samsara
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China Space Military：Recon, Satcom, Navi, ASAT/BMD, Orbital Vehicle, SLV, etc.
- Thread starter kvLin
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samsara
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China holds world's first 'unhackable' quantum videoconference in secure communication breakthrough
PUBLISHED: 23:09 BST, 29 September 2017 | UPDATED: 23:09 BST, 29 September 2017
It could herald the start of a new era of ultrasecure communications that can never be hacked.
China has held the world's first quantum intercontinental video conference between laboratories in Beijing and Vienna.
The call was held using a new world first space-ground quantum communication network that experts say could revolutionise how humans connect.
Quantum messaging represents the safest possible form of communication we can achieve because it is unhackable.
China has held the world's first quantum intercontinental video conference between laboratories in
Beijing and Vienna. The call was held using a new space-ground quantum communication network
- also a world first - that could revolutionise how humans connect
Traditional public key cryptography, used in most modern internet communications including emails, usually relies on the perceived computational intractability of certain mathematical functions.
In contrast, quantum key distribution (QKD) uses single photons in quantum superposition states to guarantee unconditional security between distant parties.
The call was held between President Chunli Bai of Beijing's Chinese Academy of Sciences and President Anton Zeilinger of Vienna's Austria Academy of Sciences.
The Chinese science academy said the encrypted communication system was being trialled for potential 'real-world applications by government, banks, securities and insurance companies'.
There are plans to carry out similar test conversations between someone in China and four other places, Singapore, Italy, Germany and Russia.
Technical reasons had previously limited such conversations to distances of a few hundred kilometres, the academy said, but they had found a 'promising solution to this problem' involving a 'sophisticated satellite, named Micius'.
It is equipped with 'a decoy-state QKD transmitter, an entangled-photon source, and a quantum teleportation receiver and analyser'.
As the satellite moves through its orbit, its distance from the Tibetan ground station varies from
500 km to 1400 km (310.7 – 869.9 miles). In the up-link approach, the transmitter is located at
the ground station, while the satellite acts as the receiver, as illustrated
Five ground stations have also been built across China, including in the Tibetan Plateau.
Earlier this year scientists in China successfully transmitted entangled photons farther than ever before, achieving a distance of up to 1,400 kilometers (870 miles) between suborbital space and Earth.
Using the same 'quantum satellite' Micius, the scientists were able to to transmit a photon from an entangled pair from the ground station in Tibet to the orbiting craft, in what's known as an uplink configuration.
The 1,300 pound (590 kg) craft satellite is equipped with a laser beam, which the scientists subjected to a beam splitter.
This gave the beam two distinct polarized states.
In the uplink approach, the transmitter is located at the ground station, while the satellite acts as the receiver.
Not only did the team successfully transmit single-photon qubits over hundreds of miles for the first time, but they managed to do it for six input states, to 'demonstrate that the quantum teleportation is universal.'
http://www.dailymail.co.uk/sciencetech/article-4930302/China-holds-world-s-quantum-video-call.html
WHAT IS QUANTUM ENTANGLEMENT?
In quantum physics, entangled particles remain connected so that actions performed by one affects the behaviour of the other, even if they are separated by huge distances.
This means if you measure, 'up' for the spin of one photon from an entangled pair, the spin of the other, measured an instant later, will be 'down' - even if the two are on opposite sides of the world.
Entanglement takes place when a part of particles interact physically. For instance, a laser beam fired through a certain type of crystal can cause individual light particles to be split into pairs of entangled photons.
The theory that so riled Einstein is also referred to as 'spooky action at a distance'. Einstein wasn't happy with theory, because it suggested that information could travel faster than light.
- The call was held using world first space-ground quantum comms network
- System will be used by government, banks, securities and insurance firms
PUBLISHED: 23:09 BST, 29 September 2017 | UPDATED: 23:09 BST, 29 September 2017
It could herald the start of a new era of ultrasecure communications that can never be hacked.
China has held the world's first quantum intercontinental video conference between laboratories in Beijing and Vienna.
The call was held using a new world first space-ground quantum communication network that experts say could revolutionise how humans connect.
Quantum messaging represents the safest possible form of communication we can achieve because it is unhackable.
China has held the world's first quantum intercontinental video conference between laboratories in
Beijing and Vienna. The call was held using a new space-ground quantum communication network
- also a world first - that could revolutionise how humans connect
Traditional public key cryptography, used in most modern internet communications including emails, usually relies on the perceived computational intractability of certain mathematical functions.
