China satellites info, news & updates

[cirr]

China hopes to cover flights and trains with internet under new satellite plan

2017-02-17 09:36

CRIENGLISH.com Editor: Wang Fan

China launches the world's first quantum communication satellite on top of a Long March-2D rocket from the Jiuquan Satellite Launch Center in Jiuquan, northwest China's Gansu Province, Aug. 16, 2016. (Photo/Xinhua)

China is hoping to make the internet available in aircraft cabins, high speed trains or even remote mountainous areas, thanks to six communication satellites it's planning to send into orbit this year, according to China National Radio.

The first satellite - Shijian-13 - is to be launched on a Long March 3B (also known as the CZ-3B) rocket from the Xichang Satellite Launch Center (XSLC) in April.

Shi Jian 13 is an experimental geostationary satellite, designed to test electric propulsion, with an orbital life of 15 years, according to Gunter's Space Page.

Deputy chief designer, Wang Min, says it's the country's first high-throughput satellite (HTS). It's capable of relaying traffic many times the speed of traditional fixed satellite services (FSS), for the same amount of allocated frequency on orbit, according to intelsat.com.

Later in the year, the scientific research satellite Shijian-18 will be delivered into orbit by the Long March 5B rocket in mid-2017, according to Space Flights News.

Zhou Zhicheng, director of the communications satellite department of the China Academy of Space Technology, said the launch of these communications satellites will help improve the prospects for China's satellite mobile communications system.

On a global scale, 24 communications satellites operating in orbit currently were manufactured by Chinese organizations, according to China National Radio.

http://www.ecns.cn/2017/02-17/245734.shtml

 

[cirr]

Powerful new satellite to be launched in April

2017-02-17 08:49

China Daily Editor: Wang Fan

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.

http://www.ecns.cn/2017/02-17/245689.shtml

LIPS-300 ion propulsion system


中国将发射首颗高通量通信卫星 利用激光天地通信

17.02.2017

随着我国新一代通信卫星技术的提升，未来利用通信卫星覆盖，在飞机机舱内、高速运行的高铁上，甚至偏远山区，便捷上网将成为现实。
　　
据中国之声《新闻纵横》报道， 2017年，我国计划发射实践十三号、中星9A、实践十八号等6颗通信卫星。其中，实践十三号将于今年4月发射，这将是中国首颗高通量通信卫星。

