CAJ | 학술논문

空间高光谱成像仪是现代空间遥感器的新型载荷，设计的空间高光谱成像仪光学系统由前置望远系统和光谱成像系统两部分组成，对前置望远系统和光谱成像系统分别设计，再进行组合优化。前置望远系统采用离轴三反结构，在增大幅宽、提高成像质量的同时减小高光谱成像仪光学系统的畸变。为了保证光学系统结构的紧凑，前置望远系统采用视场分离的方式设计，进一步提高了光学系统的分辨率。凸面光栅是现代光栅刻划技术的最新成果，光谱成像系统采用次镜为凸面光栅的Offner光栅光谱仪，实现了光谱成像系统的高分辨率与小型化。组合优化后的高光谱成像仪光学系统幅宽大、体积小、成像质量好、光谱分辨率高、光谱通道数多，全视场全谱段MTF在Nyquist频率下高于0.7，成像弥散圆80%的能量集中在Φ15μm范围内，小于探测器18μm的像元尺寸，均高于系统技术指标要求。
공간고광보성상의시현대공간요감기적신형재하，설계적공간고광보성상의광학계통유전치망원계통화광보성상계통량부분조성，대전치망원계통화광보성상계통분별설계，재진행조합우화。전치망원계통채용리축삼반결구，재증대폭관、제고성상질량적동시감소고광보성상의광학계통적기변。위료보증광학계통결구적긴주，전치망원계통채용시장분리적방식설계，진일보제고료광학계통적분변솔。철면광책시현대광책각화기술적최신성과，광보성상계통채용차경위철면광책적Offner광책광보의，실현료광보성상계통적고분변솔여소형화。조합우화후적고광보성상의광학계통폭관대、체적소、성상질량호、광보분변솔고、광보통도수다，전시장전보단MTF재Nyquist빈솔하고우0.7，성상미산원80%적능량집중재Φ15μm범위내，소우탐측기18μm적상원척촌，균고우계통기술지표요구。
The hyperspectral imaging spectrometer is a new type of load in the modern space remote sensor. The hyperspectral imaging spectrometer optical system designed in this paper has been made up by two parts, front telescope system and imaging spectrometer system. The front telescope system and imaging spectrometer was designed respectively, then assembled and optimized. Off-axis TMA structure was used by front telescope system to increase width, improve image quality, and reduce distortion. Separated fields method was applied on front telescope system for larger swath width and better image quality. Imaging spectrometer was designed by Offner structure with grating convex second mirror. Assembled system has larger swath width, smaller volume, better image quality, higher spectral resolution, and more spectral passage. The MTF of every fields and every spectrum is higher than 0.7 at Nyquist frequency, the diffusion circle of image with 80% energy is 15μm, smaller than CCD pixel size, so the image quality reaches the technology target of system.