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Beat GPS by more than 1000X BDS location service to mm accuracy!

Discussion in 'The Courtyard Café' started by tun_dr_m, Feb 15, 2018 at 4:49 AM.

  1. tun_dr_m

    tun_dr_m Alfrescian Old Timer

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    OK the 1st map below shows where you can get up to what accuracy level.

    FindM is a decimeter level, 跬步 in Chinese means half-step. Aka accurate to within half a foot step level. About @S$2/month. Position Reading is @1 reading per sec.
    ¥10.00
    按月购买
    月/个

    FindCM is centimeter level @S$80/month. Position Reading is @1 reading per sec.
    ¥400.00
    按月购买

    FindMM is millimeter level accuracy! @S$78/quarter. Position Reading is @1 reading per Hr. for Static application.
    ¥388.00
    按季购买

    There are many devices and many new ones appearing rapidly, including Chinese brand smart phones!

    These are the Civilian Services. We are not being told about PLA's military system capabilities yet. But you can guess 10X better. From known weapons they can track and hit ships at hypersonic speed globally (50m accuracy). supersonic 10m possible. subsonic 1m possible. walking / driving better than 1m possible. Halted 10mins get accuracy to cm/mm possible.




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    互联网精细农业
    通过物联网基础设施和合作伙伴的方案,实现数据在线的精细农业规划、实施、管理和联动。

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    共享单车
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    车辆定位
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    基于RTK定位原理,依托遍布全国的卫星定位地基增强站,融合各类定位技术,全天候互联网播发高可用厘米级差分服务。

    无人机应用
    赋能无人机的精准起降与飞行。成熟运用于无人机物流及无人机电力巡检等替代人力的无人机应用场景。

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  2. tun_dr_m

    tun_dr_m Alfrescian Old Timer

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    https://market.qxwz.com/device-market-list.html?type=4

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  3. tun_dr_m

    tun_dr_m Alfrescian Old Timer

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    http://mil.news.sina.com.cn/jssd/2018-02-14/doc-ifyrmfmc2455355.shtml

    中国用这顶级成就挑战美国 令GPS终端价格暴跌1千倍
    中国用这顶级成就挑战美国 令GPS终端价格暴跌1千倍

    0
      作者署名:牛弹琴

    [​IMG]
      2月12日,北斗三号第五、第六颗组网卫星成功发射,北斗系统家族又添新成员。

      预计2020年,中国北斗将实现35颗卫星全球组网,具备服务全球能力,成为美国GPS的有力挑战者。

      事实上,北斗最高定位精度已达毫米级,这一优势让GPS导航终端成本价从1000多美元暴跌到如今的1美元。

      鲜为人知的是,中国北斗世界领先的背后,隐藏着三个故事。

      (一)

      1991年,海湾战争,伊拉克。

      “沙漠风暴”空袭行动之前,一支名为“诺曼底”的直升机分队,利用夜幕掩护,低空飞行,悄无声息地突破防线,精准摧毁了伊军的2个早期预警雷达营,为后来的大规模轰炸创造了条件。

    [​IMG]
      (“沙漠风暴”行动中,一座被美军击中的伊军混凝土机库,顶盖被完全穿透)

      沙漠一望无际,缺少明显的地形、地貌标记,定位极其困难。美军却能在夜间纵横大漠,精准打击,靠的就是GPS。

      2万公里之遥的卫星,帮助美军打赢了一场地面战争,“沙漠风暴”被称为人类历史上“第一次星球大战”,GPS也因此一战成名。

      始于1958年的GPS,凭借着资历老、名气大以及服务范围广,成为了导航定位的代名词,垄断全球导航市场。

      《全球导航卫星系统(GNSS)市场报告》显示,2015年全球GNSS拓展市场收入接近2500亿欧元,GPS独占鳌头。

    [​IMG]
      (全球GNSS市场规模)

      然而,美国向世界开放的只是民用版GPS,精确度远低于自己独享的军用版。更重要的是,美国一手掌控GPS,可以随意关闭或人为增大民用码的误差,自己却不受任何影响。

      这绝非危言耸听。1993年7月23日,美国以获得情报为由,无端指控中国“银河号”货轮向伊朗运输制造化学武器的原料。美国直接关掉“银河号”上的GPS,导致“银河号”寸步难行,制造了震惊世界的“银河号”事件。

    [​IMG]
      “沙漠风暴”行动和“银河号”事件告诉我们,卫星导航系统是国之重器,关乎国家安全,绝不能受制于人。

      中国必须要有自己的卫星导航系统!

