Lieshan Zhang, Xiaolin Zhang, Wenyan Tang. Detection of water surface capillary wave by analysis of turning-point local signal data using a laser interferometer[J]. Chinese Optics Letters, 2017, 15(7): 071201
- Chinese Optics Letters
- Vol. 15, Issue 7, 071201 (2017)
Fig. 1. (Color online) Simulation signal.
Fig. 2. First turning-point local signal data of the simulation signal and its Fourier spectrum.
Fig. 3. Schematic diagram of experimental system.
Fig. 4. Interference detection signal of 2 kHz WSCW.
Fig. 5. Distribution of turning points (in circles) and envelopes of the base signal.
Fig. 6. Time domain and frequency domain distribution of the first turning point local signal.
Fig. 7. Amplitudes of (a) WSCWs and (b) hydrophone monitoring results under conditions of different driving signal.
Fig. 8. Basic frequencies of the turning-point local signals.
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Table 1. Processing Results of the Local Signals
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