Rob Seaman scripsit:
> Most troubling would be if two moving platforms are depending on GPS
> units with differing delays, e.g., two airplanes following neighboring
> flight paths. How far does an airplane move in 2 seconds? What is
> the minimum separation required by the FAA?
Jetliners travel at about 550 mi/hr, or 246 m/s. Required horizontal
separation depends on circumstances, but is rarely less than 3 miles =
4828 m. So if the discrepancy is 2 s, there is a safety factor of
about an order of magnitude. Good enough.
--
So that's the tune they play on John Cowan
their fascist banjos, is it? cowan_at_ccil.org
--Great-Souled Sam http://www.ccil.org/~cowan
Received on Thu Jul 06 2006 - 10:51:26 PDT