[time-nuts] How can I measure GPS Antenna quality?

Hal Murray hmurray at megapathdsl.net
Sun Nov 20 17:13:58 EST 2016


Is that even a sensible question?  Is there a better way to phrase it?


The problem I'm trying to avoid is that the weather and the satellite 
geometry change over time so I can't just collect data for X hours, switch to 
the other antenna or move the antenna to another location, collect more data, 
then compare the two chunks of data.

The best I can think of would be to setup a reference system so I can collect 
data from  2 antennas and 2 receivers at the same time.  It would probably 
require some preliminary work to calibrate the receivers.  I think I can do 
that by swapping the antenna cables.


If I gave you a pile of data, how would you compute a quality number?  Can I 
just sum up the S/N slots for each visible/working satellite?


-- 
These are my opinions.  I hate spam.






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