[time-nuts] GPS backup for the stationary time and frequencyuser

jimlux jimlux at earthlink.net
Fri Oct 8 18:24:53 UTC 2010


J. Forster wrote:
> I've been half following this thread and can't make out the reason for a
> less than hemispheric antenna pattern. GPS needs several birds to lock up,
> and if you look at a single bird, Dopplar will make the signal useless as
> a frequency reference.
> 
>

If you're looking at boosting the level of the WAAS signal, it's 
broadcast from a Clarke Orbit satellite, and has no doppler.



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