[time-nuts] Calculating frequency differences using Lissajou figures

[Lux, Jim (337C)]

On 11/7/09 12:29 PM, "Bruce Griffiths" <bruce.griffiths at xtra.co.nz> wrote:

> Tom Va
>> 100 ns / 182 s = 5.495e-10 on November 7
>> 100 ns / 188 s = 5.319e-10 on December 7
>> 
>> So your frequency drift in this example is 1.7e-11 / month.
>> 
>> /tvb
>> 
> Not quite, you need to take the sign of the frequency difference into
> account.
> ie in your example above the sign of the error measured on November 7
> has to be identical to the sign of the error measured on December 7 for
> your calculation to be correct.
> 

But the sign of the difference would be obvious from the rotation direction
of the Lissajous.