
n. 通信卫星
The agreements included a deal under which China will supply and launch a communications satellite for Pakistan by about 2011, Chinese state television said.
中国国家电视台称,双方签署的协定包括一份中国将在2011年左右为巴基斯坦提供并发射通信卫星的协议。
But there is disagreement over whether the launch of what North Korea says was a communications satellite was a violation of U.N. Security Council resolution 1718.
但是在北韩所说的发射一颗通信卫星这个行动是否违反了*********安理会1718号决议的问题上,安理会成员国存在分歧。
Along with the development of space communication and command \u0026 control tasks, communications satellite should have the capability of on-board disposal and switching.
航天通信测控任务的新发展,要求通信卫星具有更强的星上处理与交换功能。
Now US wideband global satcom(WGS) is the best advanced military communications satellite in America.
美军宽带全球卫星通信系统(WGS)是美国目前最为先进的军用通信卫星。
China has successfully developed and launched a communications satellite for Venezuela and signed agreements or contracts on cooperation in the field of communications satellites with some countries.
中国为委内瑞拉研制并成功发射通信卫星,与有关国家签署通信卫星领域合作协议或合同。
Computer simulations are done based on certain earth synchronous communications satellite, and an improved extended Kalman filtering algorithm is adopted in course of filtering.
在滤波计算过程中,采用了改进的广义卡尔曼滤波算法,以某地球同步轨道通信卫星为背景,进行了计算机仿真研究。
The experimental communications satellite sent into orbit was already beaming back revolutionary songs to a grateful nation, and rocket technicians were weeping tears of joy.
被送入轨道的通信实验卫星已经开始为伟大的国家定向发回革命歌曲,而这使火箭科学家们“喜极而泣”。
Israel Aerospace Industries site shows that Israel launched in 2012, Amos -4-type communications satellites, so that the Israeli communications satellite in orbit to four.
以色列航空航天工业公司网站显示,以色列定于2012年发射“阿莫斯-4”型通信卫星,从而使以色列的在轨通信卫星增至4颗。
DTH systems with high power of live satellite or communications satellite.
DTH系统中采用大功率的直播卫星或通讯卫星。
Telstar is launched as the first active communications satellite—active as in amplifying and retransmitting incoming signals, rather than passively bouncing them back to Earth.
这颗卫星上装有无线电收发设备和电源,可对信号接收、处理、放大后再发射,从而大大提高了通信质量。
Express 4M4 communications satellite in space by the European aviation preparedness manufactured by Eurostar E3000 satellite platform built on the foundation.
“快车4M4”通讯卫星是在由欧洲航空防备航天公司制造的欧洲之星E3000卫星平台基础上建造的。
A trademark used for a communications satellite.
通信卫星的国家。
The launch had been intended to be the start of a mission to put a communications satellite into orbit.
本次发射原本计划首次将通信卫星置入轨道。
But the KCNA news agency, North Korea's official mouthpiece, described the hardware as a communications satellite that is part of the country's space programme.
然而作为朝鲜政府代言人的KCNA新闻社,把这个硬件设施称为通讯卫星,属于国家空间计划的一部分。
The North insisted, to universal disbelief, that the exercise was designed to put a communications satellite into orbit.
朝鲜坚称该试射的目的是将一颗通讯卫星送入轨道,然而这一点受到广泛怀疑。
Q:The visiting ROK chief delegate to the Six-Party Talks, Wi Sung-Lac, said countermeasures should be taken against the possible test launch of communications satellite and missile.
问:六方会谈韩方代表团团长魏圣洛正在中国访问,他表示,应对朝鲜即将发射试验通讯卫星和导弹采取反制措施。
The platform is based on a communications satellite that China has been building for years.
中国近年来一直在建造的通讯卫星所基于的平台(才是)。
The DPRK previously announced to launch experimental communications satellite.
此前朝鲜宣布发射通讯实验卫星。
The Australians are in the market for a communications satellite system.
澳大利亚人正想购买一套通讯卫星系统。
n.|telecommunication satellite/telesat;通信卫星
通信卫星(communications satellite)是一种部署在地球轨道上的人造卫星,专门用于接收、放大并转发无线电通信信号,实现远距离的跨地域信息传输。这类卫星通过微波频段与地面站或其他卫星建立连接,支持电视广播、电话通信、互联网数据传输、军事通信及气象监测等多种应用(来源:NASA通信技术部门)。
从技术角度看,通信卫星通常运行在地球同步轨道(GEO,高度约35,786公里),其轨道周期与地球自转周期一致,因此可对固定区域提供连续覆盖(来源:欧洲航天局技术手册)。卫星内部搭载的转发器负责接收地面发射的高频信号,经变频和功率放大后,定向发送至目标接收端。例如,国际通信卫星组织(Intelsat)的卫星系统通过C波段和Ku波段为全球提供跨国电视广播服务(来源:国际电信联盟报告)。
在应用层面,现代通信卫星已形成低轨道(LEO)、中轨道(MEO)和地球同步轨道的多层次网络体系。SpaceX的“星链”(Starlink)项目利用近地轨道卫星群实现低延迟互联网覆盖,而海事卫星(Inmarsat)则通过地球同步卫星为航海、航空领域提供紧急通信保障(来源:国际宇航联合会案例分析)。
历史上首颗主动通信卫星Telstar 1于1962年发射,验证了跨大西洋电视信号传输的可行性,为后续商用卫星通信系统奠定技术基础(来源:史密森尼学会航天历史档案)。
“Communications satellite”(通信卫星)指专门用于传输和接收通信信号的人造地球卫星。以下是其核心信息:
通信卫星是部署在太空中的电子中继站,通过接收、放大并转发来自地面站或其他卫星的无线电信号,实现远距离通信。它绕地球运行,覆盖特定区域或全球范围。
卫星通过天线接收地面发射的信号,利用转发器放大信号并转换频率,再通过下行链路发送至目标接收设备。整个过程需克服大气衰减和信号延迟。
通信卫星是全球化信息网络的核心基础设施,其技术持续推动着远程通信、媒体传播和科学研究的进步。
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