ephemeris

简明释义

英[ɪˈfemərɪs]美[ɪˈfemərɪs]

n. 星历表，历书；日历，日记

复 数 e p h e m e r i d e s

英英释义

单词用法

同义词

反义词

例句

1.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。

2.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。

3.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。

4.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。

5.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。

6.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！

7.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。

8.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。

9.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。

10.Astronomers often refer to the ephemeris 天体历表 to predict the positions of celestial bodies.

天文学家经常参考ephemeris 天体历表来预测天体的位置。

11.Navigators use an ephemeris 历书 to determine their location using the stars.

导航员使用ephemeris 历书通过星星来确定他们的位置。

12.The satellite's ephemeris 轨道历表 is crucial for accurate tracking.

卫星的ephemeris 轨道历表对于准确跟踪至关重要。

13.For precise astronomical calculations, an updated ephemeris 天文历表 is essential.

对于精确的天文计算，更新的ephemeris 天文历表是必不可少的。

14.The ephemeris 历书 provides data on the movements of planets and moons.

该ephemeris 历书提供有关行星和月球运动的数据。

作文

The concept of an ephemeris (星历表) is crucial in the field of astronomy and navigation. An ephemeris provides a table or data set that lists the positions of celestial bodies at regular intervals throughout a specific period. This information is essential for astronomers, navigators, and even satellite operators who need precise calculations of where objects in space will be located at any given time. Without accurate ephemerides (星历), it would be nearly impossible to track the movements of planets, stars, and other celestial phenomena. Historically, the creation of an ephemeris dates back to ancient civilizations. The Babylonians, for instance, were among the first to record celestial events and predict the positions of planets. They used their observations to develop early forms of an ephemeris, which allowed them to create calendars and make agricultural decisions based on the timing of celestial events. Over the centuries, as our understanding of the solar system improved, so too did the accuracy and complexity of ephemerides. In modern times, the development of technology has revolutionized the way we generate ephemerides. With the advent of computers and sophisticated algorithms, astronomers can now produce highly accurate ephemerides that account for various factors such as gravitational influences from other celestial bodies, atmospheric conditions, and even relativistic effects. For example, NASA uses advanced computational models to create ephemerides for spacecraft missions, ensuring that probes and rovers reach their destinations with pinpoint accuracy. The importance of ephemerides extends beyond astronomy. In navigation, sailors and pilots rely on ephemerides to determine their position relative to the stars and planets. By referencing an ephemeris, they can calculate their course and make necessary adjustments to avoid hazards and reach their destinations safely. This practice is especially vital in remote areas where GPS signals may be weak or unavailable. Moreover, ephemerides play a significant role in the field of astrology, where practitioners use the positions of celestial bodies to interpret human behavior and predict future events. Astrologers often refer to an ephemeris to determine the positions of the sun, moon, and planets at the time of an individual's birth, creating a natal chart that serves as a basis for astrological analysis. In conclusion, the term ephemeris (星历表) encapsulates a wealth of knowledge about the movement of celestial bodies. Its applications are vast, impacting not only scientific research but also practical navigation and even personal beliefs. As we continue to explore the cosmos, the significance of ephemerides will undoubtedly grow, providing us with the tools we need to understand our place in the universe and navigate our journeys through life.

“星历表”这一概念在天文学和导航领域至关重要。星历表提供了一张表格或数据集，列出了特定时期内天体在规律时间间隔内的位置。此信息对于天文学家、导航员甚至卫星操作员来说是必不可少的，他们需要精确计算太空中物体在任何给定时间的位置。没有准确的星历表，追踪行星、恒星和其他天文现象的运动几乎是不可能的。 历史上，星历表的制作可以追溯到古代文明。比如说，巴比伦人是最早记录天文事件并预测行星位置的民族之一。他们利用观察结果开发了早期形式的星历表，这使他们能够创建日历，并根据天文事件的时机做出农业决策。随着几个世纪的发展，随着我们对太阳系理解的加深，星历表的准确性和复杂性也随之提高。 在现代，技术的发展彻底改变了我们生成星历表的方式。随着计算机和复杂算法的出现，天文学家现在可以生成高度准确的星历表，这些星历表考虑了各种因素，如其他天体的引力影响、大气条件，甚至相对论效应。例如，美国宇航局使用先进的计算模型来创建航天器任务的星历表，确保探测器和探测车以精确的定位到达目的地。 星历表的重要性不仅限于天文学。在导航中，水手和飞行员依赖星历表来确定自己相对于星星和行星的位置。通过参考星历表，他们可以计算航向并进行必要的调整，以避免危险并安全到达目的地。这一做法在GPS信号可能微弱或不可用的偏远地区尤为重要。 此外，星历表在占星学领域也发挥着重要作用，实践者利用天体的位置来解读人类行为并预测未来事件。占星师通常会参考星历表，以确定太阳、月亮和行星在个人出生时的位置，从而创建一个作为占星分析基础的本命盘。 总之，术语“星历表”包含了关于天体运动的丰富知识。它的应用广泛，不仅影响科学研究，还影响实际导航，甚至个人信仰。随着我们继续探索宇宙，星历表的重要性无疑将不断增长，为我们提供理解宇宙中的位置和导航人生旅程所需的工具。