[time-nuts] I've been thinking about a GPS receiver experiment

Mark Sims holrum at hotmail.com
Thu Oct 26 17:28:46 UTC 2017

Many years ago I  tried to add some code to Lady Heather to calculate the tempco and aging of the oscillator in a normally running Tbolt.   Although the equations would theoretically work (using SVD decomposition) it seldom worked properly.   Failure seemed to be caused by noise in the small numbers involved.   I wound up adding code that could do it by disabling disciplining to get aging and varying the temperature to get tempco.


> Separating this and that input to get a good value for a specific parameter is rarely done with good accuracy

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