[time-nuts] HP 523B frequency counter & Sputnik
brooke at pacific.net
Thu Oct 4 16:08:09 EDT 2007
Is this a typo on the Ashby-Relativity.htm web page?
"At present one cannot easily perform tests of relativity with the system
because the SV clocks are actively steered to be within 1 microsecond of
Universal Coordinated Time (USNO)."
http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam
Tom Van Baak wrote:
> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+brooke=pacific.net at febo.com RETRY
>>Tom Van Baak wrote:
>>>A little known piece of Sputnik history...
> Brooke Clarke wrote:
>>I think it's more than fair to say sputnik is the grandfather of GPS.
> Yeah, my first thought when I ran across that HPJ article was,
> wow, even the first satellite had -- an oscillator! The other thing
> to note is that the combination of Sputnik and Dr. Peterson (at
> Stanford) were the "space segment" and "user segment"; two
> phrases familiar to anyone reading introductions to GPS. No
> "control segment", however.
> If 40-year old Sputnik (quartz in space) is the grandfather, is
> 30-year old NTS-2 (cesium in space) the father of GPS? See:
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts