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The end of stealth? New Chinese radar capable of detecting ‘invisible’ targets 100km away

Discussion in 'China & Asia Pacific' started by RMFAN, Sep 29, 2017.

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  1. RMFAN

    RMFAN BANNED BANNED

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    http://www.scmp.com/news/china/arti...dar-capable-detecting-invisible-targets-100km


    Breakthrough relies on ‘spooky’ phenomenon of quantum entanglement


    PUBLISHED : Wednesday, 21 September, 2016, 12:43pm
    UPDATED : Monday, 12 June, 2017, 12:53pm


    A top Chinese military technology company shocked physicists around the world this week when it announced it had developed a new form of radar able to detect stealth planes 100km away.

    The breakthrough relies on a ghostly phenomenon known as quantum entanglement, which Albert Einstein dubbed “spooky action at a distance”.

    China Electronics Technology Group Corporation (CETC), one of the “Top 10” military industry groups controlled directly by the central government, said on Sunday that the new radar system’s entangled photons had detected targets 100km away in a recent field test.

    That’s five times the “potential range” of a laboratory prototype jointly developed by researchers from Canada, Germany, Britain and the United States last year.

    America’s Defence Advanced Research Projects Agency has reportedly funded similar research and military suppliers such as Lockheed Martin are also developing quantum radar systems for combat purposes, according to media reports, but the progress of those military projects remains unknown.

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    In a statement posted on its website on Sunday, CETC said China’s first “single-photon quantum radar system” had “important military application values” because it used entangled photons to identify objects “invisible” to conventional radar systems.

    Nanjing University physicist Professor Ma Xiaosong, who has studied quantum radar, said he had “not seen anything like this in an open report”.


    “The effective range reported by the international research community falls far below 100km,” he said.

    A military radar researcher at a university in northwestern China said the actual range of the new radar could be even greater than that announced by CETC.

    “The figure in declassified documents is usually a tuned-down version of the real [performance],” he said. “The announcement has gone viral [in the radar research community].”

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    The scientists said they were shocked because, until recently, the idea of quantum radar had remained largely confined to science fiction.

    Quantum physics says that if you create a pair of entangled photons by splitting the original photon with a crystal, a change to one entangled photon will immediately affect its twin, regardless of the distance between them.

    A quantum radar, generating a large number of entangled photon pairs and shooting one twin into the air, would be capable of receiving critical information about a target, including its shape, location, speed, temperature and even the chemical composition of its paint, from returning photons.

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    That sounds similar to a normal radar, which uses radio waves, but quantum radar would be much better at detecting stealth planes, which use special coating materials and body designs to reduce the radio waves they deflect, making them indistinguishable from the background environment.

    In theory, a quantum radar could detect a target’s composition, heading and speed even if managed to retrieve just one returning photon. It would be able to fish out the returning photon from the background noise because the link the photon shared with its twin would facilitate identification.

    [​IMG]





    However, Ma, who was not involved with the CETC project, said serious technical challenges had long confined quantum radar technology to the laboratory.

    The photons had to maintain certain conditions – known as quantum states – such as upward or downward spin to remain entangled. But Ma said the quantum states could be lost due to disturbances in the environment, a phenomenon known as “decoherence”, which increased the risk of entanglement loss as the photons travelled through the air, thus limiting the effective range of quantum radar.

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    The CETC breakthrough benefited largely from the recent rapid development of single-photon detectors, which allowed researchers to capture returning photons with a high degree of efficiency.

    CETC said the quantum radar’s advantage was not limited to the detection of stealth planes.

    The field test had opened a “completely new area of research”, it said, with potential for the development of highly mobile and sensitive radar systems able to survive the most challenging combat engagements.

    Quantum radar systems could be small and would be able to evade enemy countermeasures such anti-radar missiles because the ghostly quantum entanglement could not be traced, it said.

    The company said it had worked with quantum scientists at the University of Science and Technology of China in Hefei, Anhui province, where many quantum technology breakthroughs have been achieved, including the world’s longest quantum key distribution network for secured communication and the development of the world’s first quantum satellite.
     
  2. RMFAN

    RMFAN BANNED BANNED

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    Chinese Quantum radar breakthrough means China will lead the world in this area. In near future, all the American F-22,F-35 will be no more stealthy within the range of the Chinese Quantum radar and will be hunt down easily.
     
  3. InfoWarrior

    InfoWarrior BANNED BANNED

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    Last edited: Sep 29, 2017
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  4. RMFAN

    RMFAN BANNED BANNED

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  5. surya kiran

    surya kiran 2nd Lieutant FULL MEMBER

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    It detects invisible targets. Jo nahin hai, woh bhi diktha hai.
     
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  6. InfoWarrior

    InfoWarrior BANNED BANNED

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    Lol We know difference between Chinese claim and reality. Why Chinese are so desperate to get our attention ?
     
  7. RMFAN

    RMFAN BANNED BANNED

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    In fact, the Chinese like to show off any technological breakthrough and achievement to the Indians, make you know how failure your country is.
     
  8. InfoWarrior

    InfoWarrior BANNED BANNED

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    You like to show off because you are starting to realize that in actuality you have not achieved much. It is you who do not realize difference between your CCP propaganda and reality. We understand your frustration, it is you who should introspect.






    To calm your ant tribe frustration you like to show off things (which in actuality are of no real consequence), you are afraid to realize that your country has and will never achieve as much as you think. There is only so much that you and your country can achieve, the day you understand this you realize why we are so confident. :azn:

    Do you know that India has more arable Land than China ?:angry:
     
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  9. OverLoad

    OverLoad BANNED BANNED

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    Still Chinese can't detect Tejas reason why not?
    Because Tejas still rides on trucks :agree:
     
  10. nair

    nair Die hard Romeo Staff Member ADMINISTRATOR

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    Mate Stop trolling....
     
  11. nair

    nair Die hard Romeo Staff Member ADMINISTRATOR

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    Edit: Didn't realise that that thread is closed
     
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