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People are complaining about a clickbaity title but it's a fascinating article I am not sure most would read otherwise What's interesting to me is how out of d
by ck2 4mo ago
People are complaining about a clickbaity title but it's a fascinating article I am not sure most would read otherwise
What's interesting to me is how out of date US GPS system is compared to China's BeiDou
and while most US GPS receivers will use Russia's GLONOSS, China's BeiDou is blocked
https://news.ycombinator.com/item?id=47849174 https://news.ycombinator.com/item?id=47849174
- anigbrowl 4mo agoIndeed. i have some GPS receiver modules and had wondered about this data, I had assumed it was imprecision in my device or something to do with a satellite moving around. I'll have to plug it in and go back for another look.
- applicative 4mo agoThe going wisdom seems to be that the EU's Galileo is the most accurate system for civilian use. GPS has undergone frequent systematic update for almost a half century.
- dang 4mo ago(This comment was originally posted to https://news.ycombinator.com/item?id=48414479 https://news.ycombinator.com/item?id=48414479 - we've since merged the threads)
- kortilla 4mo ago> What's interesting to me is how out of date US GPS system is compared to China's BeiDou It’s significantly older though. What would you expect?
- entrope 4mo agoTwo things amaze me about GPS. First, that there are still four Block IIR and seven Block IIR-M satellites operational; these had 7.5 year design lives and were launched by 2004 and 2009 respectively. Second, that L1C, L5 and L2C are all still pre-operational thanks to the OCX debacle. L1C and L2C really modernize the signal structure to improve accuracy.