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Thread: China's Science Revolution

  1. #91
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    "China's most advanced satellite launched into space"

    http://www.chinadaily.com.cn/a/20191...e355812a1.html

    China's biggest, heaviest and most advanced satellite was sent into space on Friday night to carry out demonstration and verification for advanced satellite and communication technologies.

    Shijian 20, a technology demonstration satellite developed by the China Academy of Space Technology in Beijing, was lifted into orbit by the third mission of the Long March 5 carrier rocket at the Wenchang Space Launch Center in Hainan province at 8:45 pm.

    It is the second satellite based on China's new-generation satellite platform, the DFH 5, after the Shijian 18 that was lost during Long March 5's failed second flight in July 2017.

    The satellite has a liftoff weight of more than 8 metric tons, carries more than 10 world-class technological payloads, and is equipped with the country's largest, longest and most sophisticated solar arrays. It is expected to work at least 16 years in a geosynchronous orbit about 36,000 kilometers above the Earth.
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  2. #92
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    "Chinese astronomers discover over 10,000 lithium-rich giant stars"

    http://www.xinhuanet.com/english/202..._138671895.htm

    Chinese astronomers have found more than 10,000 giant stars rich in lithium, surpassing the total number of such stars previously discovered by scientists around the world.

    The discovery was made by researchers from the National Astronomical Observatories of the Chinese Academy of Sciences based on data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), a special quasi-meridian reflecting Schmidt telescope located in Xinglong, in north China's Hebei Province.
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  3. #93
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    "China tests micro propulsion technology for space-based gravitational wave detection"

    http://www.xinhuanet.com/english/202..._138676475.htm

    Chinese space engineers have tested a micro propulsion technology on a recently launched satellite, which could be used in future space-based gravitational wave detection.

    Experts from the China Academy of Space Technology under the China Aerospace Science and Technology Corporation said they tested the variable thrust propulsion at the micronewton level on the Tianqin-1 satellite, which was sent into space on Dec. 20, 2019.

    The thrust of one micronewton is equivalent to the weight of a 1-cm-long hair. And the accuracy of the micro propulsion system of the Tianqin-1 satellite could reach 0.1 micronewtons, according to the experts.
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  4. #94
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    "China makes major breakthrough in space propulsion technology"

    http://www.ecns.cn/news/sci-tech/202...k2867430.shtml

    [QUOTEChina has made a major breakthrough in the development of the Hall-effect thruster (HET), an important space propulsion technology.

    Researchers from the China Aerospace Science and Technology Corporation (CASC) have developed the country's first HET with an input power of 20 kilowatts that can produce a thrust of one newton, marking a leap for China's HETs from millinewton level to newton level.

    The applications of HETs include control of the orientation and position of orbiting satellites and use as a main propulsion engine for medium-size robotic space vehicles.

    During a test, the thruster showed stable operation, with a specific impulse of 3068 seconds and working efficiency above 70 percent, reaching international advanced level.][/QUOTE]
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  5. #95
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    "Gigantic telescope helps nurture future astronomers in China"

    http://www.xinhuanet.com/english/202..._138733833.htm

    Graduate student Lin Quanwei did not immediately head home after the winter break began. Instead, he chose to stay at school to work on astronomy projects with his tutor.

    In late December 2019, Guizhou Normal University, where Lin studies, formally established its Department of Astronomy and announced cooperation with the National Astronomical Observatories of the Chinese Academy of Sciences.

    "We would not have set up the astronomy department, which is rare among Chinese universities, if it were not for FAST," said Dong Aijun, head of the department, referring to the acronym of the Five-hundred-meter Aperture Spherical radio Telescope, the world's largest and most sensitive radio telescope.
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  6. #96
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    China using its space assets, as well as information from USA and ESA to model the migration path and monitor the desert locusts.

    http://www.xinhuanet.com/english/202..._138832413.htm

    Chinese researchers have used satellite data and meteorological data to monitor desert locusts and offer early warnings, according to the Chinese Academy of Sciences (CAS).

    Researchers from the Aerospace Information Research Institute of the CAS analyzed satellite data generated by China's Gaofen series satellites, Landsat from the United States, and European Space Agency's Sentinel.

    They combined the data with global meteorological data and plant protection survey data and processed the data with pest prediction model and big data analysis on the digital earth science platform.

