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全天时机载星跟踪器镜头设计 被引量:3

Design on Optical Lens of Aircraft-borne Star Tracker
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摘要 为了提高飞机导航系统的精度,本文设计了一种全天时机载星跟踪器的光学镜头,通过光学设计和像差分析,使光学系统的角分辨率为2角秒,在一个CCD像元尺寸内光学系统的能量集中度达到90%以上,畸变小于3‰,弥散斑直径最大7.6μm,其他各种像差也得到了很好的校正.同时为了提高星跟踪器探测的极限星等,设计了有六个档位的滤光片调节机构.本设计满足用户对高精度天文导航系统的需求. This article carries on the optical design and the structural design on one kind entire day aircraft-borne star tracker′s optical lens.It uses Cassagrain refraction and reflecting system,and the angular resolution is 2 angular seconds,optical system's energy concentration degree achieves above 90% in a CCD pixel size,the distortion is smaller than 3‰,the biggest spot′s diameter is 7.6 μm,the others aberration also obtain very good adjustment.To enhance the limiting magnitude which the star tracker surveys,designing a light filter control element.This design satisfies the user to the high accuracy stellar guidance system's demand.
出处 《光子学报》 EI CAS CSCD 北大核心 2010年第S1期105-108,共4页 Acta Photonica Sinica
关键词 天文导航 星跟踪器 光谱滤光 光学设计 结构设计 Celestial navigation Star tracker Spectrum filters Optical design Structural design
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