星座

北斗七星本身不是一个星座。

The Big Dipper is not by itself a constellation .

32颗GPS卫星星座空间覆盖特性建模与仿真

Modeling and Simulation of Coverage Performance of 32 GPS Satellites Constellation

你属什么星座？

What sign are you ?

她在墙上贴满了十二星座的标志。

She covered the walls with the signs of the zodiac .

“你是什么星座的？”——“双子座。”

' What star sign are you ? ' — 'Gemini . '

托勒密绘制了48个星座1,000多颗恒星的星位图。

Ptolemy charted more than 1000 stars in 48 constella-tions

这份天体图标明了天球北半部所有的星座。

The map of the heavens showed all the northern constellations .

双子座是十二宫的第三个星座，代表头脑矫捷。

Gemini is the third sign of the zodiac representing of thought .

实行该政策的一个原由是，企业已经开始建立大规模的卫星星座，包括成百上千颗卫星，含有许多运动部件。

One impetus for the policy is that companies are already starting to build massive constellations , comprising hundreds or thousands of satellites with many moving parts among them .

GPS和类GPS测距技术在双星编队星座状态确定中的联合应用

Double-Satellite Formation Constellation States Determination With GPS and " GPS-like " Ranging Technology

论GPS星座组成及若干抗AS方案

Discussion on Formation of GPS Constellation and Some Schemes to Anti - AS

利用仿真得到了该星座在我国的性能指标，并和GPS星座进行了比较。

The performance of the constellation which is compared with GPS is obtained by simulation .

GPS星座的现状与未来

Today and Tomorrow of GPS Constellation

用改进的星座图扩展法降低OFDM信号峰均功率比

Reducing the OFDM peak-to-average power ratio with improved constellation extension

船用GPS接收机的星座最佳选择方法及判断船位可靠性的依据

Optimal Method for Measurement Selection of GPS Marine Receiver and Bases on Judgement of the Reliability of Ship Position

介绍了美国最新研制的GPS接收机及抗干扰设备，概述了美国新一代GPS星座发展计划及对提高未来GPS抗干扰性能的影响。

The influence of new generation GPS program on improvement of GPS anti-jamming performances in the future was described .

该文通过对GPS卫星星座和GPS卫星运行情况的研究，推导出理想模型下卫星轨道方程和卫星位置与时间的关系公式；

By researching GPS satellites constellation , this article deduces satellite orbit equation and satellite position-time function under ideal model .

利用所给定义及其判据，设计了GPS星座的仿真实验，在此条件下得到了GPS星座的空间覆盖结果。

Based upon above , the simulation test is designed for GPS constellation and the space coverage results are also acquired .

GPS是解决编队星座状态确定问题的最有前途的方法。

The Global Positioning System ( GPS ) is one of the best ways in states determination for satellite formation constellation .

位于类GPS卫星星座时，与中轨道探测器探测星下点基本相同，不会影响光辐射辐照度的探测和爆炸当量的确定。

Detection of the irradiance and the power would not be effected when the detector on the ISGO or similar GPS constellation .

的问题。系统主要有三部分组成，空间星座部分、地面监控站和用户端设备（主要有车载GPS导航仪和装有GPS芯片的手机两种）三部分。

The system is made up of three parts mainly , including space constellation ,, ground control station and user end equipment .

对GPS星座的空间覆盖特性进行了研究，从系统作用原理上阐述了最小覆盖性要求。

The space coverage property of GPS constellation is studied . The requirements of minimum coverage for normal system operation is illustrated principally .

OFDM调制系统主要包括星座映射、IFFT变换等部分。

OFDM modulation system mainly includes constellation mapping , IFFT translation .

Walker星座自主定轨误差分析

Error Analysis of Autonomous Orbit Determination for Walker Constellation

载波频偏对OFDM系统影响有两大方面：一方面它使得星座图发生了旋转；

Carrier offset has two main influence on OFDM systems : on one hand it makes the constellation rotates ;

利用Walker星座实现全球导航卫星星座设计

Global Navigation Satellite Constellation Design Using Walker Constellation

单个航天器对Walker星座中多卫星的近距离接近

Close Approach of Walker Constellation Without Orbital Maneuver

研究成果对实际发射LEO星座时相关参数的选取具有参考价值。

The research results can be referenced when determining the parameters of LEO constellation in practice .

Walker星座卫星网络拓扑结构动态性分析

Topological dynamics analysis of Walker-constellation satellite networks

然后对蜂窝IP技术进行了简单介绍，指出了将该技术应运到无星际链路的星座通信系统中的可行性。

Then the paper introduces some concepts of cellular IP , and gives us the feasibility of using it into a constellation satellite communication without inter-satellite link .