在天文上，本术语指的是观测的参考星的位置(或星等)与星表上的该星的位置(或星等)的差值。
In Astrometry, the term is applied to the difference between the observed position (or magnitude) of a reference star and the position (or magnitude) listed in the star catalog.
1998年汛期隔河岩水利枢纽观测部位为深孔、表孔及消能工。
Monitoring observation localization for Geheyan Project in 1998 flood season was the deep outlets, the surface spillway, the still basin and auxiliary energy dissipators.
为提高地震前兆数据库的存取效率，提出了一种把一串观测数据以二进制存储为一个记录的新的数据库表结构。
A new database table structure which stores a string of sampling data as binary data into a record is presented to improve earthquake precursor data access speed.
利用观测资料分析了冬季太平洋海表温度异常对风暴轴和急流的影响。
Observational analysis is conducted of the effects of winter Pacific SSTA on the storm track and jet stream.
直到目前，对于CCD观测者唯一合适可用的星表是GSC(哈勃空间望远镜的引导星参考星表)，它包含1.8亿个目标(恒星和星系)。
Until quite recently, the only useable catalogue for CCD observers was the Hubble Space Telescope's Guide star catalogue (GSC), that contains about 18 million objects (stars and galaxies).
该文简述了巡天观测和星表编制的历史和意义。
The history and significance of the sky survey and compiling catalogs are briefly described.
通过振筒气压仪与水银气压表动态比对试验，验证了振筒气压仪与水银气压表观测数据的可比性。
It is proved that the perform which be able to comparison between the mercury pressure meter and the vibration cylinder pressure sensor through the comparison.
本文叙述了子午星表系统误差的主要来源，等高观测的特点及等高星表的不足之处。
In this paper, the main sources of the errors in a meridian catalog, the characteristics of the equal altitude observation and the shortages of an equal altitude catalog are described.
卫星数据全部被分析并判断出月表是否有水尚需一定时间，LCROSS(月球陨坑观测和遥感卫星)项目总指挥丹安德鲁斯说。
It will be awhile before all the data from the satellite can be analyzed to determine if there is water on the moon, according to LCROSS project manager Dan Andrews.
表中光照度数据为上午和下午两次观测值的平均值。
The data of solar radiation in the table were the average of forenoon and afternoon.
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。
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.
提出了一种基于星表数据的建模和仿真方法，模拟在任意观测时刻、任意观测地点观测到的星空背景。
Followed, based on the IR catalogue data, an approach for modelling the celestial background observed in any time, on any eyeshot and at any visual angel, is presented.
为此，设计了以导航星凸多边形和观测凸多边形之间距离最小为准则的识别算法。针对星光制导的导弹观星时间很短，提出了根据弹道生成弹上导航星表的方法，其导航星表只需存储30颗星的75 个凸多边形。
As the star sensor of ballistic missile works only for short time, the navigation stars in the missile can be reduced to 30, and the convex polygons can be reduced to 75 for different trajectories.
为此，设计了以导航星凸多边形和观测凸多边形之间距离最小为准则的识别算法。针对星光制导的导弹观星时间很短，提出了根据弹道生成弹上导航星表的方法，其导航星表只需存储30颗星的75 个凸多边形。
As the star sensor of ballistic missile works only for short time, the navigation stars in the missile can be reduced to 30, and the convex polygons can be reduced to 75 for different trajectories.
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