Open AccessAutomatic quality assessment and optimisation of quadratic time–frequency representations
Author(s) -
Malnar D.,
Sucic V.,
O'Toole J.M.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.0489
Subject(s) - measure (data warehouse) , solver , quadratic equation , quality (philosophy) , time–frequency analysis , algorithm , function (biology) , computer science , mathematical optimization , differential (mechanical device) , mathematics , data mining , computer vision , engineering , philosophy , geometry , epistemology , filter (signal processing) , evolutionary biology , biology , aerospace engineering
A fully automatic method for optimising the smoothed‐pseudo Wigner‐Ville distribution is presented. An alternative view on time–frequency representations (TFRs) through correlation intensity landscapes is offered, and the notion of wanted and unwanted correlations and their balance is introduced which is introduced as the measure of quality. The problem of optimising TFRs is then formulated as the cost function based on this measure. With the differential evolution algorithm as the solver, the method's performance is tested on synthetic and real‐life signals.