celestial sphere

D ; ( 3 ) establishing theoretical relations between polar motion of rotational axis , polar motion and precession-nutation of either celestial sphere reference axis ;

建立了自转轴极移和任一天球参考轴极移和章动之间的理论关系；

Analyzing the Difficulties in the Celestial Sphere 's Coordinate System

天球坐标系的难点解析

A Method for Scanning the Celestial Sphere using Real-coded Genetic Algorithm

基于实值编码GA的卫星巡天扫描方法

Intelligent Model of Astronomical Satellite Using GA for Scanning the Celestial Sphere

天文卫星巡天扫描智能规划模型及仿真

One of two points of intersection of the Earth 's axis and the celestial sphere .

地轴延线与天球相交的两点之一。

Astronomers have divided the celestial sphere into a total of 88 regions .

天文学家已把天球划分为88个区域。

Astronomers like to describe the equinox within the conceptual celestial sphere .

天文学家喜欢在假想的天球中描述春秋分。

Model of the celestial sphere ; used by early astronomers to determine the positions of stars .

天球的模型；早期天文学家用的测定星体位置的仪器。

A point in the heavens ( on the celestial sphere ) .

天上的一个点（在天球上）。

A great circle on the celestial sphere that passes through both celestial poles .

通过天体球两极与天体赤道成直角相切的大圈。

Its intersection with the celestial sphere will be a great circle & the ecliptic .

它与天球相交处形成一个大圆&黄道。

The point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars .

天球上的一个点，太阳和月亮构成的系统看上去都在相对于这个点运动。

A great circle on the celestial sphere passing through the zenith and perpendicular to the horizon .

与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点。

The great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth .

天球上的一个大圆，有一个通过地球的中心并与观察者的视野平行的平面。

With 486 partitions , an equal partition method of celestial sphere without overlap is firstly presented to speed up guide star indexing .

首先提出在直角坐标系下将天球球面均匀地分成486个分区的方法&内接正方体法，实现导航星的快速检索。

The purple dots on the celestial sphere mark the locations of pulsars that have already been detected .

屏保中紫色的点表示已探测到的脉冲星位置。

Either of two points on the celestial sphere at which the ecliptic intersects the celestial equator .

二分点在天球上天赤道与黄道相切的两点中的任一点。

If you watch over the period of a day you will see that they move around the celestial sphere once in a period of 24 hours .

如果你对着屏保看一天，上面的星体也将在24小时内围绕天球旋转一圈。

Or approximately , it may be defined as the intersection of the diurnal mean direction of rotation axis with the celestial sphere .

近似地，可以认为天极是自转轴的周日平均方向与天球的交点。

The arc length is new type technology that depends on principle of arc length changeless to use Polaris with other star in the celestial sphere .

弧长法则是利用天球中北极星与任一颗恒星弧长不变的原理而发展起来的新型技术。

Through the analysis of the origin of the Chi System , the author has also obtained that the semi-diameter of the celestial sphere is about 13 meters .

通过对尺寸系统起源的分析，认为古人裸眼目视观测时的天球半径约为13米上下。

( astronomy ) moving from west to east on the celestial sphere ; or for planets around the sun in the same direction as the Earth .

（天文学）在天球上从西向东运动；或者指行星按地球运动的方向绕着太阳转。

The simulation results indicate that Rosette and Common-track constellations , whose satellites are distributed in the celestial sphere uniformly , are appropriate for MEO-TDRSS of China .

仿真结果表明，我国的中轨TDRSS宜采用具备卫星全球均匀分布特性的玫瑰星座和共地面轨迹星座。

He introduced the European clock and the telescope invented by Galileo , with which he drew up a map called " All Planets in the Celestial Sphere . "

引进了欧洲的时钟和伽利略发明的望远镜，绘制了一幅《全天球恒星图》。

Analysis on the Position Sensitive Detector Positioning Error Caused by Laser Spot Using New Three-Ray Model The purple dots on the celestial sphere mark the locations of pulsars that have already been detected .

采用三线位置敏感探测器定位模型分析光斑对定位精度的影响屏保中紫色的点表示已探测到的脉冲星位置。

C + + software is used to classify tri-stars of the guide stars in celestial sphere and implement the method . It is concluded that the SOFM network can reflect the complicated information among star patterns better .

应用C++软件编程，对全天导航星星表的星信息进行了星三角采样、分类，指出SOFM网络可以很好地提取、反映星表中的复杂信息。

These records can be quantified to apparent scales ( angular diameter ) according to the Model of Celestial Sphere used by Chinese ancients . Then we can reduce the size to a brightness on the basis of some " standard points " .

这些记录可以按古人目视观测天象的天球模型进行视大小（角直径）的量化，进而可以用一些已知亮度的流星记录为标准点，将其归算为亮度。