      (二)

      正是认识到这一点,在“银河号”事件发生的第二年,中国决定发展自己的卫星导航系统,这就是现在的北斗系统。

      历时10年,2003年,北斗系统正式开通运行,中国成为世界上第三个拥有自主卫星导航系统的国家。

    [​IMG]
      (最初的北斗系统被称为北斗一号,由3颗“静轨道”卫星组成)

      但是,因起步较晚,北斗系统尚属实验开发阶段,不仅技术参数落后于GPS,覆盖范围也仅限中国,商用价值不高。

      就在此时,正计划挑战美国的欧洲,抛出了雄心勃勃的“伽利略”计划,主动“邀请”中国加盟,共同对抗GPS。

    [​IMG]
      (伽利略卫星导航系统)

      中国也希望借此搭上快车,双方一拍即合。2004年,中欧签署协议。中国承诺投入2.3亿欧元,很快就支付了第一笔7000万欧元的款项。刚刚走上正轨的北斗系统也因此被临时搁置。

      美国大惊失色,如临大敌,甚至扬言,如果感到威胁,将击毁“伽利略”卫星。

      孰知,第二年,欧洲亲美政治人物纷纷上台,政治风向大变,迅速向美国靠拢,开始排挤中国。

      中国投入了巨额资金,却无法进入“伽利略”计划的决策机构,甚至在技术合作上也遭到百般阻挠。

      除了得了一个参与者的“好名声”,中国一无所获,只能黯然退出。

      这个教训告诉我们,卫星导航系统是国之重器,关乎国家利益,绝不能假手于人。

      中国的卫星导航系统,必须独立自主!

      (三)

      被逼无奈,中国决定“单干”。

      沉寂数年的北斗系统重新激活——

      2007年4月,首颗MEO卫星成功发射。

      2009年4月,首颗GEO卫星成功发射。

      2010年1月,第2颗GEO卫星成功发射。

      2017年11月5日,第24、25颗卫星成功发射。

      2018年1月12日,第26、27颗卫星成功发射。

      预计2020年,北斗将实现全球组网,具备服务全球能力。

    [​IMG]
      (北斗系统演进)

      事实上,北斗在技术上已经超越“伽利略”,媲美GPS。但要知道,中国起步晚,技术力量薄弱,研发一套全新的卫星导航系统谈何容易。

      短短20年,北斗系统能够披荆斩棘、后来居上,得益于中国科技实力的整体提升,更离不开千千万万科技工作者的不懈努力。

      北斗三号工程第三次全球组网卫星发射之际,正值春节前夕。

      当全国人民踏上回家团圆的归途,数百名科技人员却坚守在西昌,执行发射任务。

      他们是北斗系统的幕后英雄!

      全球领先的精准位置服务公司——千寻位置发起了“为中国北斗打call,千寻送英雄回家”的活动。

      活动期间,千寻官方微信将向网友征集对“中国北斗”的新年寄语,并以留言网友的名义,为北斗工程师购买回家机票。

      网友充满“正能量”的留言,还将被制作成标贴,装饰机舱,营造出温馨的氛围。

    [​IMG]
      想了解完整活动视频,请点击文末阅读原文,关注“千寻时空”公众号点赞北斗栏目。

      千寻位置发起这项活动,并非心血来潮,而是初心所致。

      这要从千寻与北斗的关系说起。

      一、千寻位置依托北斗

      千寻位置成立于2015年8月,由中国兵器工业集团和阿里巴巴集团共同发起成立。

      千寻位置基于北斗卫星系统(兼容GPS、GLONASS、Galileo)基础定位数据,利用遍及全国的超过2000个地基增强站及自主研发的定位算法,通过互联网技术进行大数据运算,为遍布全国的用户提供精准定位及延展服务。

