Peter Krengel wrote:
Hi nuts,
have got some interesting question from friends.
They asked
What coordinates are measured and registrated by a GPS.
Is it the position of the antenna, it could be 100m (300ft) away from me
or is it the position of the GPS RX as this is the position of the µC where
signals are processed?
Where the antenna is..
I answered, its allways the antenna position as there is the point where
wave fronts coming in from the sats becomes electrical signals (note we are
not talking about PPS but coordinates)...
Pretty good..
Another analogy is that if you had a machine that recorded all the
signals, mounted right at the antenna, and then carried the recording
half way around the world, and then ran the recording into a receiver,
it would give you the position of the antenna, not the receiver. The
cable is just a time delay.
What do you think?
Peter, DG4EK
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