![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/448423/image.png)
allanvar() surprising behavior for large Tau
6 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
I compared Matlab build-in allanvar() funtion to script provided in NXP AN5087 and can see significant difference for Allan deviation at large tau.
This happens for very large data count, e.g. >1e7.
AN5087 is much closer to expected behavior: slope -1/2 then slope +1/2 !
So I would not recomend using allanvar() for very large datafiles !
0 comentarios
Respuestas (1)
Sean
el 6 de Dic. de 2020
I think I'm observing the same problem. It is easy to reproduce using the following code
[sigma,tau] = allanvar(rand([1,1e8]));
figure;loglog(tau,sigma,'.:')
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/448423/image.png)
0 comentarios
Ver también
Categorías
Más información sobre Specialized Power Systems en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!