对导航星选取算法进行了详细研究。
The selection algorithm for guide stars was studied in detail.
导航星库包括导航星表和星对信息表。
The guide star database consists of guide star catalogue and star pair information catalogue.
用KMP算法进行星图识别时，制定的导航星库容量大。
The volume of the navigation star database is large when star map recognition is carried out by KMP algorithm.
通过参数的不同选择，可以转换为其他类型的导航星库。
By the different selecting of parameters, this guide star database can be transformed to others.
然后，介绍星敏感器相关的导航星星表的建立、星图识别技术。
Secondly, the establishment of the guide star catalog and its star identification technology are introduced.
该授予表明导航星公司能推动其现有的商用车辆平台继续走向成功。
The award demonstrates the company's ability to leverage its existing commercial vehicle platforms for continued success.
按一定规则对全天星表的星信息进行了筛选并组建了导航星星库。
The guide star catalog is built with the star information selected from all-sky star catalog on some guidelines.
研究了不同故障星分布状况对全球导航星座pdop可用性的影响。
Effects of different distributions of fault satellites on PDOP availability of global navigation constellation are studied.
仪器星等对正确评估星敏感器的灵敏度、捕获概率以及建立导航星表都有重要的意义。
Stellar instrument magnitudes are important for star trackers; however, there are not simple and accurate methods to estimate stellar instrument magnitudes.
介绍了导航星的选取规则、导航星库的存储内容及采用球矩阵存储和读取导航星库的方法；
The selecting rule for guide star, the storing content of the guide star catalog, spherical matrix storing and the method for reading guide star catalog are presented.
本文介绍了采用球矩阵存储和读取导航星库的方法，阐述了导航星的选取规则及存储内容。
The paper introduces the method which adopts spherical matrix method for storing and reading guide star catalog, and elaborates the selecting rules and storing content on guide stars.
根据观测星图和导航星所具有的特性- - -星对角距和连通性，构造了最大连通匹配树识别算法。
Construct maximum connection match tree identification algorithm with respect to the characters of observed star map and guide stars -star diagonal distance and connection.
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。
With 486 partitions, an equal partition method of celestial sphere without overlap is firstly presented to speed up guide star indexing.
针对高轨环境下导航星可见性差，信号功率低的情况，提出了一种提高导航信号捕获能力的方法，并在理论上进行了分析论证。
For the poor visibility of the navigational satellites and the low power of the signal, the paper proposes a new way to improve the GEO's acquisitive performance and validates the method in theory.
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.
北极星的重要性在于可以用来导航。它的位置十分接近北方，所以被称为“北方之星”。
The importance of Polaris is that its position in the sky marks North - and for that reason it is also called the “North Star”.
此外，全新大切诺基2011天狼星交通的特点，负责监测在78个美国市场上的交通，不断显示，通过汽车导航系统的条件。
In addition, the all-new 2011 Grand Cherokee features SIRIUS traffic, which monitors traffic in 78 markets across the us and continuously displays those conditions through the vehicle's nav system.
整个系统由模拟注入站、模拟星上导航信息处理系统和模拟用户接收机组成。
The whole system are consist of imitated upload station, imitated navigation information processing system and imitated user receiver.
三年后，萨拉的飞船因导航电脑故障，锁定航线向一颗中子星撞去。
Three years later, Salla's nav computer malfunctioned and deposited her vessel on a collision course with a neutron star.
因为北极星是一盏不动的导航灯，那个时代的航海家们主要依靠北极星来导航。
The reason for this was that he decided to orientate the map in the direction of the Pole Star since Polaris was the immovable guiding light in which the voyagers of that era placed their trust.
本论文分析了基于北斗导航定位系统的三星定位系统总体结构和工作原理，对卫星导航中与定位精度有关的部分进行了研究。
This thesis analyzes the principle and architecture of three-star navigation system based on "Beidou" system and investigates the problems related with positioning precision.
具有自主导航能力的新一代星敏感器的显著特点是视场大、精度高、体积小、质量轻、功耗低。
Wide field, high precision, small volume and mass, less power consumption are distinct characters of new generation star sensor, which has self-navigation capability.
利用光学导航相机以及星敏感器，通过测量星光信息以及天体边缘的信息，进行了自主光学导航方案的设计。
An autonomous optical navigation scheme was designed using the star light data and body edge data which is measured by star sensor and optical navigation camera.
本文阐述了利用星敏感器和红外地球敏感器进行自主导航的原理。
The principle of autonomous navigation using star sensors and scanning infrared earth sensors is studied.
若观测星数增多，则可以大大提高系统性能，表明该组合导航系统设计方案是成功可行的。
If there are more navigational stars, the system performance will be improved more. So the design of the integrated navigation system is successful.
由于航天实验费用大，为测试星敏感器性能和星图识别算法，需在地面构建天文导航半物理仿真试验平台。
Because of high spaceflight laboratory fees, it is impractical to take star-pictures real time in order to debug star sensor and test the algorithm of star map identification.
星敏感器是天文导航系统的主要设备，是一种高精度、高可靠性的姿态测量部件。
Star sensor is a high-precision, high reliability attitude measurement equipment of astronomical navigation system.
本文充分利用星座本身构成的空间约束，研究了基于星间观测的星座自主导航方法。
In this paper, making full use of the constraint of constellation structure, an autonomous navigation method of constellation based on inter-satellite measurement was studied.
本文充分利用星座本身构成的空间约束，研究了基于星间观测的星座自主导航方法。
In this paper, making full use of the constraint of constellation structure, an autonomous navigation method of constellation based on inter-satellite measurement was studied.
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