实际上，有了定位星就更有意义了；他们可以被观察，而不是试图猜测他们何时会升起。
Actually it makes more sense with setting stars; they can be watched instead of trying to guess when they'll rise.
从月亮看每个事情的开始，其定位星看事件的结局。
Accept the beginning of every thing from the Moon, but the end from her dispositor.
三星时差定位星座是用于地面雷达辐射源定位的星座。
Three satellites cluster for time-difference localization is applied to find the radar beacon position on the ground.
船长：看来我们遇到麻烦了，现在只有靠北极星定位了。
Captain: We have trouble now. The polestar is our only navigator.
在星载GPS载波相位测量中，周跳的探测与修复对最后的定位精度起着至关重要的作用。
In the course of satellite-borne GPS carrier phase measurement, cycle-slip detection and repair plays a very important role in the GPS station precision.
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.
从三星时差定位的原理出发，构建定位方程组，推导理论定位精度公式，详细分析各种星座布局对定位的影响。
Basing on the basic principle of tri-satellites geo-location using TDOA, theory location precision equation is developed and infection of various constellation shape are analyzed in detail.
而对星载SAR图像进行几何校正处理，消除图像中的各种几何变形，从而实现精确定位也越来越重要。
The geometric rectification of satellite SAR image becomes more and more important in order to avoid geometric distortion and locate the image accurately.
研究表明，对单星无源定位的理论和工程实现，尚需作进一步的研究。
The research results showed that the theory and engineering implementation of passive location by single reconnaissance satellite were need more investigation.
本文在北斗双星有源定位系统的基础上进行了三星无源定位的研究。
Basing on the Double star Active Positioning System, this article conducted the research on the Beidou Tri-star Passive Positioning System.
探讨星像的定位问题，提出一种用于实测资料分析与处理的最大相关估计方法。
The stellar image location is studied in this paper, and a new estimation of maximum correlation procedure is presented, which has been used to process and analyze the observation data.
他帮忙制定了“星尘计划”，使用能被反射传感器探测到的再极化星尘来定位那些小行星，并扫除威胁。
He helped develop the Stardust Plan, which used sensor-reflective repolarized dust to spot the asteroids and clear the threat.
结果表明，由于利用整体平差方法参加归算的观测资料覆盖天区扩大，包含了较多的参考星，因而可以获得高于单底片归算的定位精度。
The results show that because of the increase in the sky coverage and number of reference stars, the precision of deducted positions is improved compared with single plate adjustment.
本发明提供了一种导航装置，包括：接收机，用于接收来自卫 星定位系统的反映当前位置的导航数据；
The invention provides a navigator, which comprises a receiver for receiving the navigation data reflecting current locations from the satellite positioning system;
为了提高单频gps单点定位精度，提出一种基于星间求差的GPS自差分方法。
In order to improve the precision of the single frequency GPS, a method to achieve self-difference based on difference between satellites is presented.
软件系统包括：完成对硬件的软件控制，实现寻星定位子系统的寻星算法以及对天线主要测量参数的软件实现。
The functions of the software system include controlling the hardware, searching satellite and measuring the main parameters of the antenna.
针对单星测向定位中干涉仪设备复杂、卫星姿态测量要求高等不足，提出了一种基于多普勒变化率的单星无源定位方法。
Due to the complexity of the interferometers and high requirement of satellite attitude, a method of passive localization based on Doppler rate-of-change of single satellite channel is presented.
本文介绍了一种新的星载无源定位方法，即利用自旋卫星的高速旋转特性，用一维长基线干涉仪测向就可完成对地球表面地磁辐射源的近实时高精度定位。
A new passive localization technology of DF on satellite is given, which only requires one-dimension DF equipment. It's based on DOA information of the target in the different time.
通过所获得的卫星仿真数据，文中用最小二乘法与选星法对用户进行了定位验证比较，结果表明该卫星仿真器是可用的。
Using the method of Least Squares and the method of Selected Stars, the users Position and Velocity was got through the data acquiring from the simulator.
某个小组对绘制宇宙中氢的分布图感兴趣，另一个则对定位脉冲星感兴趣，还有的在研究银河系的结构。
One group is interested in mapping the distribution of hydrogen in the universe, another in the location of pulsars, and yet another is studying the structure of our galaxy, the Milky Way.
利用精确的星间激光测距信息，提出了基于星间测距的三星时差定位系统标校方法。
Based on accurate distance information between satellites measured by laser, a calibration technique of a tri-satellite TDOA location system is put forward.
当星载微处理器系统发生故障后，如何在多核处理器中判断故障、定位故障、剔除故障，需要一种低成本、高效率的方法予以实现。
When the on-board microprocessor has a fault, it needs a low-cost, efficient way to achieve how to judge fault, locate fault, remove fault in multi-core processors.
分析比较了同时瞄准恒星的个数、星敏感器的精度以及改变采样周期对航天器定位误差的影响。
The effect on the number of sighting star, the precision of star sensor and the change of sampling period to the error determination is analyzed and compared.
年8 月在上海天文台利用安装在1 ．56米望远镜上的CCD探测器对天王星五颗主要卫星进行了定位试观测。
The major satellites of Uranus were observed with the CCD detector equipped on the 1.56m telescope at the Shanghai Astronomical Observation during the 1995 opposition.
北京星桥通科技有限公司是专业从事卫星通信和卫星导航定位技术与产品开发的民营高新技术企业。
Beijing Synjunction Technology co., Ltd is a private hi-tech company, specializing in satellite communications and satellite navigation and positioning system and its products development.
北京星桥通科技有限公司是专业从事卫星通信和卫星导航定位技术与产品开发的民营高新技术企业。
Beijing Synjunction Technology co., Ltd is a private hi-tech company, specializing in satellite communications and satellite navigation and positioning system and its products development.
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