      千寻位置是北斗系统价值的重要组成部分,更是依托于国之重器的国民“黑科技”。

      二、千寻位置助力北斗

      受卫星轨道误差、卫星钟差误差等因素影响,传统卫星导航系统难以消除误差,这需要在地面建立地基增强站,以定位算法获得定位数据差分信息,再进行大范围播发,帮助终端实现高精准定位。

      千寻位置便肩负着北斗地基增强系统建设的使命。千寻位置已在全国建立了超过2000个地基增强站,通过自主研发的定位算法和互联网技术大数据运算,为遍布全国的用户提供精准定位及延展服务。

      北斗与千寻位置,共同组成了“天上数颗北斗星、地上一张地基网”,实现了高精准厘米级定位,构建了“弯道超车”的核心竞争力。

      千寻位置也因此成长为全球领先的精准位置服务公司,提供高达动态厘米级和静态毫米级的定位能力和高精度应用解决方案,是IoT时代重要的基础设施之一。

    [​IMG]
      2018年,千寻位置将在中国大陆全境实现实时厘米级服务覆盖。届时,北斗高精度定位服务将成为全社会共享的一项公共服务,为智慧城市、自动驾驶、智慧物流赋能,为人们的生活带来便利。

      “司南之杓,投之于地,其柢指南。”

      从无到有,从弱到强,中国北斗取得的成就,让世界惊叹。北斗与千寻,共同组成的天地一张网,不仅守护着国家,更造福了社会。

      我们祝福北斗越来越好,也希望有越来越多像千寻位置这样的公司,将国之重器转化为国民科技,助力国家经济,惠及全国人民。
     
  4. pap_doggy

    pap_doggy Alfrescian Old Timer

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    https://www.popsci.com/china-beidou-3-satellite-navigation-system



    China's future satellite navigation will be millimeter-accurate
    The Beidou 3 will guide military munitions and drones.
    By Jeffrey Lin November 7, 2017

    [​IMG]


    Beidou Launch

    The Beidou satellite is usually launched by LM-3 space launch vehicles.

    by78

    China's military is updating its satellite navigation system, launching tech that'll offer super accurate guidance for munitions and drones.

    On Sept. 29, China launched two Beidou 3 satellites from a Long March 3C rocket from the Xichang Satellite Launch Center in Sichuan province. Another two Beidou 3 satellites will launch before the end of 2017, part of a network of 20 Beidou 3 and 10 older Beidou 2 satellites set to go up by 2020.

    Civilian GPS receivers generally achieve higher accuracy by combining signals of several satellites, and indeed the completed Beidou Navigation Satellite System is expected to provide global coverage, with millimeter-level accuracy.

    [​IMG]
    Beidou 3

    Beidou 3 satellites will offer superior accuracy compared to current Chinese navigation satellites.

    China Academy of Sciences

    Plus, thanks to a new, more accurate atomic clock, the Beidou 3 satellites will also be able to send more precisely timed radio pulses. Atomic clocks, which are set to the oscillations of atoms from stable isotopes, are highly accurate. The American NIST-F2 atomic clock, for example, is designed to lose only a second every 300 million years.

    [​IMG]
    Beidou 2/Compass

    The Beidou 2/Compass navigation satellites will have 35 satellites once completed, with 5 in geosynchronous orbit, and 30 in middle earth orbit.

    China Academy of Space Technology, via Escobar on Sinodefence Forum

    The system will also likely have new, jam-proof chips. Allystar Technology has unveiled a computer chip for use in Beidou receivers, providing instant accuracy without the aid of augmentation by ground control stations. This computer chip's ability to enhance satellite navigation signals could enable military Beidou users to withstand enemy attempts to jam satellite navigation.

    The Beidou 3 satellite navigation service is expected to be available only to Chinese military and national security users for the foreseeable future. The updates could be particularly useful for Chinese unmanned systems (like small quadcopter drones) as well as long-range cruise missiles.

