[time-nuts] Simulation of oscillator noise

[Magnus Danielson]

On 11/28/2013 03:28 PM, Jim Lux wrote:
> On 11/28/13 1:35 AM, Wolfgang Wallner wrote:
>>
>> Hello Time-Nuts community,
>>
>> I'm interested in the simulation of oscillator noise (especially in
>> discrete event simulators).
>>
>>
>> PS: When I use the word oscillator I mean the cheap quartz
>> oscillators as found in typical consumer electronic stuff.
>> PPS: I'm not sure if this mailing-list is the right place to ask my
>> questions, as simulation is not listed in your mailing-list topics.
>> Sorry if this mail is off-topic.
>
>
> I think it's the right place..  There's plenty of Allan deviation
> plots and data here for just about any kind of oscillator you care to
> name.
>
> One way to generate realistic spectra is to take white noise from a
> random number generator and run it through a filter which has the
> right shape (e.g. 1/f, etc.).
>
> Essentially this is implementing the Leeson model explicitly.
Make sure that you use different noise sources as you add different
distributions up, since they should not correlate with each other for
things to match up as you want.

Cheers,
Magnus