[time-nuts] Choke Ring Pictures

Mark Sims holrum at hotmail.com
Tue Mar 16 04:14:57 UTC 2010


Whatever the Tbolt firmware disciplining is doing,  it isn't particularly good.  I seriously doubt that they are doing any carrier phase processing.  If they were then the fixes would show much less dispersion than they do.

Lady Heather 3.0 beta does have an alternate "external" oscillator disciplining algorithm in the works that bypasses the internal firmware disciplining algorithm and does the oscillator control in a manner much more suited to time nuttery needs.   The results so far are rather remarkable...  oscillator errors in the very low parts per trillion range, etc


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There's no way to tell if the GPS receiver itself uses carrier phase 
data internally. 		 	   		  
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