    Peter Warren Singer is a strategist and senior fellow at the New America Foundation. He has been named by Defense News as one of the 100 most influential people in defense issues. He was also dubbed an official "Mad Scientist" for the U.S. Army's Training and Doctrine Command. Jeffrey is a national security professional in the greater D.C. area.



    http://news.dwnews.com/china/news/2017-12-29/60032697.html

    中国北斗导航定位精度可达毫米级
    [​IMG]
    微信
    +
    A

    -
    2017-12-29 13:53:01
    中国北斗卫星导航系统发言人冉承其在12月27日的国新办新闻发布会上透露,2020年中国卫星导航产业产值有望达到4,000亿元人民币。

    据新加坡《联合早报》网站12月28日报道,中国自主研制的北斗卫星导航系统于2012年正式开通,时过五年,目前已覆盖200多个国家和地区,最近又与美国全球定位系统(GPS)实现全面信号兼容。

    冉承其说,与全球其他三大卫星导航系统相比,北斗除了具备三大系统的技术机制之外,还保留北斗一号(第一代北斗系统,也称北斗卫星导航实验系统)独具的短报文和位置报告服务能力。

    [​IMG]中国北斗系统成就令世界震惊
    与GPS芯片价格相比,北斗芯片单价曾一直是制约北斗导航民用的最大瓶颈。冉承其12月27日表示,由于建立了完整的产业链和技术,加上工艺产能的提升,国产北斗芯片从五年的空白到目前单价已降至6元(1元人民币约合0.153美元),在总体性能上也达到甚至优于国际同类产品。

    冉承其也称,北斗二号的定位精度已由2012年的10米提升至6米,在中国境内能够提供实时米级、分米级、厘米级和后处理毫米级高精度服务。北斗三号将在定位精度上达到2.5米至5米。

    他还说,北斗+的应用模式在中国境内“正在成为一种像水、电、互联网一样的公共服务”,已在公安、交通、渔业、减灾等行业得到广泛应用。

    交通运输部综合规划司负责人彭思义说,中国所有交通运输公务船都加装了北斗终端,所有沿海地区也都建设部署了北斗差分增强站点。此外,全国约有480万辆危险品车、大客车、班线客车以及四万多艘渔船安装了北斗终端,共享脚踏车采用的也是北斗卫星定位信息。

    在国际化方面,彭思义说,北斗系统已得到国际海事组织、国际搜救卫星组织的认可,下一步将准备进入国际民航组织等国际组织,以及相关的国际标准体系。

    报道称,中国也正通过密集发射卫星,加速迈进全球组网时代。今年11月,中国以一箭双星的方式成功发射第24、25颗北斗导航卫星。

    面向未来,冉承其12月27日透露,2018年底,中国要发射18颗左右北斗三号组网卫星,为“一带一路”倡议的国家和地区优先提供服务;2020年底,将建成30颗卫星的完整系统,为全球用户提供定位、导航等服务。
     
  5. SeeFartLoong

    SeeFartLoong Alfrescian Old Timer

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    http://www.scmp.com/news/china/soci...-rival-satellites-accurate-within-millimetres

    China to launch new GPS rival satellites ‘accurate to within millimetres’, website says
    Beidou-3 craft may be put in orbit later this month, according to aerospace website, with operators confirming launch coming ‘soon’

    PUBLISHED : Wednesday, 13 September, 2017, 9:00pm
    UPDATED : Wednesday, 13 September, 2017, 10:23pm
    Comments: 30

    [​IMG]
    [​IMG]
    Stephen Chen
    10 Feb 2018
    China plans to launch its most powerful positioning and navigational satellites later this month, according to an aerospace website, with their makers claiming the technology is accurate to within millimetres.

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    Two Beidou-3 satellites are expected to be launched on September 29, the website 91fly.cn reported, with developers saying the system was 10 times more precise than GPS.

    Evidence that the launch may be imminent was also suggested by the official military newspaper PLA Daily on Monday.

    A Yuanwang-class surveillance vessel left a military harbour in eastern China’s Jiangsu province on Sunday for the Pacific Ocean for a satellite tracking mission, the newspaper said, without providing any more details.

    China to massively increase accuracy of its GPS rival, with benefits for smartphone users ... and the military

    An official at Beidou’s operator, the China National Administration of Global Navigation Satellite Systems and Applications, told the South China Morning Post the launch would be “soon”, but did not elaborate.

    [​IMG]

    Beidou-3 is a new generation satellite developed by China to provide positioning and navigation services around the globe. China initiated the Beidou programme, also known as Compass, in the 1990s to compete with GPS, which was developed in the United States.

