正文翻译：
原创翻译：龙腾网 http://www.ltaaa.com 翻译：天际长弓 转载请注明出处
China to complete its answer to GPS with Beidou navigation satellite launches in March, May
中国将于今年3月和5月再发射2颗北斗导航卫星以应对 GPS 挑战
by Andrew Jones — February 28, 2020
安德鲁 · 琼斯2020年2月28日
A Long March 3B launches a pair of Beidou navigation satellites from Xichang, Nov. 22, 2019.
2019年11月22日，中国在西昌卫星发射中心用长征三号乙运载火箭成功发射了两颗北斗导航卫星。
China will launch Beidou navigation satellites in March and May this year, completing a constellation designed for an array of civil and military applications.
中国将于今年3月和5月继续发射北斗导航卫星，全面建成北斗三号系统，进一步满足民用和军事应用需求。
A Long March 3B rocket arrived at the Xichang Satellite Launch Center Feb. 14, according to China News Service. The Beidou satellite for the launch has also arrived at Xichang, the report states.
据中国新闻社报道，一枚长征三号乙运载火箭于2月14日运抵西昌卫星发射中心。报道称，用于发射的北斗卫星也已抵达西昌。
Both missions will launch single satellites to geosynchronous transfer orbits using enhanced hypergolic Long March 3B rockets.
这两项任务都将使用长征三号乙增强型运载火箭将单颗卫星发射到地球同步轨道。
Xichang spaceport has implemented measures to counter the spread of the Covid-19 coronavirus, but has resumed launches following the Chinese New Year holiday. China announced plans for more than 40 launches this year ahead of the outbreak.
西昌卫星发射中心已经采取措施做好新型冠状病毒的疫情防护，在农历新年假期结束后已经恢复发射计划。在疫情爆发前，中国宣布了今年将会有超过40次的发射计划。
The completed Beidou navigation satellite system consists of 27 satellites in medium Earth orbits, five in geostationary orbits and three in inclined GEO orbits. The orbits of the latter are designed to form two figure eight loops to provide optimized coverage to China and neighboring countries in the Asia-Pacific.
完成后的北斗三号卫星导航系统空间段由27颗中地球轨道卫星、5颗同步轨道卫星、3颗倾斜同步轨道卫星组成。后者的轨道被设计成两个8字型轨道，以便为中国和亚太地区的邻国提供最佳的覆盖面。
Beidou navigation and positioning system (BDS) is used in sectors including public security, transportation, fishing, power, forestry, disaster reduction, the construction of smart cities, social governance and mass market applications. This system can also be used for emergency search and rescue.
北斗导航定位系统被广泛应用于公共安全、交通、渔业、电力、林业、减灾、智能城市建设、社会治理和大众市场应用等领域。 该系统还可用于紧急搜索和灾害救援。
BDS also boosts the capabilities of the People’s Liberation Army in areas including weapons targeting, guidance and other services. Notably Beidou removes previous Chinese military reliance on U.S. GPS, which would be made unavailable in a conflict.
北斗系统还增强了中国人民解放军在武器瞄准、精确制导和其他多个领域的执行能力。 值得注意的是，北斗系统消除了中国军方对美国全球定位系统GPS的依赖，因为GPS在冲突时期必然是不能使用的。
The Beidou system has been constructed in three phases. The construction of BDS-1 to provide services to China was completed by 2000. BDS-2, providing services to the Asia-Pacific region, was completed by 2012, while BDS-3 will be completed to provide global services in H1 2020.
北斗导航系统的建设分为三个阶段。主要向中国提供服务的北斗一号系统已于2000年完成发射。 为亚太区域提供服务的北斗二号系统已于2012年完成发射，而北斗三号系统将于2020年上半年全面建成，以面向全球提供服务。
As with GPS and other navigation systems, Beidou also has requisite ground and user segments as well as the space segment.. The ground segment consists of various ground stations, including master control stations, time synchronization and uplix stations and monitoring stations. The user segment refers to receivers and processors that allow a system or device to make use of the signals transmitted by satellites. BDS features compatibility and interoperability with other navigation satellite systems.
与GPS和其他导航系统一样，北斗卫星导航系统也由必要的空间段、地面段和用户段三大部分组成， 地面段主要为各种地面站，包括主控站、时间同步/注入站和监测站等，用户段主要是指接收器和处理器，使系统或设备能够利用卫星发射的信号。 北斗系统具有与其他卫星导航系统兼容和互操作的特点。
The Beidou is also features in the Belt and Road Initiative (BRI) mega-project. The system has become operational in Pakistan following rollout of ground stations, with the military opting to switch from GPS to Beidou services.
北斗导航系统也参与了一带一路的大型项目。 随着地面站的建成，该系统已在巴基斯坦投入使用，巴基斯坦军方的导航定位也开始选择从GPS服务切换到北斗系统。
The China Satellite Navigation Office states that Beidou has a positioning accuracy better than 5 meters, the velocity for the Asia-Pacific region.
中国卫星导航办公室表示，在亚太地区，北斗系统的定位精度可以达到5米 。
The China Academy of Space Technology (CAST) and Chinese Academy of Sciences (CAS) are responsible for development and manufacture of Beidou navigation satellite. The satellites use hydrogen maser clocks for precision timing and phased array antennae for navigation signals.
