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Mathematical Problems in Engineering
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2022
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Article
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Fig 4
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Research Article
Feature Extraction of Ship Radiation Signals Based on Wavelet Packet Decomposition and Energy Entropy
Figure 4
Energy distribution of four types of SRS (1 sample). (a) SRS1. (b) SRS2. (c) SRS3. (d) SRS4.
(a)
(b)
(c)
(d)