China's Deep Space Network

Discussion in 'China' started by Martian, Jul 23, 2016.

  1. Martian

    Martian Respected Member Senior Member

    Joined:
    Sep 25, 2009
    Messages:
    1,349
    Likes Received:
    266
    Location:
    Boston
    The Chinese VLBI (ie. Very Long Baseline Interferometry) Network consists of four massive radio telescopes, local atomic clocks, and computer processing of the radio interferometric signals.

    The Chinese VLBI Network (CVN) spans the entire continental landmass of China. At the northeastern corner, there is a radio telescope in Beijing. On the eastern seaboard, there is another radio telescope located at Shanghai. In the south, there is a radio telescope in Kunming. To the northwest, the last radio telescope is in Urumqi (Xinjiang). Together, China has a "virtual"/interferometric telescope that is the size of continental China.

    The good news is that if China decides to build a massive radio telescope on one of the South China Sea islands, it can create an interferometric telescope that is the size of East Asia.

    As shown in the first citation below, China used its CVN to communicate and send commands to the Change'e I and II satellites in 2007 and 2010 respectively.

    Also, Shanghai has upgraded its radio telescope and built a truly massive 65m (or 200 feet) steerable radio telescope. It is one of the largest steerable radio telescopes in the world. The Chinese VLBI Network is undergoing an upgrade as China pushes further into deep space.

    EAVN/APT | About CVN

    [​IMG]
    ----------

    Very Long Baseline Interferometry (VLBI)

    [​IMG]
    ----------

    Tianma Telescope (Shanghai 65m Radio Telescope) | Shanghai Astronomical Observatory

    [​IMG]
     
    Neo and Dark Sorrow like this.
  2.  
  3. Martian

    Martian Respected Member Senior Member

    Joined:
    Sep 25, 2009
    Messages:
    1,349
    Likes Received:
    266
    Location:
    Boston
    2016 China Beijing Radio Telescope Perfect

    The video gets stuck at 1:22. Jump forward to 1:44 to resume watching the video. The ground-level comparison of the new giant Beijing Radio Telescope with the antiquated small array is breathtaking.

     
    Neo and Dark Sorrow like this.
  4. Indx TechStyle

    Indx TechStyle Perfaarmance Naarmal Senior Member

    Joined:
    Apr 29, 2015
    Messages:
    7,187
    Likes Received:
    7,758
    Location:
    21°N 78°E / 21°N 78°E
  5. airtel

    airtel Senior Member Senior Member

    Joined:
    Dec 25, 2015
    Messages:
    1,157
    Likes Received:
    1,662
    adrenalin likes this.
  6. Martian

    Martian Respected Member Senior Member

    Joined:
    Sep 25, 2009
    Messages:
    1,349
    Likes Received:
    266
    Location:
    Boston
    Indians make all sort of ridiculous claims. The world just ignores you.

    Without a picture and a reputable citation, it's Indian hot air.

    By the way, if you want to discuss India, there's a forum for that. It's called the Indian forums.

    Hmmm...I wonder why they call this the Chinese sub-forum? Perhaps, it's for Chinese military, technological, economic, and political developments?

    It's not CNSA. It's NAO. Two different organizations.

    It's like trying to mix NASA and NRO. Two completely different missions.
     
    Last edited: Jul 23, 2016
    Neo likes this.
  7. Indx TechStyle

    Indx TechStyle Perfaarmance Naarmal Senior Member

    Joined:
    Apr 29, 2015
    Messages:
    7,187
    Likes Received:
    7,758
    Location:
    21°N 78°E / 21°N 78°E
    Thanks, please ignore us slightly more.
    I would be more happy if India is completely ignored for nuclear non proliferation and tests. It's getting too much attention.
    No, it isn't.
    At the time it was built, it was world's largest interferometric array.
    http://repository.ias.ac.in/605/1/347.pdf
    Then, we lagged.
    We had plans to build neutrino detectors way earlier too but were put on hold because of other priorities.

    Well, India has again started focussing on such research projects.
    INO is just start.:)
    Agreed 100%.:p
    Thanks, didn't know before.
    What's full form of NAO?
     
