| 1. | It is called celestial navigation .
它叫做天文导航。 |
| 2. | Automatic celestial navigation
自动天文导航 |
| 3. | Celestial navigation trainer
天文导航教练器 |
| 4. | The research of stars map bottom procession in celestial navigation has been done in this dissertation
本文是对天文导航中星图图像进行底层处理的研究。 |
| 5. | Celestial navigation is basic model of autonomous orientation navigation of the spacecraft around the earth
天文导航是绕地飞行航天器最基本的自主定位导航方式。 |
| 6. | The autonomous celestial navigation algorithm in the case of small sample observation is investigated in this paper
本文分析了航天器实现自主导航的天文导航方法。 |
| 7. | Celestial navigation has many advantages in this field because of its completely autonomous ability and high resulted navigation accuracy
天文导航具有完全自主、导航误差不随时间累积的优点。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | The ming dynasty used besides the technology of forefathers ' monsoon to make certain routes , the compass to gauide marching , they took a lot of records of the constellation oriented datas and the variety of the ocean orb ' s height in different oceanic areas in the book named < constellation chart of acrossing seas > too , which contribute a lot in the archaian astronomy
明朝船队除了采用前人季风确定航线、指南针导航等技术外，还在《过洋牵星图》中纪录了众多的星宿定位数据和不同海区天体高度的变化，对古代的天文导航有重要贡献。 |