In contrast, quantum key distribution (QKD) uses single photons in quantum superposition states to guarantee unconditional security between distant parties.
The call was held between President Chunli Bai of Beijing's Chinese Academy of Sciences and President Anton Zeilinger of Vienna's Austria Academy of Sciences.
The Chinese science academy said the encrypted communication system was being trialled for potential 'real-world applications by government, banks, securities and insurance companies'.
There are plans to carry out similar test conversations between someone in China and four other places, Singapore, Italy, Germany and Russia.
Technical reasons had previously limited such conversations to distances of a few hundred kilometres, the academy said, but they had found a 'promising solution to this problem' involving a 'sophisticated satellite, named Micius'.
It is equipped with 'a decoy-state QKD transmitter, an entangled-photon source, and a quantum teleportation receiver and analyser'.
As the satellite moves through its orbit, its distance from the Tibetan ground station varies from
500 km to 1400 km (310.7 – 869.9 miles). In the up-link approach, the transmitter is located at
the ground station, while the satellite acts as the receiver, as illustrated
Five ground stations have also been built across China, including in the Tibetan Plateau.
Earlier this year scientists in China successfully transmitted entangled photons farther than ever before, achieving a distance of up to 1,400 kilometers (870 miles) between suborbital space and Earth.
Using the same 'quantum satellite' Micius, the scientists were able to to transmit a photon from an entangled pair from the ground station in Tibet to the orbiting craft, in what's known as an uplink configuration.
The 1,300 pound (590 kg) craft satellite is equipped with a laser beam, which the scientists subjected to a beam splitter.
This gave the beam two distinct polarized states.
In the uplink approach, the transmitter is located at the ground station, while the satellite acts as the receiver.
Not only did the team successfully transmit single-photon qubits over hundreds of miles for the first time, but they managed to do it for six input states, to 'demonstrate that the quantum teleportation is universal.'
http://www.dailymail.co.uk/sciencetech/article-4930302/China-holds-world-s-quantum-video-call.html
WHAT IS QUANTUM ENTANGLEMENT?
In quantum physics, entangled particles remain connected so that actions performed by one affects the behaviour of the other, even if they are separated by huge distances.
This means if you measure, 'up' for the spin of one photon from an entangled pair, the spin of the other, measured an instant later, will be 'down' - even if the two are on opposite sides of the world.
Entanglement takes place when a part of particles interact physically. For instance, a laser beam fired through a certain type of crystal can cause individual light particles to be split into pairs of entangled photons.
The theory that so riled Einstein is also referred to as 'spooky action at a distance'. Einstein wasn't happy with theory, because it suggested that information could travel faster than light.
Last edited:
that's russian cargo plane concept designed by university student
cirr
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samsara
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China launches remote sensing satellite for Venezuela
Xinhua, October 9, 2017
China launches Venezuela's remote sensing satellite, VRSS-2, into a preset orbit from
the Jiuquan Satellite Launch Center in northwest China's Gobi desert at 12:13 on Monday.[Photo/spacechina.com]
China launched Venezuela's remote sensing satellite, VRSS-2, into a preset orbit from the Jiuquan Satellite Launch Center in northwest China's Gobi desert at 12:13 on Monday.
The VRSS-2 was the third satellite jointly launched by China and Venezuela, and also the later's second remote sensing satellite. It will be primarily used by Venezuela for land resources inspection, environmental protection, disaster monitoring and management, crop yield estimation and city planning.
The satellite was launched by a Chinese Long March-2D carrier rocket which was designed by Shanghai Academy of Spaceflight Technology.
This was the 252nd flight mission for the Long March rocket family.
In 2008, China launched Venezuela's first satellite -- the Venesat-1, or "Simon Bolivar" -- which carried communications facilities.
In 2012, Venezuela's first remote sensing satellite, the VRSS-1, was launched into space from China.
http://www.china.org.cn/world/2017-10/09/content_41703101.htm
Xinhua, October 9, 2017
the Jiuquan Satellite Launch Center in northwest China's Gobi desert at 12:13 on Monday.[Photo/spacechina.com]
China launched Venezuela's remote sensing satellite, VRSS-2, into a preset orbit from the Jiuquan Satellite Launch Center in northwest China's Gobi desert at 12:13 on Monday.
The VRSS-2 was the third satellite jointly launched by China and Venezuela, and also the later's second remote sensing satellite. It will be primarily used by Venezuela for land resources inspection, environmental protection, disaster monitoring and management, crop yield estimation and city planning.
