a Department of Physics, University of Las Palmas de Gran Canaria, Las Palmas, Spain
b Unit of Marine Technology and Engineering, Technical University of Lisbon, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
Abstract:
A simple and efficient procedure to automatically distinguish between uni-modal and multi-modal scalar spectra, which is consistent with the random nature of the spectral density estimations, is proposed. The suggested methodology is based on the logarithmic transformation of the spectral estimations. Examples that demonstrate the procedure are presented.