Fig. 2.
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Top panel: Simulated sinusoidal signal S(t) with a period of 0.5 days and three excitations randomly distributed in time. It is shown for a time series of 10 days sampled at 60 seconds. The excitations are exponentially decaying. Bottom panel: Energy E(t) = 2|S(t)|2 corresponding to the simulated signal is shown in grey and the reconstructed energy is shown in dashed black.
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