[time-nuts] Loran-C & French Clocks

Ralph Smith ralph at ralphsmith.org
Tue Mar 17 15:05:21 EDT 2009


Not exactly the case.  Radio components of the ADS-B system require 100 ns
accuracy.  Multilateration systems also require very precise timing
between components.  The navigation and communications systems are most
definitely not looking at the hands of a mechanical watch.

Ralph

On Tue, March 17, 2009 9:06 am, Lux, James P wrote:
> The latter is probably because air traffic control is basically done at a
> resolution of 1 minute (e.g. "Hold at SADLE intersection, expect release
> at
> 32[minutes after the hour]") so the several second offset between UTC and
> GPS is immaterial.  You're looking at a mechanical watch in any case.
>
> Jim
>
>
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-- 
Ralph Smith
ralph at ralphsmith.org




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