[time-nuts] OT [GPS Survey grade RX]

Magnus Danielson magnus at rubidium.dyndns.org
Sun Dec 5 20:21:11 UTC 2010


On 12/05/2010 08:43 PM, Jim Lux wrote:
> When you start getting to less than a meter.. For absolute, you need to start worrying about stuff like solid earth tides, plate movement, a whole host of things are all contributors in that 10-100 cm range.

Consider also that the ionosphere slightly bends the signal, such that 
the measured pseudo-range is longer than the actual range. This effect 
is a secondary feature of the phase-delay shift of pseudo-range.

Diffrential corrections adjusts most of this effect.

Cheers,
Magnus



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