[time-nuts] Important parameters for a GPS/GNSS antenna

Tom Van Baak tvb at LeapSecond.com
Thu May 7 11:18:05 EDT 2015


>> I wonder if anybody ever made a rotating GPS antenna to average out the
>> X-Y phase-center offset ?
 
> Of course, this does not really work with a gps antenna, unless you
> put the whole receiver onto the rotary table. But then you shift
> the problem onto the PPS output (note: amplitude noise translates
> into phase noise).

Attila,

My thought was to put PHK's proposed experiment entirely on the rotating table: antenna, receiver, local Cs standard, laptop, and battery. You could also get interesting data if you slightly offset the antenna from the center. It would make the ultimate GPS Spirograph. (for those of you under 40, http://en.wikipedia.org/wiki/Spirograph will explain)

/tvb


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