Application of new techniques to surveying astronomic azimuth of polaris 新技术在北极星天文方位角测量中的应用
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Geodesy astronomic observation 大地天文观测
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Astronomic radio source 天体射电源
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Astronomic navigation is the earliest one people used , which has the default of low precision and constrained by natural condition , weather and time 其中天文导航是最早被人们利用的一种导航方法，但这种方法存在受自然条件、天气、时间制约、精度低等缺点。
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At ancient times , people were navigated by means of sun , fixed stars , etc . , while currently the common navigation systems are astronomic navigation , inertial navigation and radio navigation 以前，人们主要利用太阳、星星等自然天体。现在人们利用的导航系统主要有：天文导航系统、惯性导航系统、无线电导航系统三大类。
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Dynamic model of satellite is built up with astronomic method , and a short - arch forecast arithmetic of satellite orbit in short arch with single site is given , which is of high precision when only angle data is available 本文使用了天文方法建立了人造卫星运动的数学模型，给出了一种只使用单站短弧段测角数据对人造卫星轨道进行高精度预测的算法。
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Then years ago , in the science clan , there was an astronomic devil who was cruel and brutal and often committed the rules of the clan . at one turbid - while he was trying to steal the leader s writ , he was being discovered and punished by peeling off his hand s skin then excelled out of the clan 盖在十多年前，科学门人之中，一名星宿老魔袁信义饰凶残暴戾，屡犯门规，更图盗取掌门令牌，被判罚以剥手皮刑，再逐出师门。
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In consideration of studying island coast hydrodynamic factors is in order to build breakwater engineering , design waves , astronomic - tide and storm - tide which increases water level are computed to offer design parameters , discuss and analyze the influence of engineering safety aroused by those factors 考虑到研究海岛周围海岸动力因素的目的是为了建设海岛工程，还进行了设计波浪以及天文潮、风暴潮增水的计算，分析了这些因素对工程安全性的影响。
