[time-nuts] Time transfer, internationally before GPS

[Bob Camp]

Hi

One of the early relativity confirmation experiments was done with very similar clocks before that film clip was made. There were a number of corrections made as part of the trip. One of them was to re-confirm the traveling Cs once it got back to it’s starting point. You only could “use” the trip if the Cs came back home still on time.

There were a *lot* of satellite time transfer experiments in the 60’s and 70’s. They worked well enough to reduce the frequency of clock trips, but not well enough to eliminate them. The GPS common view stuff was the first approach that (with proper calibration) got them to a better level of time transfer than a clock trip.

Bob

On Mar 3, 2014, at 9:50 PM, Max Robinson <max at maxsmusicplace.com> wrote:

> The piece didn't say anything about correcting for acceleration.
> 
> Regards.
> 
> Max.  K 4 O DS.
> 
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> ----- Original Message ----- From: "Jimmy Burrell" <jimmydburr at gmail.com>
> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
> Sent: Monday, March 03, 2014 7:17 PM
> Subject: [time-nuts] Time transfer, internationally before GPS
> 
> 
>> My apologies to the list if this has been posted before but I found it fascinating. I'm guessing this was early 60's.
>> 
>> I wonder if this practice continued until the advent of GPS? I be interested to know if there was an interim technology and what it was.
>> 
>> http://youtu.be/SXV4c5eVkE4
>> 
>> 
>> Jim...
>> N5SPE
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