据央广网报道，今年4月，实践十三号卫星将首先由长征三B运载火箭在西昌卫星发射中心发射。
　　
实践十三号卫星副总师王敏介绍，实践十三号是我国首颗高通量通信卫星，首次应用Ka频段多波束宽带通信系统，是国内首个采用电推进技术的高轨卫星，还将利用激光开展天地通信。该卫星的国产化水平在中国高轨长寿命通信卫星中达到新高度，“关键核心单机实现自主可控，平台产品国产化率达到100%”。
　　
王敏还介绍说，高通量卫星的“通”指的是“通信”，其通信容量将比以往跃升一两个数量级。“实践十三号”通信总容量超过20Gbps，已超过中国此前研制的通信卫星容量总和。
　　
而卫星通信容量的扩大，意味着传送能力更强。王敏举例说，原有的通信卫星能够同时传送七、八十套标清电视节目，现在可以同时传送七、八十套高清电视节目，未来还可以同时传送数量更多的4K节目。
　　
广播电视信号的传输，是通信卫星的重要任务之一。去年的巴西里约奥运会，观众足不出户就能看到地球另一端的中国女排夺冠。中国航天科技集团五院通信卫星事业部部长周志成表示：“老百姓体会不到卫星做了什么，一旦出了问题就会体会到，比如国家广播电视传输，假如有故障中断，立刻电视信号就没有了。”
　　
此外，通信卫星还能解决移动基站不能全面覆盖信号的问题。很多人都会有这样的经历，在高速运行的高铁列车上手机信号会时断时续，在飞机的机舱内无法使用手机上网，或者偏远山区根本没有手机信号。
　　
王敏表示，通信卫星就能够解决这些问题。“最直观的感受是，原来都是服务于广播电视、骨干网政府用户、企业用户、大用户，现在可以服务于普通的个人用户，比如随身带着wifi的转接器，就可以把卫星信号变为wifi，将来像航空通信、高铁等地面覆盖网能力不够的地方，可以做很好地补充。”
　　
王敏还说，实践十三号”将验证东方红三号B平台，在完成试验验证以后，实践十三号卫星将纳入“中星”系列，命名为“中星16号”。
　　
按照计划，实践十三号卫星发射后，我国将在今年年中发射实践十八号卫星，这将使我国真正跻身国际一流通信卫星的“俱乐部”。周志成表示，实践十八号卫星将对东方红五号卫星平台技术进行验证。东五平台是中国下一代地球同步轨道大型卫星公用平台，具有“高承载、大功率、高散热、长寿命、可扩展、多适应”等特点。
　　
周志成说，包括“实践十三号”、“实践十八号”在内，五院通信卫星事业部今年计划发射6颗通信卫星，比如用于广播和通信的地球静止轨道通信卫星“中星9A”及“中星6C ”。据了解，目前中国制造的在轨通信卫星数量为24颗。
　　
周志成还说，让老百姓得到实惠，比如爬山或者发生自然灾害，中国的卫星通信在哪？大家只知道汶川地震时有“北斗系统”提供短报文的服务，如果现在给政府配备天通系统应用之后，有突发情况，完全可以应急。
　　
据了解，中国航天科技集团五院通信卫星事业部已有40年的通信卫星研制经验，曾研制中国第一颗人造地球卫星“东方红一号”、中国第一颗整星商业出口卫星“尼日利亚卫星”、中国第一代中继卫星系统“天链一号”等。

通信卫星, 十三号, 卫星, 王敏, 中星

http://mil.news.sina.com.cn/china/2017-02-17/doc-ifyarrcf4350923.shtml

 

[Tshering22]

Amazing stuff, guys.

Congratulations and hope to see this coming true.

 

[Beast]

Powerful new satellite to be launched in April

2017-02-17 08:49

China Daily Editor: Wang Fan

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.

http://www.ecns.cn/2017/02-17/245689.shtml


中国将发射首颗高通量通信卫星 利用激光天地通信

17.02.2017

随着我国新一代通信卫星技术的提升，未来利用通信卫星覆盖，在飞机机舱内、高速运行的高铁上，甚至偏远山区，便捷上网将成为现实。
　　
据中国之声《新闻纵横》报道， 2017年，我国计划发射实践十三号、中星9A、实践十八号等6颗通信卫星。其中，实践十三号将于今年4月发射，这将是中国首颗高通量通信卫星。