中国空间技术研究院和中国科学院负责北斗导航卫星的开发和制造。这些卫星使用氢脉泽时钟进行精确定时，使用相控阵天线进行导航。
China announced Feb. 15 that the 41st and 49th (geosynchronous), 50th and 51st (medium Earth orbit) Beidou satellites had completed on-orbit testing and officially joined the network.
中国于2月15日宣布，第41颗和第49颗(同步轨道卫星)、第50颗和第51颗(中地球轨道卫星)北斗卫星已经完成在轨测试，并正式加入网络。
The Beidou Navigation Satellite System has been constructed primarily using the Long March 3B rocket. Launching from Xichang deep inland.
北斗卫星导航系统空间段主要是由长征三号乙运载火箭从处于内陆深处的西昌卫星发射中心发射完成的。
Official documents from the Beidou system office state (pdf) that China plans to establish a “ubiquitous, integrated and intelligent, comprehensive national positioning, navigation and timing (PNT) system” based on Beidou by 2035.
北斗系统办公室的官方文件称，中国计划在2035年之前建成一个“以北斗为核心，更加泛在、更加融合、更加智能的综合定位、导航和授时(PNT)系统。”
评论：
原创翻译：龙腾网 http://www.ltaaa.com 翻译：天际长弓 转载请注明出处
criticalobserver
China must be congratulating herself that she had the foresight two decades ago to develop her independent Beidou navigation system. If China had not done so, I am convinced that Trump would have no hesitation in cutting GPS from China today. All countries, including her allies like Mexico , Canada and Germany now realise that the US cannot be trusted.
中国必然非常庆幸自己在20年前的远见，坚持发展了自己独立的北斗卫星导航系统。 如果中国当时没有这样做，我相信特朗普今天会毫不犹豫地切断在中国的 GPS信号。 包括美国的盟友墨西哥、加拿大和德国在内的所有国家现在都已经意识到，美国不可信。
Ramesh
Imagine if China had invented internet and US didn’t have. Chinese on this board will lecture US too.
想象一下，如果中国发明了互联网，而美国没有， 中国人也一样会对美国说教。
Benson
In the years to come, many more technologies will be from China, just remember that the Chinese had been great inventors and discovers throughout her long history. On the contrary, young America was only a spoilt baby who have no qualm about self praising her own creativeness. Please remember that many creative talents were not born in America per se but came to America as immigrants. If the situation in these countries improved, this lifeline will slowed to a trickle. On the other hand, China will continue to produce bright and creative people in the years to come and it can only get better. American will look you on your ears and still tell you a lie. America wanted to remain no 1 forever and that why they wanted to beat down China at every opportunities. But do you personally think that it is possible? By the way, humanity owe the Chinese a debt it you bother to read the book by Robert Temple - Land of inventions and discoveries. It is a compilation of the great work of Joseph Needham. Trust your eyes more than your ears, this is my little piece of advise to you.
在未来的岁月里，更多的技术将来自中国---- 大家只要记住，中国人是伟大的发明家，在她漫长的历史中你经常会发现这一点。 相反，年轻的美国只是一个被宠坏的婴儿，对自己的创造力没有丝毫不安。 请记住，许多创造性人才并非本身出生在美国，而是作为移民来到美国的。 如果这些国家的情况有所改善，这些人将成为反哺祖国的涓涓细流。 另一方面，在未来的岁月里，中国将继续培养出更多聪明、有创造力的人才，而且只会越来越好。而美国人即便看着你的耳朵，也仍然会对你撒谎。 美国想永远保持世界第一，这就是为什么他们想抓住每一个机会击败中国的原因。 但是你个人认为这是可能的吗？ 顺便说一句，全人类欠中国人一个人情——如果你费心去读一下英国学者罗伯特·坦普尔的著作《中国——发明和发现的国度》， 这是对李约瑟伟大著作的汇总，里面提到现代世界赖以建立的基本发明创造，几乎有一半以上源于中国。 相信你的眼睛多过你的耳朵，这是我给你的小小忠告。
Ramesh
India is already implementing similar called NAVIC. Already 7 satellites have been launched and more to come. Pakistan doesn''''t have any space cable programme.
印度已经在实施类似的印度区域导航卫星系统NAVIC， 目前已经发射了7颗卫星，未来还会发射更多。 巴基斯坦没有任何的导航系统项目。
Hug
From what I can tell China is planning on giving Pakistan access to Beidou, so Pakistan does have a space cable programme.
据我所知，中国正在计划让巴基斯坦进入北斗卫星导航系统，所以巴基斯坦现在确实有了一个导航系统项目。
criticalobserver
China plans to launch two more satellites this year to complete the Beidou navigation system. By the end of the year, many countries will have the option of becoming independent of the US GPS system. It should be pointed out that the Beidou system is superior to the GPS as it is more modern.
中国计划今年再发射2颗卫星来完成北斗卫星导航系统空间段。 到今年年底，许多国家将可以选择独立于美国的 GPS 系统之外。 需要指出的是，北斗导航系统比 GPS 导航系统更加现代化，具有更大的优越性。
Ramesh
Please read about GPS III currently being rolled out. I am not an expert. But I don''''t think Americans will be that behind. It will be a cat and mouse game. EOD, we in India use GPS a lot for navigation. We do have our own.
请去了解一下目前正在推出的第3代GPS， 我不是专家， 但我不认为美国人会那么落后， 这只是欲擒故纵的把戏。 总之，我们在印度导航时经常使用 GPS， 但我们也有我们自己的系统。
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