日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

Powerful new satellite to be launched in April

By Zhao Lei | China Daily | Updated: 2017-02-17 07:24

It will be part of a huge network that will expand the nation's Wi-Fi access

China will launch its most advanced communications satellite in April as it builds a large capacity network that will enable passengers on jetliners and high-speed trains to use the internet.

Shijian 13, developed by the China Academy of Space Technology, will be lifted on a Long March 3B carrier rocket from Xichang Satellite Launch Center in Sichuan province.

The satellite, which weighs 4.6 metric tons, will stay for 15 years in a geostationary orbit about 36,000 kilometers above Earth, the academy said.

The satellite features a Ka-band broadband communications system capable of transmitting 20 gigabytes of data per second, making it the most powerful communications satellite the nation has developed.

Shijian 13 will use electric propulsion after it enters orbit, which will extensively reduce the chemical fuel the satellite carries. Moreover, it will conduct space-to-ground laser communications experiments, the academy said.

In June, the Shijian 18 communications satellite, the first developed based on China's new-generation DFH 5 satellite platform, will be lifted by a Long March 5 rocket at the Wenchang Space Launch Center in Hainan province, according to the academy.

It said the transmission capacity of the satellite to be launched in June is double that of current Chinese communications satellites, allowing more television channels and clearer programs to be transmitted. The new satellite will also improve internet connectivity and accessibility as well as reduce users' costs.

Wang Min, deputy head of the academy's Institute of Telecommunication Satellite, said China plans to establish a constellation of advanced communications satellites based on DFH 4 and DFH 5 platforms by 2025 and, after the plan is fulfilled, people will be able to use high-quality Wi-Fi service anywhere and anytime, including on bullet trains and planes.

Li Feng, chief designer at the institute, said many domestic users have said they look forward to the service of new-generation communications satellites, while some foreign satellite operators have also expressed interest.

The academy has made seven communications satellites for overseas users, including Pakistan, Venezuela and Laos, and is implementing export contracts for more than 10 such satellites, said Zhou Zhicheng, head of the Institute of Telecommunication Satellite.

However, he said the country still needs to catch up with the top developers of communications satellites in the United States and Europe, such as Boeing and Thales Alenia Space, when it comes to satellite technology and capacity.

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 欧美手机在线 | 这里只有精品99re | 成人爽a毛片在线视频网站 婷婷色在线观看 | 天天舔天天射天天操 | 亚洲午夜精品视频 | 欧美一级毛片在线播放 | 国产一区二区三区在线 | 亚洲一区二区三区在线免费观看 | 欧洲另类一二三四区 | 天天久 | 99亚洲视频| wwwbnb89| 亚洲视频在线观看免费视频 | 欧美一区二区三区在线播放 | 亚洲福利在线观看 | 色屁屁www影院免费观看视频 | 欧美成人在线视频 | 亚洲一区二区三区四区五区中文 | 丁香5月婷婷 | 欧美日韩一区视频 | www.久久久.com | 日本高清免费不卡在线播放 | 欧美a级在线观看 | 九九资源站 | 污污成人一区二区三区四区 | 成人午夜视频在线观看 | 欧美精品aaa久久久影院 | 草久在线视频 | 婷婷国产在线观看 | 草久久免费视频 | 日产乱码卡一卡2卡三卡四麻豆 | 日本中文字幕一区二区有码在线 | 成人激情视频在线观看 | 国产三级在线精品男人的天堂 | 2021国产在线视频 | 欧洲色吧| 亚洲综合18p | 四虎影视永久免费观看网址 | 污版视频在线观看 | 天天色av| 亚州国产 |