The satellite was launched by a Chinese Long March-2D carrier rocket which was designed by Shanghai Academy of Spaceflight Technology.
This was the 252nd flight mission for the Long March rocket family.
In 2008, China launched Venezuela's first satellite -- the Venesat-1, or "Simon Bolivar" -- which carried communications facilities.
In 2012, Venezuela's first remote sensing satellite, the VRSS-1, was launched into space from China.
http://www.china.org.cn/world/2017-10/09/content_41703101.htm
JSCh
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BeiDou surpasses GPS in China
By Chu Daye Source:Global Times Published: 2017/10/12 22:03:39
Widespread use in home market ensures success: experts
People look at a model of China's homegrown BeiDou Navigation Satellite System at an exhibition in Xi'an, capital of Northwest China's Shaanxi Province in April. Photo: VCG
Experts said China's BeiDou Navigation Satellite System (BDS) has surpassed the US-developed Global Positioning System (GPS) after having made great progress in the past few years, during which the homegrown system has found widespread application on an industrial scale in both China and the global market.
Huang Haihui, an executive at the Shenzhen-listed Beijing UniStrong Science & Technology Co, said that while the relationship between BDS and GPS is not a zero-sum game, BDS has already surpassed GPS in the Chinese market in terms of the number of chips that receive signals from the system. Huang's firm, which uses BDS, is a leader in the geospatial market.
Today, a great many chips receive signals sent by both GPS and BDS for added precision. And chips that integrate BDS and GPS are sold on the market for the same price as GPS-only chips, with the entry-level chips selling at less than 10 yuan ($1.5), according to experts.
"Not only has BDS surpassed GPS in that sense, it is also advancing in the global market, in which the system can engage in a wrist-wrestling game with the latter. In the Southeast Asian market, BDS has the upper hand," Huang told the Global Times on Thursday.
Wang Bo, a leading global navigation satellite systems (GNSS) scientist with the Beijing Institute of Technology, also echoed that sentiment, saying that, in terms of industrial output value, BDS is beating GPS in the Chinese market.
According to an industry white paper, the overall output value of the GNSS and location-based services market in China reached 211.8 billion yuan in 2016, up 22.06 percent from the previous year. And for the industry's core output, BDS contributed 70 percent.
Wang said that the growth of BDS is consistent with the rapid growth of China's national strength. "Such growth is due to the urgent and immense market demand generated in China. There is a lot of new demand created in China, which does not exist in the ecosystem for GPS."
"The growth of BDS is associated with new emerging industries in China, such as mobile Internet and the Internet of Things," Wang told the Global Times on Thursday. "For instance, BDS has applications in urban underground pipeline monitoring and driver license training. Such applications are not seen with GPS."
Wang said that the two systems are different in terms of constellation, communication capability and signal frequency. And these technological differences mean that BDS can perform more functions and is more precise than GPS.
Homegrown success
BDS has been independently developed by China. It is one of the four major GNSS in the world, along with the US-developed GPS, the EU's Galileo and Russia's Global Navigation Satellite System, known as GLONASS.
With the current BDS, China aims to serve countries along the Belt and Road routes as well as other neighboring countries by 2018, and is expected to launch another 35 satellites by 2020 to provide services to global users.
China had 23 BeiDou navigation satellites in orbit by the end of 2016, while GPS had 24 satellites.
Huang said the advantages and progress of BDS came with the mass adaptation of the technology in the vast Chinese market and the growth of Chinese companies in the industry.
BDS has now become a calling card for China, similar to bullet trains, Huang said.
"In the past five years, the application of BDS has expanded from the national defense sector into a number of new sectors and industries - civilian use in particular," Huang said.
"These applications are massive in scale and spread across many industries. In agriculture, tractors in the field and drones flying over for inspection and monitoring are connected with BDS," he noted.
"At construction sites, engineering machinery is equipped with BDS. And at the consumer end, more and more handsets have chips that accommodate both GPS and BDS," Huang said.
"The competition is in many areas - in technology, the patents pool and the market scale. It is more than the competition between the two navigation systems; it is also competition between companies in the industrial chain of the navigation business," Huang said, adding that Chinese navigation firms have been expanding their global footprint via mergers and acquisitions in the past five years.
"The common belief that GPS is dominant [in the Chinese market] is just wrong," Wang said.
