Chinese Satellites, Beidou Navigation System and related technologies


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Top Scientist Reveals Further Plans for China’s Beidou Satnav System

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China’s homegrown Beidou Satellite Navigation System is set to become more integrated and intelligent, one of its key developers told Yicai.

The next step is to build a more intelligent and comprehensive national positioning, navigation, and timing system to solve “the problems in deep space, inside architecture, and under water,” Lin Baojun, chief designer of the BDS-3, said in a recent interview.

Lin, who is also vice chief director of the Innovation Academy for Microsatellites, has worked on 12 satellites from the completion of the BDS-1 system at the end of 2000 to that of the BDS-3 in July 2020, which provides high-precision positioning and navigation to users in 200 countries.

BDS is integrating new technologies including big data and artificial intelligence to build an ecosystem of emerging industries. Many navigation map suppliers in China have prioritized the BDS positioning system, and it is used over 360 billion times each day on average.

China's satellite navigation and location service industry was worth CNY501 billion (USD68.7 billion) in 2022, up 6.8 percent from the previous year, according to the White Paper on the Development of China's Satellite Navigation and Location Service Industry released earlier this year.

The core output value of the industry including chips, devices, algorithms, software, navigation data, terminal equipment, and infrastructure directly related to the research, development, and application of satnav technology rose 5 percent from a year ago to CNY152.7 billion.

A more ubiquitous, integrated, smart, and comprehensive national positioning, navigation, and timing system is scheduled to be established by 2035, according to China’s plans.

“Now BDS, like other major navigation systems, covers thousands of kilometers above the ground,” Lin said. “However, it is still very difficult to offer seamless coverage from deep space to indoor space to underground space.

“It is particularly difficult to cover the space under water since signals from satellites in space are transmitted to the ground then to terminals through microwave signals that cannot pass through water,” he said, “so other means are needed.”


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The original Belfer Center publication is quite a bit more detailed (although soaked with political garbage-water)
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Some important notes from the original article
US only has 16 ground stations, 9 are in the USA.
It does not have ANY GPS ground stations in SE Asia
One reason why China has been able to build so many ground stations is they are often bundled with infrastructure projects, especially around railways which benefit the most from GNSS data.

Almost reminds me of the "International Community" meme map where it's like 20 countries


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A quick glance shows how shitty that gpsworld piece is. The author is just a typical salary thief who keeps recycling the waste from the same dumpster known as NED.

The latest BeiDou satellites also feature two-way messaging, a feature that GPS does not have. It is mainly available in China and requires special chips that are not widely available in the consumer market.
Huawei and ZTE have been selling phones with this feature to millions of consumers.

The CNBC report noted the fear that, with its most recent enhancements, the BeiDou system could be used as a surveillance device — as the two-way messaging feature reveals a user’s locations as well as other types of data.
Additionally, with the growing number of applications for cellphones and an increase in autonomous vehicles that use the BeiDou system, more and more user data is being transmitted.
As if any non-Beidou cell phones wouldn't reveal a user's locations the moment it connects to the basestations.


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The article is way too politically loaded but it has some good content.
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The National Space-Based Positioning, Navigation and Timing Advisory Board (PNTAB) warned that “GPS’s capabilities are now substantially inferior to those of China’s BeiDou” and urged the U.S. to regain PNT leadership over the next decade.

The U.S. is currently replacing 1990s-era GPS satellites with newer GPS 3 satellites. However, GPS 3 is not a trailblazing technology. Originally intended to launch in 2014, these satellites offer only moderate improvements to GPS 2, such as an upgraded accuracy of 1 to 3 meters. This is less than what Galileo can provide.

The military’s next-generation PNT system, known as NTS-3, is still only in the R&D phase, with the first test satellite to deploy no sooner than late this year. It is unclear how long it will take before NTS-3 is fully operational.


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SpaceNews keeps getting more irrelevant as a resource. Good luck trying to find an article there about the latest Angara launch from Vostochny for example. Using the new launch pad. And the article you can find there about Vostochny when they inaugurated the Soyuz 2 launch pad mostly blabbers about corruption during construction instead of even trying to properly analyze the consequences of Russia getting its own independent GTO launch site.