Hilbert-Huang transform - nonlinear signals

[mateo]

Hello all!

I have one question. I read a lot about Hilbert-Huang transform (HHT).
Theory says, that method is suitable for analyzing nonstationary and nonlinear signals.

I think I know what is the definition for "nonstationar signals". But what execly are "nonlinear signals"? What is the definition?

Thank you in advance for any kind of help.

Mateo.

 

[mondunno]

signals which cant be predicted from past and present data (linear prediction fails, the uncertainity in signals is too high)

https://books.google.co.in/books?id...gh2JEKc&sig=CbbM03lsRfHZKGicxIk_Sh04vhI&hl=en