Year: 2025
Type: article
Abstract: A cross air-water interface hydroacoustic signal detection method based on microvibration detection at the air-water interface is proposed.Laser speckles modulated by water surface acoustic waves are recorded and used as an information carrier.Phase correlation and multichannel fusion algorithms are used to extract and enhance hydroacoustic signals.Wide frequency range (200 Hz to 20 kHz) underwater acoustic signals are detected with a frequency relative error smaller than 0.5%.Several common artificial and natural hydroacoustic signals are used as source signals and correctly reconstructed.The average intelligibility of recovered humpback whale signals evaluated with the normalized subband envelope correlation algorithm is 0.52 ± 0.02.
Source: Chinese Optics Letters
Authors: Lize Deng, Jiajia Liang, Xueyuan Huang, Wei Guo, Xiaozhong Wang, Hongyan Fu, Zhengqian Luo
Institution: Xiamen University
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
Award: G3270961511
OpenAlex ID: W4411291726