[time-nuts] Re: 3-Cornered Hat fails with negative variances, is there anything I can to to improve?

[Erik Kaashoek]

Hi Magnus,
Thanks, will try a longer measurement.
As I can do simultaneous absolute phase relation measurement of 3 
sources  (Phase A vs B, B vs C, C vs A), is there a way to not use the 
phase variance but a more direct relation?
I may be able to calculate A,B and C directly from the 3 equations at 
every Tau.
This would hide a common noise component but after some time this noise 
should cancel out, I hope
Erik


On 16-10-2022 1:11, Magnus Danielson via time-nuts wrote:
> There is a built-in weakness into 3-cornered hat that achieves this 
> and it is only when you have long measurs that it tends to resolve 
> itself. Some research being done suggest that Grosslambert processing 
> avoids it, but it is not off the shelf processing but what is 
> recommended in latest revision of IEEE Std 1039 do use for the situation.