    They conducted research on the temporal and spatial distribution of desert locusts' reproduction and migration in Africa in February and made predictions on their migration to China.
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  7. #97
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    "China's polar-observing satellite completes Antarctic mission"

    http://www.xinhuanet.com/english/202..._138874031.htm

    China's first polar-observing satellite has completed its Antarctic observation mission after orbiting Earth for six months.

    Since it was launched on Sept. 12, 2019, the satellite called "Ice Pathfinder" (Code: BNU-1) has sent back more than 1,000 images covering the south polar region, according to a statement by its operation team Friday.

    It has observed two vast ice collapses in the continent, one occurred on the Amery Ice Shelf on Sept. 25, 2019, and the other on the Pine Island Glacier in February this year. The satellite has provided continuous monitoring of these ice calving events, obtaining key satellite imagery and data, said the operation team leader Chen Zhuoqi, also an associate professor of the School of Geospatial Engineering and Science under the Sun Yat-sen University in Guangzhou.

    Scientists of the satellite project have participated in the country's ongoing 36th Antarctic expedition. Apart from data acquisition of ground features near research base Zhongshan Station, they also used drone technology to do remote sensing research, to support "satellite-drone-ground" synchronous scientific experiments in the Antarctic.
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  8. #98
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    "China becomes world's top patent filer: UN"

    https://www.sinodaily.com/afp/200407....8q3fgozb.html

    China last year became the world leader in international patent filings, unseating the United States which had held the top spot for more than four decades, the UN said Tuesday.
    A record 265,800 international patent applications were filed last year, a hike of 5.2-percent from 2018, the World Intellectual Property Organisation said in its annual report.
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  9. #99
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    A report that debunks western media claims launch failures due to US chip restrictions, also highlights China progress in producing their own chips.

    https://www.globaltimes.cn/content/1185488.shtml

    Chinese space industry insiders on Monday debunked Western media claims that attest China's recent rocket launch failures to US chip export restrictions on China, pointing out that the country's rocket control systems have mastered complete localization for a long time, and China's space development sector is independent of any Western influence.

    German public broadcaster DW's Chinese language channel on Saturday cited a Taiwan-based military expert, who floated a conspiracy theory alleging the rising failure rate of China's space industry as being caused by US chip export restrictions as part of the US-led trade war against China.
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  10. #100
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    "Chinese researchers quantify water clarity with remote sensing data"

    http://www.xinhuanet.com/english/202..._139014829.htm

    Chinese researchers have mapped the country's water clarity of lakes and reservoirs in 30-meter resolution using remote sensing imagery data.

    Water clarity is a reliable indicator for quantifying eutrophic status, said their recently published research article in journal Remote Sensing of Environment. The researchers from the Northeast Institute of Geography and Agroecology of the Chinese Academy of Sciences collected 2,152 samples from 34 field campaigns from 2013 to 2018.

    Based on both measured data and Landsat OLI remote sensing data, they developed regression models to map water clarity with a 30-meter resolution at a national scale.
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  11. #101
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    "Jian-Wei Pan to Receive ZEISS Research Award"

    https://www.zeiss.com/corporate/int/...rch-award.html

    Jian-Wei Pan, Professor at the University of Science and Technology of China, in Hefei, is the winner of the prestigious ZEISS Research Award 2020. He is one of the world's leading researchers in the field of quantum technology. One of the most remarkable results of Jian-Wei Pan's research is the distribution of entangled photons over a distance of 1,200 km, by far the longest distance ever reached. He achieved this using a light source that is installed on a satellite and emits entangled photons.
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  12. #102
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    "China launches live online system of ocean satellite data"

    http://www.xinhuanet.com/english/202..._139056288.htm

    A live system of ocean satellite data archive and distribution has been launched in China, according to China Natural Resources News on Thursday.

    The massive ocean satellite data system, developed by the National Satellite Ocean Application Service of the Ministry of Natural Resources, has received 838 registered users and distributed data to 161 organizations.

    The distribution data received more than 20,000 visits, said the report.

    Users can check the daily, weekly and monthly archives and distribution of ocean satellite data on the WeChat account of the National Satellite Ocean Application Service.