    The 91fly.cn website, run by Chinese aerospace enthusiasts, has previously accurately predicted launch dates. It said the two Beidou-3 satellites would be blasted into orbit on a CZ-3B Long March from a launch centre in Sichuan province.

    Surprise, relief as China’s key satellite makes it to orbit despite rocket launch failure

    The two craft were originally scheduled for launch in July, but the mission was postponed after two consecutive failures of Long March rockets on other satellite missions.

    The second failure of a heavy-lifting CZ-5 rocket in early July led to the loss of the largest satellite China had ever built and prompted space authorities to put back further launches.

    Li Min, a researcher at the National Engineering Centre for Satellite Positioning Systems at Wuhan University, said Beidou-3 would be the most advanced positioning and navigational satellite on the planet.

    “It is the new boy in town ... with some of the latest technology,” said Li, who was involved in China’s military positioning satellite research programmes. He declined to give details of the military applications for the technology.

    China is offering over a million dollars for a foreigner to run the world’s largest telescope, so why is nobody applying?

    Yang Yuanxi, deputy chief designer of the Beidou system, told state media earlier this year that the latest satellites would be at least 10 times more precise than existing models.

    These were accurate to centimetres, similar to the US-developed GPS, he said.

    The satellite navigation system calculates a user’s location by measuring tiny differences in the arrival time of electromagnetic pulses from several positioning probes in the sky, but a new atomic clock on Beidou-3 could reduce the margin of error to a few millimetres.

    Li, however, was more cautious, adding that the performance of Beidou-3 would need to be evaluated after use.

    “In real life, accuracy is not only affected by atomic clocks, but also how well these satellites work together in a large, sophisticated array,” he said.

    The improved accuracy of Beidou-3 would hardly be noticeable to most civilian users, he said. Only the military or organisations authorised by the government, however, would be able to get access to the ultra-high accuracy service for special tasks, he said.

    Chinese satellite makes breakthrough in quantum communication

    The Beidou programme will need more than 30 of the new satellites to cover every corner of the globe. Over a dozen satellites are still waiting for launch, with the initiation of the global service scheduled before 2020.

    The launch of Beidou-3 comes at a politically sensitive time in China, with the five-yearly party congress set to open in Beijing next month. There is likely to be a major reshuffle of the country’s top leadership at the event as President Xi Jinping begins his second term in office.
     
  6. SeeFartLoong

    SeeFartLoong Alfrescian Old Timer

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    https://gizmodo.com/5871351/china-military-now-has-its-own-gps

    China Has Its Own GPS Now—And It's Better Than Yours
    [​IMG]
    Jesus Diaz

    12/27/11 1:35pm
    Filed to: China
    2171
    [​IMG]
    China is now one step closer to become the top economic and military superpower in the world: their Beidou geo-positioning system is now fully armed and operational.

    Why is this important?
    Accurately knowing where you are on planet Earth is one of the most powerful technologies any country can have.

    Beidou cuts China's dependency of the American GPS system completely. It means that they would be able to launch any attack and move their forces around the world without any US interference. Right now, the United States can deactivate their Global Positioning System so nobody can use it in certain areas. That includes enemy armies. After Beidou, however, this will be impossible.

    How accurate is Beidou?
    Civilian transports would be able to know where they are within a range of 10 meters. They would also be able to record speed with a 0.2 metres-per-second error margin and synchronize their clocks with an accuracy of 0.02 millionths of a second. This is way better than the United States' GPS system, which has an accuracy of 20 meters (66 ft). Garmin claims that their receivers are accurate to within 15 meters on average, which is worse than the accuracy claimed by the Chinese.

    Like GPS, however, Beidou has two modes: civilian and military. The Chinese military will have even more accuracy. They haven't disclosed by how much.

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    The US military and other agencies use augmentation systems that provide higher accuracy. GPS.gov claims that "these enable real-time positioning to within a few centimeters, and post-mission measurements at the millimeter level." Right now, the Air Force and Lockheed Martin are working on GPS III. It will greatly increase accuracy while giving a stronger signal, harder to jam and capable of penetrating areas in which the current GPS doesn't work.