据央广网报道，今年4月，实践十三号卫星将首先由长征三B运载火箭在西昌卫星发射中心发射。
　　
实践十三号卫星副总师王敏介绍，实践十三号是我国首颗高通量通信卫星，首次应用Ka频段多波束宽带通信系统，是国内首个采用电推进技术的高轨卫星，还将利用激光开展天地通信。该卫星的国产化水平在中国高轨长寿命通信卫星中达到新高度，“关键核心单机实现自主可控，平台产品国产化率达到100%”。
　　
王敏还介绍说，高通量卫星的“通”指的是“通信”，其通信容量将比以往跃升一两个数量级。“实践十三号”通信总容量超过20Gbps，已超过中国此前研制的通信卫星容量总和。
　　
而卫星通信容量的扩大，意味着传送能力更强。王敏举例说，原有的通信卫星能够同时传送七、八十套标清电视节目，现在可以同时传送七、八十套高清电视节目，未来还可以同时传送数量更多的4K节目。
　　
广播电视信号的传输，是通信卫星的重要任务之一。去年的巴西里约奥运会，观众足不出户就能看到地球另一端的中国女排夺冠。中国航天科技集团五院通信卫星事业部部长周志成表示：“老百姓体会不到卫星做了什么，一旦出了问题就会体会到，比如国家广播电视传输，假如有故障中断，立刻电视信号就没有了。”
　　
此外，通信卫星还能解决移动基站不能全面覆盖信号的问题。很多人都会有这样的经历，在高速运行的高铁列车上手机信号会时断时续，在飞机的机舱内无法使用手机上网，或者偏远山区根本没有手机信号。
　　
王敏表示，通信卫星就能够解决这些问题。“最直观的感受是，原来都是服务于广播电视、骨干网政府用户、企业用户、大用户，现在可以服务于普通的个人用户，比如随身带着wifi的转接器，就可以把卫星信号变为wifi，将来像航空通信、高铁等地面覆盖网能力不够的地方，可以做很好地补充。”
　　
王敏还说，实践十三号”将验证东方红三号B平台，在完成试验验证以后，实践十三号卫星将纳入“中星”系列，命名为“中星16号”。
　　
按照计划，实践十三号卫星发射后，我国将在今年年中发射实践十八号卫星，这将使我国真正跻身国际一流通信卫星的“俱乐部”。周志成表示，实践十八号卫星将对东方红五号卫星平台技术进行验证。东五平台是中国下一代地球同步轨道大型卫星公用平台，具有“高承载、大功率、高散热、长寿命、可扩展、多适应”等特点。
　　
周志成说，包括“实践十三号”、“实践十八号”在内，五院通信卫星事业部今年计划发射6颗通信卫星，比如用于广播和通信的地球静止轨道通信卫星“中星9A”及“中星6C ”。据了解，目前中国制造的在轨通信卫星数量为24颗。
　　
周志成还说，让老百姓得到实惠，比如爬山或者发生自然灾害，中国的卫星通信在哪？大家只知道汶川地震时有“北斗系统”提供短报文的服务，如果现在给政府配备天通系统应用之后，有突发情况，完全可以应急。
　　
据了解，中国航天科技集团五院通信卫星事业部已有40年的通信卫星研制经验，曾研制中国第一颗人造地球卫星“东方红一号”、中国第一颗整星商业出口卫星“尼日利亚卫星”、中国第一代中继卫星系统“天链一号”等。

通信卫星, 十三号, 卫星, 王敏, 中星

http://mil.news.sina.com.cn/china/2017-02-17/doc-ifyarrcf4350923.shtml

The article by Chinese is too modest , if SJ statellite is success. It will put China ahead of European and USA commercial communication satellite.

 

[AndrewJin]

Great.
But inside tunnels (another 20km long high speed railway tunnel opens today) traditional methods are still needed.

 

[terranMarine]

Great.
But inside tunnels (another 20km long high speed railway tunnel opens today) traditional methods are still needed.

A good reminder

 

[cirr]

SJ-18

我国今年将发射6颗通信卫星　实践十八号将乘“胖五”火箭升空

新华网

2017-02-17 20:32:13

新华社北京２月１７日电（记者白国龙）记者１７日从中国航天科技集团公司五院获悉，我国２０１７年计划发射实践十三号、实践十八号、中星９Ａ、中星９Ｃ等共６颗通信卫星，其中实践十八号卫星计划于６月由有“胖五”之称的长征五号运载火箭送入轨道。

据中国航天科技集团公司五院通信卫星事业部副部长王敏介绍，起飞重量达７吨的实践十八号卫星应用了量子通信、新型霍尔电推进等系统，将对东方红五号卫星平台的关键技术进行在轨试验验证。

据介绍，东方红五号卫星平台是我国自主研发的承载能力最大的新一代通信卫星平台，具有大功率、高散热、长寿命、可扩展、多适应等特点，性能相比现役的东方红三号、东方红四号平台有很大提升，与国际上最先进的通信卫星平台相当。

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