RCMFRDE: Refined Composite Multiscale Fluctuation-Based Reverse Dispersion Entropy for Feature Extraction of Ship-Radiated Noise

Figure 11

The distribution of MPE for four types of S-NS under double features. (a) SF1 and SF2. (b) SF1 and SF3. (c) SF1 and SF4. (d) SF1 and SF5.

(a)

(b)

(c)

(d)