CAJ | 학술논문

本文详细介绍了一种基于卫星平台的对地观测高分辨率空间 TDICCD 相机调焦控制系统的设计与实现。针对相机轨道标称值为644.6 km 的太阳同步轨道，为实现对地全色成像2 m 分辨率和多光谱成像8 m 分辨率，推扫成像不小于100 km 的地面覆盖宽度要求，采用8片 TDICCD 高精度交错拼接技术获得高分辨率相机焦平面，以实现对地推扫成像高分辨率和宽覆盖的要求。首先，介绍高分辨率 TDICCD 相机的离轴光学系统设计；然后，介绍相机调焦系统组成和TDICCD 长焦平面拼接技术；最后，对相机调焦系统进行调焦精度测试，根据测试数据分析出相机调焦精度并与理论设计值进行比较分析，调焦，精度测试结果为±7.2μm（3σ），满足高分辨率 TDICCD 相机在轨成像需要的高精度调焦要求。
본문상세개소료일충기우위성평태적대지관측고분변솔공간 TDICCD 상궤조초공제계통적설계여실현。침대상궤궤도표칭치위644.6 km 적태양동보궤도，위실현대지전색성상2 m 분변솔화다광보성상8 m 분변솔，추소성상불소우100 km 적지면복개관도요구，채용8편 TDICCD 고정도교착병접기술획득고분변솔상궤초평면，이실현대지추소성상고분변솔화관복개적요구。수선，개소고분변솔 TDICCD 상궤적리축광학계통설계；연후，개소상궤조초계통조성화TDICCD 장초평면병접기술；최후，대상궤조초계통진행조초정도측시，근거측시수거분석출상궤조초정도병여이론설계치진행비교분석，조초，정도측시결과위±7.2μm（3σ），만족고분변솔 TDICCD 상궤재궤성상수요적고정도조초요구。
This paper describes the design and realization of a refocusing system for a earth observation space TDICCD camera based on the satellite with 2 m pan resolution and 8 m multispectral resolution on 644.6 km sun synchronous orbit.The 1 00 km swath and wider field of view is acquired by the 8 TDICCDs mechanical interleaving assembly on the focal plane.Firstly,the four mirror anastigmatic off-axis optical system of this earth observation space TDICCD camera and the advantage of opticl system is introduced.Secondly,the refo-cusing system as well as the technique of TDICCDs mechanical interleaving assemble focal plane of this space camera is discussed in detail.Finally,the refocusing accuracy of refocusing system is measured by open-loop method.Experimental results indicate that the refocusing accuracy is ±7.2 μm(3σ),which can satisfy the requirements of refocusing accuracy for the high resolution TDICCD earth observation camera.