Extraction of Underwater Acoustic Signals across Sea–Air Media Using Butterworth Filtering
Abstract
:1. Introduction
2. The Theoretical Modeling of Underwater Acoustic Signal Detection across Sea–Air Media
2.1. The Theoretical Modeling of Cross-Sea–Air Media Communication Channels
2.1.1. The Modeling of Underwater Acoustic Signals
2.1.2. The Modeling of the Sea–Air Interface
2.1.3. The Modeling of the Air RF Signal
2.2. The Detection and Extraction of Acoustic Micromotion Signals
3. The Theoretical Simulation and Analysis of Underwater Acoustic Signals for Cross-Sea–Air Media Detection
3.1. The Simulation of Acoustic Water Surface Micromotion
3.2. The Simulation of Cross-Sea–Air Media Detection
4. The Experimental Process and Results of Detecting Underwater Acoustic Signals across Sea–Air Media
4.1. Introduction to the Experimental Environment
4.2. Experimental Result
4.2.1. The Effect of the Sound Source Level on the Amplitude and SNR of Water Surface Waves
4.2.2. The Effect of Frequency Variation on the Amplitude and Signal Power of Water Surface Waves
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Device Name | Model | Remarks |
---|---|---|
FMCW millimeter-wave radar | AWR1642 | TI 77~81 GHz |
Radar data acquisition card | DAC1000EVM | TI |
Underwater speakers and power amplifier | L6A | 200 Hz~120 kHz |
Hydrophone | RHSA-5 | 715 |
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Cui, T.; Cao, X.; Yang, Y.; Tan, Q.; Du, Y.; Zhang, T.; Yuan, J.; Zhu, Z.; Yao, J. Extraction of Underwater Acoustic Signals across Sea–Air Media Using Butterworth Filtering. J. Mar. Sci. Eng. 2024, 12, 1469. https://doi.org/10.3390/jmse12091469
Cui T, Cao X, Yang Y, Tan Q, Du Y, Zhang T, Yuan J, Zhu Z, Yao J. Extraction of Underwater Acoustic Signals across Sea–Air Media Using Butterworth Filtering. Journal of Marine Science and Engineering. 2024; 12(9):1469. https://doi.org/10.3390/jmse12091469
Chicago/Turabian StyleCui, Tengyuan, Xiaolong Cao, Yiguang Yang, Qi Tan, Yuchen Du, Tongchang Zhang, Jiaqi Yuan, Zhenyuan Zhu, and Jianquan Yao. 2024. "Extraction of Underwater Acoustic Signals across Sea–Air Media Using Butterworth Filtering" Journal of Marine Science and Engineering 12, no. 9: 1469. https://doi.org/10.3390/jmse12091469