China launches new Beidou navigation satellite

      Source: Xinhua| 2018-07-10 06:45:53|Editor: Yurou
      Video PlayerClose
      CHINA-XICHANG-SATELLITE-LAUNCH (CN)?

      China sends a new Beidou navigation satellite into orbit on a Long March-3A rocket from the Xichang Satellite Launch Center, in the southwestern Sichuan Province, July 10, 2018. The satellite is the 32nd of the Beidou navigation system, and one of the Beidou-2 family, which is the second generation of the system. The launch was the 280th mission of the Long March rocket series. (Xinhua)

      XICHANG, Sichuan, July 10 (Xinhua) -- China sent a new Beidou navigation satellite into orbit on a Long March-3A rocket from the Xichang Satellite Launch Center, in the southwestern Sichuan Province, at 4:58 a.m. Tuesday.

      The satellite is the 32nd of the Beidou navigation system, and one of the Beidou-2 family, which is the second generation of the system.

      The launch was the 280th mission of the Long March rocket series.

      China started to construct the third-generation of Beidou system in 2017, and eight Beidou-3 satellites are now in space.

      So why launch another Beidou-2 satellite?

      "The launch of a backup Beidou-2 satellite will ensure the system's continuous and stable operation," said Yang Hui, chief designer of the Beidou-2 series.

      Named after the Chinese term for the Big Dipper constellation, Beidou aims to rival the U.S. GPS system, Russia's GLONASS and the European Union's Galileo as a global satellite navigation system. The project was formally launched in 1994. It began serving China in 2000 and the Asia-Pacific region in 2012.

      Since then, the system has provided reliable and free, all-weather and all-time positioning, navigation and timing services to customers in the Asia-Pacific region and has never been out of service, according to the China Academy of Space Technology.

      However, some of the Beidou-2 satellites are nearing the end of their lives and need to be replaced by backup satellites. China launched two backup satellites on March 30 and June 12, 2016.

      This new backup is not a simple repeat of previous satellites, but has been upgraded to improve its reliability, said Yang.

      It carries a rubidium clock, which is the key to the accuracy of its positioning and timing.

      When China began reform and opening-up 40 years ago, its satellites mainly used costly imported rubidium clocks. After the launch of the Beidou program, the United States banned exports of rubidium clocks to China.

      Sun Jiadong, chief designer of the Beidou system and an academician of Chinese Academy of Engineering, said China must depend on itself.

      China's first self-developed rubidium clock was tested on a satellite in September 2006. The performance of China's rubidium clocks was improved on Beidou-2 satellites.

      This year will see an intensive launch of Beidou satellites. The system is expected to provide navigation and positioning services to countries along the Belt and Road by late 2018. By around 2020, the Beidou system will go global.

      The Beidou-3 satellites can send signals that are compatible with other satellite navigation systems and provide satellite-based augmentation, as well as search and rescue services in accordance with international standards. The positioning accuracy is 2.5 to 5 meters.

      The Beidou system will coordinate with other technology, such as remote sensing, the Internet, big data and cloud computing, in future.

      In the past five years, the system has helped rescue more than 10,000 fishermen. More than 40,000 fishing vessels and around 4.8 million commercial vehicles in China have been equipped with Beidou, said Beidou spokesperson Ran Chengqi.

      China has sold more than 50 million domestically manufactured chips connected to the Beidou navigation and positioning system in the past five years.

      By 2020, the value of China's satellite navigation business is expected to surpass 400 billion yuan (about 58 billion U.S. dollars), of which 240 billion to 320 billion yuan will go to the Beidou system, Ran said.?

         1 2 Next  

      KEY WORDS: Beidou
      EXPLORE XINHUANET
      010020070750000000000000011100001373130981
      主站蜘蛛池模板: 免费少妇荡乳情欲视频| 国产精品无码一区二区三级| 久久综合综合久久综合| 狠狠色先锋资源网| 国产亚av手机在线观看| 3d玉蒲团之极乐宝鉴| 尤物精品视频一区二区三区| 久久精品国产精品亚洲精品| 毛茸茸性XXXX毛茸茸毛茸茸| 啊灬啊灬别停啊灬用力| 成人在线手机视频| 国产色a在线观看| 一二三四社区在线中文视频 | 国产成人综合亚洲绿色| 99久久精品国产免费| 成人毛片无码一区二区三区| 久热国产在线视频| 欧美日韩在线观看一区二区| 免费看特黄特黄欧美大片| 色综合五月婷婷| 国产无遮挡又黄又爽在线观看| 97国产精品视频观看一| 小东西怎么流这么多水怎么办| 久久天堂成人影院| 欧美jizz18性欧美| 亚洲熟妇无码av在线播放| 粗大黑硬长爽猛欧美视频| 国产v亚洲v欧美v专区| 黑人video| 国产精品久久久久无码av| 99久久人人爽亚洲精品美女| 宅男噜噜噜66在线观看网站| 久久99国产一区二区三区| 日韩欧美亚洲综合久久| 亚洲国产AV一区二区三区四区| 波多野结衣在线视频观看| 免费极品av一视觉盛宴| 美女扒开尿口让男人桶免费网站| 国产亚洲综合成人91精品| 成人观看网站a| 国产福利91精品一区二区三区|