By Chu Daye Source:Global Times Published: 2017/10/12 22:03:39
Widespread use in home market ensures success: experts
Experts said China's BeiDou Navigation Satellite System (BDS) has surpassed the US-developed Global Positioning System (GPS) after having made great progress in the past few years, during which the homegrown system has found widespread application on an industrial scale in both China and the global market.
Huang Haihui, an executive at the Shenzhen-listed Beijing UniStrong Science & Technology Co, said that while the relationship between BDS and GPS is not a zero-sum game, BDS has already surpassed GPS in the Chinese market in terms of the number of chips that receive signals from the system. Huang's firm, which uses BDS, is a leader in the geospatial market.
Today, a great many chips receive signals sent by both GPS and BDS for added precision. And chips that integrate BDS and GPS are sold on the market for the same price as GPS-only chips, with the entry-level chips selling at less than 10 yuan ($1.5), according to experts.
"Not only has BDS surpassed GPS in that sense, it is also advancing in the global market, in which the system can engage in a wrist-wrestling game with the latter. In the Southeast Asian market, BDS has the upper hand," Huang told the Global Times on Thursday.
Wang Bo, a leading global navigation satellite systems (GNSS) scientist with the Beijing Institute of Technology, also echoed that sentiment, saying that, in terms of industrial output value, BDS is beating GPS in the Chinese market.
According to an industry white paper, the overall output value of the GNSS and location-based services market in China reached 211.8 billion yuan in 2016, up 22.06 percent from the previous year. And for the industry's core output, BDS contributed 70 percent.
Wang said that the growth of BDS is consistent with the rapid growth of China's national strength. "Such growth is due to the urgent and immense market demand generated in China. There is a lot of new demand created in China, which does not exist in the ecosystem for GPS."
"The growth of BDS is associated with new emerging industries in China, such as mobile Internet and the Internet of Things," Wang told the Global Times on Thursday. "For instance, BDS has applications in urban underground pipeline monitoring and driver license training. Such applications are not seen with GPS."
Wang said that the two systems are different in terms of constellation, communication capability and signal frequency. And these technological differences mean that BDS can perform more functions and is more precise than GPS.
Homegrown success
BDS has been independently developed by China. It is one of the four major GNSS in the world, along with the US-developed GPS, the EU's Galileo and Russia's Global Navigation Satellite System, known as GLONASS.
With the current BDS, China aims to serve countries along the Belt and Road routes as well as other neighboring countries by 2018, and is expected to launch another 35 satellites by 2020 to provide services to global users.
China had 23 BeiDou navigation satellites in orbit by the end of 2016, while GPS had 24 satellites.
Huang said the advantages and progress of BDS came with the mass adaptation of the technology in the vast Chinese market and the growth of Chinese companies in the industry.
BDS has now become a calling card for China, similar to bullet trains, Huang said.
"In the past five years, the application of BDS has expanded from the national defense sector into a number of new sectors and industries - civilian use in particular," Huang said.
"These applications are massive in scale and spread across many industries. In agriculture, tractors in the field and drones flying over for inspection and monitoring are connected with BDS," he noted.
"At construction sites, engineering machinery is equipped with BDS. And at the consumer end, more and more handsets have chips that accommodate both GPS and BDS," Huang said.
"The competition is in many areas - in technology, the patents pool and the market scale. It is more than the competition between the two navigation systems; it is also competition between companies in the industrial chain of the navigation business," Huang said, adding that Chinese navigation firms have been expanding their global footprint via mergers and acquisitions in the past five years.
"The common belief that GPS is dominant [in the Chinese market] is just wrong," Wang said.
JSCh
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100 days mark.A cabin on the moon? China hones the lunar lifestyle
Source: Xinhua| 2017-05-10 23:37:10|Editor: ZD
Four volunteers take the oath in front of the Lunar Palace 1, a facility for conducting bio-regenerative life-support systems experiments key to setting up a lunar base, in Beijing University for Aeronautics and Astronautics (BUAA) in Beijing, capital of China, May 10, 2017. A ceremony was held in the BUAA on Wednesday as 8 volunteers start a 365-day experiment in two groups in the Lunar Palace 1. (Xinhua/Ju Huanzong)
BEIJING, May 10 (Xinhua) -- While it remains unclear exactly how long China's first lunar explorers will spend on the surface, the country is already planning for longer stays.
Eight Chinese volunteers will live in "Yuegong-1," a simulated space "cabin" in Beijing for the next year, strengthening China's knowledge and technical know-how, and helping the country's scientists understand exactly what will be required for humans to remain on the moon in the medium and long terms.