  8. airtel

    airtel Senior Member Senior Member

    Joined:
    Dec 25, 2015
    Messages:
    1,157
    Likes Received:
    1,662
    ha ha ha Typical Uneducated CHINI , the source provided is related to National Center for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India.
    NCRA is more reputable than your fake chini CCP , more links >> http://timesofindia.indiatimes.com/...metre-Array/articleshow/49236470.cms?from=mdr

    soon world's largest telescope will be build in ladakh >> http://timesofindia.indiatimes.com/...t-telescope/articleshow/51556329.cms?from=mdr

    and this is video of " Giant Metrewave Radio Telescope " which was built in 1995 .

     
    Last edited: Jul 23, 2016
    pent and adrenalin like this.
  9. Martian

    Martian Respected Member Senior Member

    Joined:
    Sep 25, 2009
    Messages:
    1,349
    Likes Received:
    266
    Location:
    Boston
    China's National Astronomical Observatories (NAO) falls under the purview of the Chinese Academy of Sciences, which is a civilian organization.

    China's space program is controlled by the military.
    ----------

    National Astronomical Observatories, Chinese Academy of Sciences

    [​IMG]

    What did India do with its radio telescope? Nothing.

    China built its giant radio telescopes to create a VLBI deep space network to control the Chang'e missions to the Moon and for future missions to Mars and beyond.
     
    Dark Sorrow and Indx TechStyle like this.
  10. AnantS

    AnantS Senior Member Senior Member

    Joined:
    Jan 10, 2013
    Messages:
    1,229
    Likes Received:
    1,425
    Location:
    Yatra Tatra
    Why does China need a DSN to connect with probe which is lying in pacific?
     
  11. Martian

    Martian Respected Member Senior Member

    Joined:
    Sep 25, 2009
    Messages:
    1,349
    Likes Received:
    266
    Location:
    Boston
    China's Deep Space Network was used to control the Chang'e-3 Moon Lander and Yutu Rover.

    2013: China's Yutu rover separates from Chang'e-3 Moon Lander on December 14th

    Six wheels on soil for Yutu! | The Planetary Society

    [​IMG]
     
    Last edited: Jul 24, 2016
    Neo and Dark Sorrow like this.
  12. Indx TechStyle

    Indx TechStyle Perfaarmance Naarmal Senior Member

    Joined:
    Apr 29, 2015
    Messages:
    7,187
    Likes Received:
    7,758
    Location:
    21°N 78°E / 21°N 78°E
    No GMRT was used to study galaxies, planets and stars(which India's Astrosat is doing better today).

    But India never used it for communication. Instead we used IDSN(similar to European ESTRACK) for communicating with spacecraft.
     
  13. Dark Sorrow

    Dark Sorrow Respected Member Senior Member

    Joined:
    Mar 24, 2009
    Messages:
    1,630
    Likes Received:
    421
    Location:
    Mumbai
    Nice work Sir. extremely informative post. Kindly continue the good work.
     
    Martian likes this.
  14. angeldude13

    angeldude13 Lestat De Lioncourt Senior Member

    Joined:
    Dec 18, 2010
    Messages:
    1,754
    Likes Received:
    1,303
    Why the hell you people are derailing such a beautiful and informative thread.
    @pmaitra sir please remove the off topic posts.
     
  15. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,663
    Likes Received:
    17,163
    Location:
    EST, USA
    Just logged in to post a couple of posts. I will look into this thread after a couple of hours.

    I request everyone to keep this thread informative and to the point.
     
  16. Indx TechStyle

    Indx TechStyle Perfaarmance Naarmal Senior Member

    Joined:
    Apr 29, 2015
    Messages:
    7,187
    Likes Received:
    7,758
    Location:
    21°N 78°E / 21°N 78°E
    If talking of me, I just asked few questions from him. That even related to Chinese Space Program.
    BTW, somebody delete my Post no. 3 on thread (DFI post no. 1188742), as it's unrelated.
     
  17. pmaitra

    pmaitra Moderator Moderator

    Joined:
    Mar 10, 2009
    Messages:
    31,663
    Likes Received:
    17,163
    Location:
    EST, USA
    Is it? You other thread was about the Chinese Space Programme, and this one is about the Chinese Deep Space Network. These are not entirely unrelated.
     
    Indx TechStyle likes this.

Share This Page