摘要
星光大气折射模型及大气数据模式是整个星光折射自主导航方案中的一个重要组成部分。利用光线追迹方法,建立了一种考虑大气空间不均匀性的星光大气折射模型,模型数据基础为自主建立的基于实测廓线数据的全球范围三维空间格点化大气参数廓线模式。同时分析了新建立的星光折射模型与基于单点大气密度指数高度分布的传统星光折射模型之间的差异,相对于传统模型,新模型由于考虑了大气不均匀性,理论精度更高。
Atmospheric refraction model and data mode are important compositions in the whole star- light autonomous navigation scheme. According to the light model considering atmospheric inhomogeneous is proposed. T tracing method, an atmospheric refraction he data base of the refraction model is the global three-dimensional grid atmospheric profile mode based on measured profile data. Additionally, the difference between the new refraction model and the conventional one which is based on the exponential atmospheric profile model at a single point is analyzed. The result indicates that the theoretical precision of the new model is higher than the conventional one for considering atmospheric inhomogeneous.
作者
武鹏飞
宋峰
魏合理
WU Peng-fei SONG Feng WEI He-li(Chinese Academy of Science, Anhui Institute of Optics and Fine Mechanics, Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Hefci 230031, China Beijing Institute of Electronic System Engineering, Beijing 100554, China)
出处
《现代防御技术》
北大核心
2017年第2期6-13,共8页
Modern Defence Technology
关键词
星光导航
折射模型
大气不均匀性
大气模式
格点
大气廓线
stellar navigation
refraction model
atmospheric inhomogeneous
atmospheric mode
grid
atmospheric profile