The volunteers, all civilians and elite postgraduate students from Beihang University, are divided into two groups. The first four stepped into Yuegong-1 on Wednesday. The two men and two women will stay in the cabin for 60 days, then be replaced by the second group, also two men and two women, who will stay there for 200 days. After that, the first group will return for the remaining 105 days.
The experiment, code-named "Yuegong-365," is Beihang's second attempt to see how the Bioregenerative Life Support System (BLSS) works in a moon-like environment. A successful 105-day trial was conducted in 2014.
The BLSS is a system where animals, plants and microorganisms co-exist. Water and food can be recycled in the system, creating an earth-like environment.
"The BLSS is absolutely crucial to probes to the moon and to Mars," said Liu Zhiheng of the Chinese Academy of Sciences. "The latest test is vital to the future of China's moon and Mars missions and must be relied upon to guarantee the safety and health of our astronauts."
Liu Hong, chief designer of "Yuegong-1," said that the purpose of the new program is to test the stability of the BLSS when astronauts with different metabolic rates take turns to live in the cabin and when they face sudden situations such as blackouts.
"Yuegong-1" consists of a major living space and two plant cabins: "greenhouses." The major cabin covers 42 square meters the size of a very small urban apartment while each of the plant cabins is 3.5 meters high and 50 to 60 square meters in area. The major cabin hosts four bed cubicles, a common room, a washroom, a waste-treatment room and an animal-raising room. The system allows four "astronauts" to conduct research while their basic needs are met.
samsara
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CCTV program showing delivery of double Beidou-3 satellite.
According to social media user, launch window would start from 3rd Nov, atop CZ-3B/YZ-1, from Xichang launch center.
From web, picture of launch site posted 22nd Oct.
According to social media user, launch window would start from 3rd Nov, atop CZ-3B/YZ-1, from Xichang launch center.
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cirr
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Super good news for China's hypersonic vehicle programmes
【我校粉末冶金研究院范景莲教授荣获何梁何利基金“科学与技术进步奖”】
10月25日，何梁何利基金2017年度颁奖大会在北京钓鱼台国宾馆举行。我校粉末冶金研究院范景莲教授荣获何梁何利基金“科学与技术进步奖”。
20年来，范景莲教授带领团队一直致力于新型高性能难熔金属材料的开发与应用研究，提出了“纳米复合/微纳复合”富有创新性的设计思想，开发了高性能纳米复合细晶钨基复合材料，实现了复合材料的高强韧和高精度控制；发明了新一代超高温难熔金属基复合材料，实现材料高温强韧、长时间抗烧蚀和轻量化一体化设计，材料高温强度相比现有高温难熔金属提高5倍以上，长时间抗烧蚀温度达到了2000℃-3000℃，突破了超高速飞行器和火箭发动机等超高温领域最突出的高温材料抗烧蚀、抗变形等瓶颈问题，为超高速飞行器和高能发动机研制关键超高温材料提供了保障。
【我校粉末冶金研究院范景莲教授荣获何梁何利基金“科学与技术进步奖”】
10月25日，何梁何利基金2017年度颁奖大会在北京钓鱼台国宾馆举行。我校粉末冶金研究院范景莲教授荣获何梁何利基金“科学与技术进步奖”。
20年来，范景莲教授带领团队一直致力于新型高性能难熔金属材料的开发与应用研究，提出了“纳米复合/微纳复合”富有创新性的设计思想，开发了高性能纳米复合细晶钨基复合材料，实现了复合材料的高强韧和高精度控制；发明了新一代超高温难熔金属基复合材料，实现材料高温强韧、长时间抗烧蚀和轻量化一体化设计，材料高温强度相比现有高温难熔金属提高5倍以上，长时间抗烧蚀温度达到了2000℃-3000℃，突破了超高速飞行器和火箭发动机等超高温领域最突出的高温材料抗烧蚀、抗变形等瓶颈问题，为超高速飞行器和高能发动机研制关键超高温材料提供了保障。
JSCh
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NOTAM is out,
A3292/17 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N180540E1115053-N184350E1111900-N181640E1104331-N173836E1111528 BACK TO START.VERTICAL LIMITS:SFC-UNL. SFC - UNL, 05 NOV 11:30 2017 UNTIL 05 NOV 12:03 2017. CREATED: 02 NOV 02:33 2017
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