Quickie
Colonel
There are still more Beidou satellites to be launched in 2019 and 2020 that will help to double the present accuracy of the Beidou.
News on China's scientific and technological development.
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There are still more Beidou satellites to be launched in 2019 and 2020 that will help to double the present accuracy of the Beidou.
antiterror13
Brigadier
Exactly ... basically to replace existing 2nd generation Beidou ... so by 2020, I believe all satellites in the sky would be 3rd gen Beidou
The leaders in Russia, China and EU saw that relying solely on US GPS was not a good idea in early 2000s or late 90s and decided to develop their own ... also for military service, not good to rely on the USA
Imagine if there were only one system (GPS) now ... hahhaha Mr Trump would have made numerous threat to cut the service and all would have to pay to use the service ... I have no doubt about that
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That is a right guess. Beidou 3 uses hydrogen and rubidium atomic clock which is 10 times more accurate and stable than Beidou 2 series, so the 5m vs. 10m improvement.you beat me@Jura
because some satellites still 2nd generation Beidou (15) and already 18 3rd generation. The offer (free) is 10m accuracy ... but in Asia Pacific, the accuracy is 5m. My guess is that the majority of 3rd generation Beidou are above Asia Pacific
Wiki has been updated ... very quick (not by me obviously)
In the livemint article,
The coming two years put 2020 as the milestone which is according to the original plan. I think when China said "2020" it meant the system's global universal accuracy at 5m and equal coverage. Today, the coverage is better in Asia-Pacific.
See the coverage map from Beidou official site. Two clusters in Asia-Pacific and one cluster in north east Africa have the highest number of visible sattelites.
antiterror13
Brigadier
@taxiya
10cm accuracy for paid service, including military ... also it says that "It was claimed in 2016 that BeiDou-3 will reach millimeter-level accuracy (with post-processing), which is ten times more accurate than the finest level of GPS"
What do you think of that? and what is the impact to the Chinese weapon systems (i.e ICBM, CM, etc) ?
10cm accuracy for paid service, including military ... also it says that "It was claimed in 2016 that BeiDou-3 will reach millimeter-level accuracy (with post-processing), which is ten times more accurate than the finest level of GPS"
What do you think of that? and what is the impact to the Chinese weapon systems (i.e ICBM, CM, etc) ?
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Jura The idiot
General
now noticed the tweet
Chengdu in SW China’s Sichuan province is planning to erect China’s first unmanned smart railway port that will be able to handle 1.5 million TEU annually once completed, China News Service reported Wednesday
Chengdu in SW China’s Sichuan province is planning to erect China’s first unmanned smart railway port that will be able to handle 1.5 million TEU annually once completed, China News Service reported Wednesday
I don't know the tech details, but using references, 10cm was a design goal of Galileo, also the latest GPS (???). Since the most important factor is the clock, and BeiDou-3's clock is one of the best (if not the best), it is safe to say Beidou-3 is better than GPS or Galileo, at least no worse, I say no worse is only to cover my ass not really I believe so.
I can't comment on Millimeter level because I know nothing about the possible post-processing scheme. Brutally increase the clock is probably not working in today's tech level. Will be interested in reading about the post-processing.
Impact is straight forward as GPS to US. One thing I want to emphasize is the significance of Beidou to China's global ally building. one reason of China's weapon export being small and low tech is because most high-end weapons need GPS guidance, this effectively making Chinese weapon's useless. Now with Beidou, customers are given another choice, pretty much like Chinese investment in Africa gives African's another choice over western countries.
Jura The idiot
General
Do the satellites switch off over North America, or is that just how they decided to orbit the satellites?
Jura The idiot
General
now noticed the tweet
Le compteur du nombre de lancements orbitaux chinois s'arrête finalement sur le chiffre de 39 cette année, avec, si le compte est bon, 106 engins mis en orbite dans 3 centres spatiaux et 10 modèles différents de fusée utilisés.
Translated from French by
The counter of the number of Chinese orbital launches finally stops on the figure of 39 this year, with, if the account is good, 106 gears put into orbit in 3 space centers and 10 different rocket models used.
Le compteur du nombre de lancements orbitaux chinois s'arrête finalement sur le chiffre de 39 cette année, avec, si le compte est bon, 106 engins mis en orbite dans 3 centres spatiaux et 10 modèles différents de fusée utilisés.
Translated from French by
The counter of the number of Chinese orbital launches finally stops on the figure of 39 this year, with, if the account is good, 106 gears put into orbit in 3 space centers and 10 different rocket models used.