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根据干涉型超光谱成像仪的原理、特点以及对星上定标的要求,介绍了几种星上定标技术,分析了几种定标方案的结构和优缺点。在一次像面上引入定标结构的方法是利用一次像面上狭缝两端的边视场或在狭缝旁开孔,引入定标光源实现定标。根据聚光结构的不同,定标光源使用聚光镜和自聚焦镜两种方案;全系统定标方法是通过摆镜旋转90°引入定标光源,可分为朗伯板定标系统和积分球定标系统。在实际设计中,根据光学系统、结构总体的实现可能性,选择了积分球定标系统的方案。经过分析对比,后者结构紧凑、光能量大,可实现全系统、全口径、部分视场定标。
According to the theory, characteristics and requirements of calibration on the satellite, several star calibration techniques are introduced, and the structure, advantages and disadvantages of several calibration schemes are analyzed. The method of introducing a scaling structure on an image plane is to use a primary field of view at both ends of the slit on the image plane or to open a hole next to the slit to introduce a calibration light source for calibration. According to the different condenser structure, the calibration light source using the condenser and self-focusing mirror two options; the whole system calibration method is through the rotating mirror 90 ° into the calibration light source can be divided into Lambertian plate calibration system and the integrating sphere set Standard system. In the actual design, according to the optical system, the overall structure of the possibility of realization, the choice of the integrating sphere calibration system. After analysis and comparison, the latter has the advantages of compact structure and large light energy and can realize system-wide, full-aperture and partial field calibration.