Peng Li, Yang Zhao, Zhiquan Zhou, Penghui Zhang, Xue Bai, Jian Ma. Research on laser induced acoustic detection of trans-media aerial-underwater[J]. Infrared and Laser Engineering, 2021, 50(5): 20200310
- Infrared and Laser Engineering
- Vol. 50, Issue 5, 20200310 (2021)
Fig. 1. Laser induced acoustic telemetry model
Fig. 2. Relationship between extinction length of water and sound wavelength
Fig. 3. The sound field directivity model of LIA
Fig. 4. [in Chinese]
Fig. 4. Schematic diagram of the experimental device. (a) Laser-based ultrasonic system; (b) Signal acquisition and processing equipment
Fig. 5. Schematic diagram of experimental device
Fig. 6. Record diagram of experimental process
Fig. 7. Three-dimensional diagram of the experimental process
Fig. 8. Signal peak 3D imaging curved surface
Fig. 9. A, B and C receive the laser pulse signal waveform
Fig. 10. Spectrum of laser-induced acoustic signal
Fig. 11. Diagram of signal drift of A-D and A-E with sound distance change. (a) A-D signal drift; (b) A-E signal drift
Fig. 12. Influence of water surface disturbance on LIA signals
Fig. 13. Finite element model of LIA
Fig. 14. Comparison of sound pressure signals received by the probe
Fig. 15. Sound pressure signals at laser excitation and reception
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