“高分四号”卫星凝视相机的技术特点

发布时间：2018-06-13 08:52

本文选题：凝视相机 + 旋转滤光轮　；参考：《航天返回与遥感》2016年04期

【摘要】："高分四号"卫星凝视相机具有高时间分辨率、较高空间分辨率和较大成像幅宽的特点。它包含可见光近红外(VNIR)通道和中波红外(MWIR)通道,VNIR通道有5个谱段,MWIR通道有1个谱段,具备昼夜成像能力。相机光学系统为折反射系统,采用分色片实现VNIR与MWIR谱段分离,利用旋转滤光轮将入射VNIR辐射分成5个谱段。VNIR焦面组件采用全局电子快门CMOS面阵探测器;MWIR焦面采用HgCdTe面阵探测器,由脉冲管制冷机制冷到80K。MWIR谱段采用两个黑体进行星上定标。基于用户需求和地球静止轨道环境开展了相机与卫星平台一体化设计、光学系统力学和热学稳定性设计、微振动抑制设计、活动机构长寿命高可靠性设计。
[Abstract]:Gazing camera of Gao Fin 4 satellite has the characteristics of high time resolution, high spatial resolution and large imaging width. It consists of the visible near infrared (VNIR) channel and the medium wave infrared (MWIR) channel. There are 5 spectral bands in the MWIR channel and one band in the MWIR channel, which has the ability of imaging day and night. The camera optical system is a dioptric system, and the separation of VNIR and MWIR spectrum is realized by using color separators. The incident VNIR radiation is divided into five spectral segments by using a rotating filter wheel. The VNIR focal plane assembly uses a global electronic shutter CMOS array detector and a HgCdTe plane array detector for the MWIR focal plane. Two blackbodies are used for the on-board calibration from the pulse tube refrigerator to the 80K.MWIR spectrum. The integrated design of camera and satellite platform, the design of mechanical and thermal stability of optical system, the design of micro-vibration suppression, and the design of long life and high reliability of active mechanism are carried out based on user's demand and geostationary orbit environment.
【作者单位】：北京空间机电研究所;
【基金】：基金项目:国家重大科技专项工程
【分类号】：V445.8

【相似文献】