    What does it cover?
    Right now they have ten geo-positioning satellites in orbit covering China. By 2012 they will have 16 to cover most of Asia and, by 2020, they will cover the entire world with 35 satellites. That means that their navy, airplanes and land troops would know where they are in any part of the world without depending on the American GPS.

    How can they use Beidou?
    China will be able to move their civilian transport ships and airplanes all over the world without being dependent on any other country. Their military would also use this system to direct their ships, combat airplanes, drones and land forces in battle.

    They would also be able to use Beidou to target any kind of weapons with great accuracy, including cruise missiles.

    Who benefits from this?
    Apart from the Chinese military, their economic system will have a big boost thanks to Beidou. According to the head of the project talking to China Daily, it "will create a market as big as 400 billion yuan ($61.54 billion) by the end of 2020." The Chinese government is investing $25 billion on it.

    Is it compatible with GPS?
    According to Beidou, their system will be compatible with the American GPS, the Russian Glonass—which is also fully operative—and the European Galileo. [Beidou and China Daily via BBC, GPS.gov, Lockheed Martin]
     
  7. SeeFartLoong

    SeeFartLoong Alfrescian Old Timer

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    http://www.atimes.com/article/chinas-precision-navigation-system-use-30-satellites/


    [​IMG]
    Liu Fang (left) and Wang Feixue. Photo: cpc.people.com.cn
    19th Party CongressChina
    China’s precision navigation system to use 30 satellites
    BeiDou-3 will be able to achieve accuracy 'within millimeters', 10 times as precise as GPS, according to previous media reports
    By Jeff Pao October 23, 2017 3:59 PM (UTC+8)
    China is building a military-grade navigation system called BeiDou-3 that will have global coverage through more than 30 satellites, according to an academic speaking on the sidelines of the 19th National Congress of the Communist Party of China.

    In 1995, China started to develop its first BeiDou Navigation Satellite System as an alternative to the Global Positioning System in use by the United States, Dr Wang Feixue, a professor at the College of Electronic Science and Engineering, National University of Defense Technology, said at a media briefing on Sunday evening.

    “Our satellite program kicked off 20 years later than foreign countries’. We have not yet achieved full global coverage at the moment,” Wang said. “There is still a long way for us to go.”

    As China only had the resources to launch six satellites two decades ago, its scientists could only use two satellites to track an object, he said. However, they faced a problem with “fast capture”, a key technology for navigation, he said.

    “At that time, my team and I were interested in taking the challenge, and finally tackled the problem by using some new technologies,” he said. Based on their achievements, China now has BeiDou-2, which can connect to more than 10 satellites, and is developing BeiDou-3, he said.

    “Even if our satellite system can achieve full global coverage by 2020, we should not slow down, as technology is improving every day,” he said. His team will continue to help equip the People’s Liberation Army with new technologies.

    Born in 1971, Wang was granted admission to the National University of Defense Technology in 1988 and gained a PhD in 1998. He is the leader of the research team that developed China’s second-generation satellite system, BeiDou-2.

    BeiDou, which literally means “Northern Dipper”, the Chinese name for the constellation known in the West as the Big Dipper or the Plow, is a huge engineering project jointly established by hundreds of government departments, and it has already been applied for civilian uses, Wang said.

    Previous media reports said BeiDou-3 would be able to achieve an accuracy “within millimeters”, 10 times as precise as GPS.

    China will continue to increase the quality and efficiency of its army in order to achieve basic automation by 2020, President Xi Jinping said in his opening speech at the 19th Party Congress last Wednesday. It will upgrade its army and weapons to achieve basic modernization of its national defense by 2035, he said.

    By the middle of this century, the People’s Liberation Army (PLA) will become a leading army in the world, he said.

    At the same media briefing where Wang spoke, Liu Fang, a staff officer of the Office for International Military Cooperation of the Central Military Commission, said that over the past five years during Xi’s first term in office, the PLA’s “circle of friends” had been growing.

    “We have established military relations with many foreign powers and also developed different kinds of military cooperation with our neighboring countries,” she said.

    The PLA has been proactively contributing to the United Nations’ peacekeeping actions and setting up information-exchange channels with other countries, Liu said.

    The dailyReport
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  8. Ang4MohTrump

    Ang4MohTrump Alfrescian Old Timer

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    Dotard lost the space race. Period.
     

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