜基底,分析了三个相机光学系统在空间环境下(20±5℃)温度环境下的像质变化,设计结果能满足使用要求。
In order to detect the Space debris, a multi-spectral camera for Space debris was proposed. The multi-spectral camera was consisted of visible camera, long-wave infrared （LWIR） camera and mid-wave infrared （MWIR） camera. Three cameras used the primary mirror and secondary mirror together, including correction lens in every camera in order to balance aberration. The focal length was 1 000 mm and field of view was 1.2＆#176; for visible camera, and the focal length was 250 mm and field of view was 2.75＆#176; for LWIR camera, and the focal length was 500 mm and field of view was 1.38＆#176; for MWIR camera. Some measures were taken to make sure the less degradation of MTF for thermal distortion, such as a kind of material with good thermal property as mirror substrate to reduce surface distortion. The modulation transfer function（MTF） of three cameras in condition of 20＆#177;5℃ was analyzed, which showed a good result for user′s requirement.
出处
《红外与激光工程》
EI
CSCD
北大核心
2014年第4期1188-1193,共6页
Infrared and Laser Engineering
关键词
空间碎片
交会对接
多光谱相机
space debris
rendezvous and docking
multi-spectral camera
