[time-nuts] OT - GPS and North

Magnus Danielson magnus at rubidium.dyndns.org
Sat Nov 21 14:22:20 UTC 2009


iovane at inwind.it wrote:
> Does a stationary (not in motion) GPS receiver know where the North is?
> 
> As far 
> as I can understand, it doesn't, isn't it?

Not one with a unidirectional antenna, which is the usual stuff.

If you have multiple antennas you can sort out the directions. But it is 
an expensive way of achieving it.

If your antenna moves you can detect the heading relative north.

A sensor to sense the magnetic field is fairly inexpensive so that is 
being used.

Cheers,
Magnus



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