    The system collects payload data of the Haiyang-1, Haiyang-2 series satellites and the China-France Oceanography Satellite.
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  13. #103
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    "Largest satellite completes testing"

    http://www.ecns.cn/news/sci-tech/202...v0966247.shtml

    China's biggest, heaviest and most advanced satellite has completed all of its major technology demonstrations and verifications, a testament to the efficient design of the country's new-generation satellite platform, the DFH 5, according to the China Academy of Space Technology.

    Shijian 20, a technology demonstration satellite developed by the Beijing-based academy, is tasked with conducting 84 in-orbit tests and experiments. As of now, all the major tests have been completed with "satisfactory results", the academy said in a statement.

    The finished tasks included the first orbital demonstrations for ultra-high-capacity communications, ultra-high-speed laser communications, electric propulsion and other advanced technologies.
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  14. #104
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    "China completes tests of gravitational-wave detection technologies in space"

    http://www.xinhuanet.com/english/202..._139076528.htm

    Chinese space scientists and engineers have finished testing key technologies for space-based gravitational-wave detection with a dedicated satellite.

    After the Tianqin-1 satellite was launched on Dec. 20, 2019, six key technologies have been tested over the past six months, including high-precision inertial sensing and micro-Newton propulsion, both of which are necessary to detect gravitational waves in space, said Luo Jun, president of Sun Yat-sen University and an academician of the Chinese Academy of Sciences.

    "The test results are better than the mission requirements," Luo said on Thursday.
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  15. #105
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    "China's low-orbit broadband communication satellite bears fruitful results"

    http://www.xinhuanet.com/english/202..._139079932.htm

    China's first technology experiment satellite for low-orbit broadband communication has completed more than 180 communication tests and generated fruitful results, according to its developer Friday.

    As the first satellite of the Hongyun Project, a low-orbit broadband communication satellite system developed by the China Aerospace Science and Industry Corporation (CASIC), it has worked stably for more than 8,800 hours, carried out more than 5,000 instructions and conducted more than 20 in-orbit observation tests on a spectral thermometer.
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  16. #106
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    "Adaptive Optics Technology Assists Geosynchronous Orbit Coherent Optical Communication Experiment"

    http://english.cas.cn/newsroom/resea...2_238157.shtml

    Recently, the laser communication team from the Institute of Optics and Electronics (IOE) of the Chinese Academy of Sciences (CAS) has applied adaptive optics (AO) technology to geosynchronous orbit coherent optical communication experiment.

    For a long time, the atmospheric turbulence effect of the star-ground link has caused signal beam wavefront distortion, spot dispersion and jitter, which affect the reception of ground signal light energy, especially the single-mode fiber reception of coherent laser communication. In order to achieve high-speed, high-reliability satellite-to-ground laser communication, the problem of atmospheric turbulence interference must be solved
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  17. #107
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    "Efficient remote sensing algorithm proposed for landslide monitoring"

    http://www.chinadaily.com.cn/a/20200...24115aa96.html

    Chinese researchers have designed an improved remote sensing method for more efficient landslide monitoring.

    Synthetic aperture radar (SAR) remote sensing is a potential technique for long-term monitoring of landslide-prone areas.

    Traditional pixel offset tracking methods work well for fast-moving landslides but still have some limitations.

    The researchers from the Chinese Academy of Sciences proposed the improved offset tracking method to optimize a more efficient workflow, as well as an improved algorithm based on homogeneous samples.
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  18. #108
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    "Chinese researchers explore satellite data-driven oceanic forecast"

    http://www.chinadaily.com.cn/a/20200...81725b551.html

    Chinese researchers have achieved progress in intelligent oceanic forecasting driven by satellite data, according to the Chinese Academy of Sciences (CAS).

    A joint team of researchers developed the purely satellite data-driven deep learning model for forecasting the evolution of sea surface temperature associated with the tropical instability wave, said the CAS.

