Orbital Selection and Optimization for Approaching Multiple Walker Constellation Satellites;
接近多颗Walker星座卫星的轨道选择和优化
Optimal Design of APSK Constellation for Satellite Channel;
卫星信道中APSK星座的优化设计
Close Approach of Walker Constellation Without Orbital Maneuver;
单个航天器对Walker星座中多卫星的近距离接近
A steady state genetic algorithm which can deal with several criterion functions was applied to the design optimization of Space Based Radar(SBR) satellite constellations.
针对天基雷达星座的构型优化设计,建立了能够反映星座重要工作性能的单双基地间歇式覆盖模型、星间链路模型、双基地雷达的动目标检测模型,得到了低轨道卫星星座星间链路判断准则,给出了统计评价特性和综合评估指标体系。
There is an increasing desire to use constellations of autonomous satellites formation flying and coordination to accomplish complex space mission.
利用自治的卫星星座编队飞行、协同工作来完成复杂的空间任务已经有了越来越强的需求。
The near circle low earth orbits which repeat after 12、13、14、15 orbits per day are often chosen in designing regional partial coverage constellations, so the heights and the inclination angles of these 4 kinds orbits are listed in the end.
在区域间断覆盖星座设计时常常选用每天运行１２、１３、１４、１５圈的近地圆回归轨道，因而最后列出了这４种回归轨道的轨道高度和倾角。
Study of geometric characteristics of inter-satellite links between LEO layer and MEO layer in LEO/MEO satellite constellation;
双层卫星星座层间链路几何参数特性研究
Tentative plan of a micro-satellite constellation used for reconnaissance;
微小卫星星座用于侦察的设想
The Study on Architecture and Key Technologies of the Military Satellite Constellation Communication Network Based on NEMO;
基于NEMO的军事卫星星座通信网络体系结构与关键技术研究
Handoff data registration strategy in satellites constellations communication system;
卫星星座通信系统的切换数据登记策略
In order to minimize the mobility management signaling cost, the general scheme is to reduce the location update interval and the use of paging beams in satellites constellations communication system.
在卫星星座通信系统中,往往通过降低位置更新频率或减少位置寻呼波束的方法达到减少系统开销的目的,这势必会造成位置寻呼成功率的降低及处理时延的增加,为此提出了采用位置寻呼补救策略的思想,通过仿真验证,补救策略可以用很小的信令开销,在移动终端相关位置区内完成小区重新定位,从而提高整个系统的呼叫成功率。
Call drop will occur when no satellite can be visible,handoff is not real-time and the corresponding response is lost in satellites constellations communication system.
卫星星座通信系统中,无物理可见卫星、切换不及时和应答丢失造成正在通信的移动终端被迫掉线,挂机申请如不能及时送至网络管理中心,则无法正常释放信道资源,导致系统阻塞率增加。
The relation between the optimal precise localization and the three-satellite constellation is studied.
用数值方法对三星星座几何构形与定位精度的关系进行了仿真计算,结果表明对满足较高定位精度的区域进行定位,三星的几何构形呈等边三角形时,定位精度最高。
A cluster of stars smaller than a constellation.
星群，星座比星座小的一簇星星
A constellation near Canis Major and Canis Minor.
麒麟星座大犬星座和小犬星座附近的一个星座
A constellation in the Northern Hemisphere near Cygnus and Hercules and containing Vega.
天琴星座北半球一星座，在天鹅座和武仙座附近，星座内包括织女星
Aquarius is the friendliest of the star signs.
水瓶座是所有星座中最友善的星座。
The brightest or main star in a constellation.
主星，阿尔法星星座中最亮的星或主星。
A constellation in the Southern Hemisphere near Musca and Pavo.
天燕（星）座南半球邻近苍蝇座和孔雀座的星座
A constellation in the Southern Hemisphere near Hydra and Vela.
唧筒星座南半球靠近长蛇星座和船帆星座的一个星座
A constellation in the Northern Hemisphere near Lyra and Corona Borealis.
武仙星座位于北半球的一个星座，位于天琴星座和北冕星座附近
A constellation in the Southern Hemisphere, near Antlia and Puppis.
罗盘星座南半球的一个星座，在唧筒星座和船尾星座附近
A southern constellation between Hydrus and Volans.
山案星座位于水蛇星座与飞鱼星座之间的南天星座
Gemini spacecraft
“双子星座”号飞船
No, I don't believe in star signs.
不，我不相信星座。
A constellation in the Southern Hemisphere near Orion and Columba.
天兔（星）座南半球的一颗星座，位于猎户星座和天鸽星座附近
A constellation in the Southern Hemisphere near Columba and Dorado.
绘架星座南半球一星座，位于天鸽星座和剑鱼星座附近
A constellation in the celestial Northern Hemisphere near Cygnus and Sagitta.
狐狸星座北天球天鹅星座和天箭星座附近的一个星座
a star cluster in the constellation Taurus.
金牛星座中的一个星团。
A constellation in the Southern Hemisphere.
显微镜座南半球星空的一个星座
It is the luckiest of all the star signs.
它是所有星座里最幸运的星座。