[time-nuts] Best Chance GPS module

Jay Grizzard elfchief-timenuts at lupine.org
Wed Nov 30 18:49:07 EST 2016


On 2016-11-30 13:45 , André Esteves wrote:
> Millimeter accurate GPS in smartphones and self driving cars would
> result from tiny atomic clocks
I saw a different form of this article a month or so back, and for the 
life of me I can't figure out how having a tiny atomic clock helps GPS 
accuracy at all (nor how it would help w/ inertial reckoning, which was 
a claim I saw in a different article on the same folks). Especially 
since (AFAIK) the error budget of the GPS system in general far exceeds 
"millimeter" accuracy, without post-processing all your data...

I'm also pretty sure numerous people here would object to the 
characterization of atomic clocks as "room sized", in general. ;)

-j


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