    The team, led by Li Xiaofeng, a researcher of the Institute of Oceanology under the CAS, was composed of professionals from multiple institutions related to marine scientific research.
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  19. #109
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    "China opens first large-scale helium plant as it tries to reduce reliance on US imports"

    https://www.scmp.com/news/china/scie...t-tries-reduce

    China is a step closer to reducing its dependency on the imported helium it uses to make hi-tech products, according to scientists working at a new facility in the northwest of the country.
    They say they are extracting helium from the waste product of natural gas at the plant, and it could be the key to mass production in China.
    Helium is a noble gas, meaning it is stable and unlikely to react with other elements, even in an extreme environment. It is lightweight, colourless, and a rare resource.
    Nearly all helium used in China – whether to pump fuel for its huge Long March-5 rocket, to protect metal during welding, to produce laser light, or to create the super-clean environment needed to make computer chips – comes from elsewhere, mostly the United States or US-owned facilities in other countries.
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  20. #110
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    "Road test: Chinese 'robotaxis' take riders for a spin"

    https://www.sinodaily.com/afp/200809....8gx09uka.html

    Chinese entrants in the race to put autonomous vehicles on the road are bringing "robotaxis" online in hopes that a hired-car format can be the key to unlocking wide acceptance of the futuristic technology.
    It is expected to be years before cars that operate completely without human intervention are unleashed owing to lingering technological, regulatory, and safety hurdles.

    But as China challenges US tech dominance, Chinese players such as Baidu, Alibaba-backed AutoX and ride-sharing king DiDi Chuxing recently launched autonomous taxi pilot projects in cities around the country.

    Similar efforts are under way in the US, and AutoX's chief executive Xiao Jianxiong told AFP the first fully-autonomous vehicles could be on the roads by the end of the year.
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  21. #111
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    "China's IoT satellites verify laser links technology"

    http://www.xinhuanet.com/english/202..._139288478.htm

    China's satellites Xingyun-2 01 and 02 have verified key technologies for inter-satellite laser communication, according to the China Space Sanjiang Group Co. Ltd.

    The two satellites for China's space-based Internet of Things (IoT) project have established two-way communication with complete link process and stable telemetry, achieving a breakthrough in inter-satellite laser communication for the country's space-based IoT constellation.

    Inter-satellite laser communication uses laser to transmit image, voice, signal and other information in space. It has the advantages of high transmission rate, strong anti-jamming capability, smaller system terminals, light weight and low power consumption.
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  22. #112
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    "Space program breeds top forage grasses for livestock"

    http://www.ecns.cn/news/2020-09-03/d...u2686843.shtml

    China's spacecraft are best known for such things as deploying astronauts, studying Earth and transmitting signals, but some also carry out missions neither well-known nor usually attributed to space exploration. One such mission is helping to improve the quality of dairy products.

    At least five types of forage grasses have been created through space-based breeding programs to develop beneficial mutations. The results of the programs, created by Chinese researchers, have been approved by the government for use in nationwide or provincial-level planting, according to an academic workshop on space breeding for forage grass that was held in Lanzhou, Gansu province, over the weekend.

    Compared with natural or conventionally bred types of forage grasses, these space-developed versions feature higher protein content, greater annual yields, shorter growth periods and better resistance against diseases and insect pests, allowing cattle farmers to feed their cows with better fodder.

    Consequently, the quality of their dairy products will be substantially improved with production increased, experts said at the meeting, adding that hog or sheep farmers will also benefit from the use of space-bred grasses.
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  23. #113
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    "China's polar-observing satellite obtains over 2,500 images"

    http://www.xinhuanet.com/english/202..._139365362.htm

    China's first polar-observing satellite, BNU-1, has obtained 2,501 images covering the Arctic and Antarctic regions after orbiting Earth for a full year, its owner, Beijing Normal University (BNU), said on Saturday.

    At the press conference held in Beijing, the BNU released a series of remote sensing data of the North and South Poles.

    Among all the images obtained by the satellite, 850 are of the Antarctic ice sheet and 1,025 picture the Arctic regions.

    Also, a total of more than 240 high-quality remote sensing scenes, which picture the North and South Poles in partly cloudy weather with a resolution of 80 meters, were made by the satellite.

    Users have access to all the above data and images, and downloading is free (http://earth.bnu.edu.cn), the BNU said.
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  24. #114
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    "China aims to operate regular space flights by 2045, official says"

    https://www.reuters.com/article/us-c...-idUSKBN2691XL

    China aims to set up a space programme operating thousands of flights a year and carrying tens of thousands of tons of cargo and passengers by 2045, state news agency Xinhua quoted an official as saying on Friday.

    China is trying to catch up with Russia and the United States to become a major space power by 2030.

    Bao Weimin, a senior official at China Aerospace Science and Technology Corp., told a conference that the planned space flight system would be able to meet commercial demands, according to the Xinhua report.
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