ephemeris

1. The scheme can anticipate user's location by using ephemeris message.: 该策略利用了星历信息的确定性来预计用户的位置。

2. The GPS Forecasting ephemeris is usually used to predict GPS satellite distribution.: GPS预报星历常用来预报未来一段时间内GPS卫星的分布情况。

3. The broadcast ephemeris, which is the basic of satellite navigation, must be precise and real time.: 卫星导航定位的基础，要求有较高的精度和实时性。

4. Based on satellite ephemeris and time data of the satellite coordinates of the celestial coordinate system.: 根据卫星星历和时间数据计算卫星在天球坐标系中的坐标。

5. We have to acquire the following "tools" to work with: an ephemeris for the year the horoscope is to be made.: 我们必须在工作中使用“工具”，出生那年的一个星历表。

6. Position of the GPS receiver can be precisely calculated in the case of being short of an effective ephemeris.: 接收机位置计算装置，用于根据卫星的精确位置计算所述接收机的位置。

7. The GPS ephemeris and GLONASS ephemeris adapt to some kind of the satellite orbits while they have some shortcoming.: GPS和GLONASS广播星历形式适合于某一类卫星轨道，但存在一定局限性。

8. This paper discusses the essential method of using GPS pseudorange data to assess the precision of broadcast ephemeris.: 论述了GPS监测站伪距观测量评定广播星历精度的基本方法。

9. Ephemeris error is one of the most important factors which affect positioning precision when satellite navigation was used.: 广播星历误差是影响卫星导航用户定位精度的重要因素之一。

10. A fast design method for the lunar satellite transfer trajectory is presented by combining patched conic technique and ephemeris.: 提出了一种将圆锥曲线拼接法与历表相结合，快速设计月球卫星地月转移轨道的方法。

11. A fast design method for the lunar satellite transfer trajectory is presented by combining patched conic technique and ephemeris.: 利用重叠圆锥曲线方法，针对着陆型和月球卫星型两种地月转移轨道，给出了一种地月转移轨道的快速设计方法。

12. Finally, it is identified that the ephemeris has been used as an astrological handbook by Japanese astrologers in 973-1132 years.: 文章最后进一步讨论了木星历表作为一份星占学手册在日本古代被星占家们使用的情况。

13. Devices and methods are described for determining position information without broadcast ephemeris data for extended time periods.: 描述了用于对延长的时间段确定位置信息而无需广播星历数据的设备和方法。

14. Summary: Pocket Stars is an astronomy application featuring an integrated star chart, ephemeris, and celestial navigation calculator.: 综述：特色应用袖珍星星是一个综合天文星图、星历、天文导航计算器。

15. The Chebyshev polynomial was applied to fit satellite coordinates of the broadcast ephemeris to realize satellite orbit standardization.: 利用切比雪夫多项式拟合广播星历的卫星坐标，以实现卫星轨道的标准化。

16. Supposing we wish to make a horoscope for a native born August 3rd 1901, we have to buy an ephemeris for the year 1901 at some book store.: 假设我们希望建立一个1901年8月3日当地出生的诞生星辰。我们就必须到书店去买1901年的星历表。

17. The thesis uses the generalized extended interpolation method in precise satellite ephemeris and clock bias interpolation and GPS height fits.: 本文采用广义延拓法进行卫星精密星历插值、卫星精密钟差插值和GPS高程转换。

18. In this paper, a new method for calculating the coordinate and velocity of the satellite by means of the broadcast ephemeris has been presented.: 本文介绍了利用广播星历表计算卫星的坐标和速度的一种方法。

19. UDRE is related to the status of satellites, including clock errors of satellites and ephemeris errors. And GIVE is mainly about ionospheric errors.: GIVE主要是关于电离层误差，反映的是用广域差分格网点电离层计算出的与用双频计算出的穿透点电离层误差之间的差异。

20. At the bottom of Figure 25, a geocentric ephemeris (using Bretagnon and Simon 1986) gives the apparent positions of the naked-eye planets during the eclipse.: 在图25的底部，一个地心历表(使用Bretagnon和Simon 1986)给出了日食期间肉眼可见的行星的视位置。

21. In this paper, we describe two methods for computing the coordinates and velocities of satellites by using the broadcast ephemeris of the "transit" satellites.: 本文介绍利用子午卫星的广播星历表计算卫星坐标和速度的两种方法。

22. Newton discovers gravitational theory, built up classic mechanics, he USES a formula the biggest ephemeris sport in the cosmos and minimum grain sport of the son unify.: 牛顿发现万有引力定律，建立了经典力学，他用一个公式将宇宙中最大天体的运动和最小粒子的运动统一起来。

23. Designs of the broadcast ephemeris parameters and algorithms of GPS and GLONASS, two major operational satellite navigation systems today have their respective features.: GPS和GLONASS作为当今世界上在轨运行的两大卫星导航系统，其广播星历参数的设计和算法各具特点。

24. This paper analyzed the characters and rule of the satellite ephemeris error. It proposes the Model of the diagnosis and Forecast for the GPS broadcasting ephemeris error.: 分析了GPS卫星星历误差的影响特征与规律，提出了广播星历误差影响诊断与预测模型。

25. It also shows that the variety laws of the fitting result of broadcast ephemeris for MEO and IGSO satellites are similar to each other and are different to GEO satellites.: MEO和IGSO卫星在一个轨道周期内星历参数拟合结果的变化规律相近，但是与GEO卫星的差异较大。

26. If you look up your Heliocentric Ephemeris you will find that "in the latter part of February 1929" there was a conjunction in Cancer! No wonder why the morning was "sunshiny"!: 假如你查阅以太阳为中心的星历表你就会发现在1929年2月的后段时间，出现了一个在巨蟹座的重合！

27. Furthermore, the computer simulation technique is applied to study initially the distortion law of CCD satellite images caused by errors of ephemeris parameters and initial attitude Angle.: 利用计算机仿真技术初步研究了星历参数和初始姿态角误差引起的CCD卫星影像畸变的规律。

28. The orientation information of the sun, the moon and the earth, together with ephemeris are utilized to develop autonomous navigation algorithm, as well as its realization by DSP hardware.: 在小样本观测数据情况下，研究利用日地月方位信息和日月星历表进行航天器自主导航以及利用DSP实现航天器自主导航器的技术。

29. The orientation information of the sun, the moon and the earth, together with ephemeris are utilized to develop autonomous navigation algorithm, as well as its realization by DSP hardware.: 在小样本观测数据情况下，研究利用日地月方位信息和日月星历表进行航天器自主导航以及利用DSP实现航天器自主导航器的技术。

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