7月25日，托举着“天链一号03星”的“长征三号丙”运载火箭发射升空。     July 25,，Request lift the“Day, a chain of stars”of“Long March 3 c”A carrier rocket launch。

    7月25日23时43分，我国在西昌卫星发射中心用长征三号丙运载火箭成功发射“天链一号03星”，卫星顺利进入太空预定轨道。这次发射成功后，“天链一号”卫星将实现全球组网运行，标志着我国第一代中继卫星系统正式建成。     On 25 July 23 when 43 points，Xichang satellite launch center in our country with long March 3 c rocket launch a successful“Day, a chain of stars”，Satellite into space orbit smoothly。After the success of the launch，“Day, a chain”The satellite will achieve global networking operation，Marks China's first generation of relay satellite system built official。

    “天链一号03星”是我国发射的第三颗地球同步轨道数据中继卫星，由中国航天科技集团公司所属中国空间技术研究院为主研制。经一段时间在轨验证和系统联调后，“天链一号03星”将与2008年发射的01星、2011年发射的02星实现全球组网运行，建成比较完备的中继卫星系统。这一系统将进一步提高我国载人航天飞行任务的测控覆盖率，为我国神舟飞船以及未来空间实验室、空间站建设提供数据中继和测控服务。同时，还将为我国中、低轨道资源卫星提供数据中继服务，为航天器发射提供测控支持。     “Day, a chain of stars”Is our country launch geosynchronous orbit the third man-made satellite data relay，By the China aerospace science and technology corporation belong to China academy of space technology developed primarily。After a period of time in rail validation and system alignment，“Day, a chain of stars”Will launch in 2008 and the 01 star、Launched in 2011 to achieve global network of 02 star running，Build a complete relay satellite system。This system will further improve our country's manned space flight missions and control the coverage，For our country the shenzhou spacecraft and future space laboratory、Space station to provide data relay and measurement and control service。At the same time，Will also in our country、Low orbit resources satellite provide data relay service，Provide support for spacecraft launch measurement and control。

    “天链一号”01星、02星两颗中继卫星组网运行以来，先后参加了天宫一号与神舟八号、神舟九号交会对接任务并发挥了重要作用。任务过程中，中继卫星发挥高码速率、高动态、高轨道覆盖率的优势，提升了飞船和天宫一号的测控覆盖率和数据传输能力，增强了空间交会对接任务实施的安全性和可靠性，为实施手控交会对接、开展空间科学实验等提供了稳妥高效的天基测控通信保障。     “Day, a chain”01 star、02 star of two relay satellite network since its operation，Participated in the temple, and a shenzhou 8、The shenzhou 9 rendezvous and docking tasks and has played an important role。Task in the process，Relay satellite play high code rate、High dynamic、The advantages of high orbit coverage，Improve the shuttle and a temple, and control the coverage and data transmission capacity，Enhance the space rendezvous and docking task of the implementation of the safety and reliability，For the implementation of manual control rendezvous and docking、To develop space science experiment, provides the safety of space-based efficient communication safeguard measurement and control。

    用于这次发射的长征三号丙运载火箭由中国航天科技集团公司所属中国运载火箭技术研究院研制。这是长征系列运载火箭的第166次飞行。新华社照片 江宏景 摄     Used for the launch of the long March 3 c rocket by China aerospace science and technology corporation subordinate rocket technology research institute of China。This is the long march rocket series of 166 flights。The xinhua news agency JiangHongJing photos taken