Fig. 9
From: Marine reef soundscape monitoring with fiber-optic distributed acoustic sensing
Characterization results of the DAS system using a PZT at two different frequencies. (a) and (c) Spatiotemporal heatmaps for 500 Hz and 800 Hz vibrations, respectively. (b) and (d) Detected frequency spectra matching the waveform generator’s output for 500 Hz and 800 Hz, respectively.
