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- This paper introduces the new radiom et ric technologies adopted at Deep Space Network (DSN)of NASA, USA. Also,it di scusses the realistic significance of these technologies for the development of China deep space navigation technology. 本文介绍了美国航空航天局所属深空网 (DSN)在无线电跟踪测量方面已采用的新技术的应用情况 ,探讨了这些技术对于我国发展深空导航技术的实际意义。
- Autonomous Deep Space Navigation Based On Fading Memory Filtering 一种采用衰减记忆滤波的环月航天器自主导航方法研究
- The Selection of Receiver Signal Form of Differential VLBI in Deep Space Navigation 差分VLBI在深空导航中应用接收机信号形式的选择
- One of the US astronauts who made the first deep space walk on the moon dropped a hammer and a feather together. 一位首次在月球上进行太空行走的美国宇航员让一把锤子和一根羽毛一齐落下。
- The deep space version of Mark II differed from the rendezvous type only in having backup navigation gear and extra heat and radiation protection, 270 kilograms more on a 2,900-kilogram spacecraft. 深层太空版的马可II与会合型飞船的不同之处仅在于它配备了备用导航装置以及超热和辐射保护设施,飞船重量也因此在2900千克上增加了270千克。
- The centre aims to conduct research and experiments in deep space. 它将主要用于深空探测、空间科学等方面的实验和研究。
- Comments Starting with "Is the Moon A Deep Space Planet? 从月球是否属于"深空"谈起?
- Antenna arraying techniques in the deep space network II. 深空网的天线组阵技术2。
- In deep space exploration,it is difficulty for continuous navigation and communication in all weather,and it is especially impossible for our country to construct a global deep space network. 针对我国难以全天候24小时对探测器连续测控和通信,以及建立全球性深空网络困难的问题,提出利用地球静止轨道卫星编队进行深空导航的构想。
- The study and determination of EOP is of direct application to national defense and space navigation. 研究测定EOP,这在国防和航天等方面存在实际需求。
- Traveling wave rotary ultrasonic motors (TRUM) are a new kind of driver that is fit for the need of space navigation. 行波型超声电机适合用于宇航搭载设备驱动器,因此必须对其进行包括高温环境的特殊环境下的性能研究。
- Two clusters of formation flying satellites with a relative angle on geosynchronous earth orbit were used to construct a space-based continuous navigation system for deep space exploration. 应用地球静止轨道的两个编队飞行卫星群构成天基的深空探测导航系统,可以全天候连续为深空探测器导航。
- Aluminium lithium alloy is lower in density and higher in strength.It is a new kind of weldable structural material for space navigation. 铝锂合金是密度较小、强度较高,且具有可焊接特性的新型先进铝合金宇航结构材料。
- We will search for its telltale signs of the darkness of deep space. 并在黑暗中寻找他的蛛丝马迹.;(我们将寻找昭示它的存在的宇宙中的黑暗),
- The exploration of asteroids is becoming a focus of deep space exploration. 小行星探测日渐成为深空探测领域的一个研究热点。
- The fairing of curves and surfaces is one of tasks in CAGD and is used to aviation, space navigation,automobile and shipping,so people very attach importance to it. 曲线、曲面光顺是CAGD中的重要研究课题之一,在航空、宇航、汽车和船舶等设计制造行业中有着重要的应用,因此受到人们的普遍重视。
- Until this month, Jupiter and Neptune have been moving slowing toward one another through deep space. 一直到这个月,木星和海王星都在太空中缓慢地向对方移动。
- Ballistite is a primary propulsive power of the space navigation and missile weapon, in order to safely use it, its characteristics of friction sensitivity must been known very well. 推进剂是宇航和导弹武器等推进系统的主要能源之一,对推进剂摩擦感度性能的检测直接影响到其应用的可靠性。
- The fact of exploring outer space has proved deep space network is the vital mainstay of exploring space. 深空探测的事实证明深空通信测控网是空间开发的重要支柱。
- The cause that Wolfe helps Mu website is a hope its data is the same as data set of climate of bureau of beautiful space navigation to wait " gold standard " be worth to trust like data sources. 沃尔夫拉姆网站的目标是希望其数据同美宇航局气候数据集等“黄金标准”资料来源一样值得信赖。