Measurement of bistatic sea surface scattering with a parametric acoustic source

This work presents the results from a series of bistatic sea surface scattering experiments conducted in shallow water using a parametric acoustic array as a source and a receiver comprising a horizontal linear array. The experiments measured scattering at three frequencies (4, 8, and 15 kHz) and at three incident grazing angles (13º, 20º, and 30º). The measurements were made over a 5 day period during which a variety of environmental conditions were encountered. This paper provides an outline of the experiments and presents some results for the forward scattering strength. The results show that the wave direction has a significant effect on the surface forward scattering. At each incident grazing angle, the fluctuations of scattering strength due to environmental conditions decreases as the frequency increases.

10.1121/10.0010160

0001-4966

2474-2485

Yang, Zhiguo

2aaced91-a197-41ea-b39e-472a021e60bc

Liu, Baohua

d9852f6a-01cd-49de-b470-88e237fc7d42

Qi, Lehua

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White, Paul

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Li, Jianghui

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Kan, Guangmin

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Yu, Shengqi

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11 April 2022

Yang, Zhiguo

2aaced91-a197-41ea-b39e-472a021e60bc

Liu, Baohua

d9852f6a-01cd-49de-b470-88e237fc7d42

Qi, Lehua

d6c3d1f8-2884-4d51-9da2-0dd69d48b6df

White, Paul

2dd2477b-5aa9-42e2-9d19-0806d994eaba

Li, Jianghui

1bb43f69-b148-4f64-bfbb-6c3ada9dd7af

Kan, Guangmin

73481f90-39bf-471c-a54e-125b906fea29

Yu, Shengqi

fdfde461-a752-4876-964b-537877c3da4a

Yang, Zhiguo, Liu, Baohua, Qi, Lehua, White, Paul, Li, Jianghui, Kan, Guangmin and Yu, Shengqi (2022) Measurement of bistatic sea surface scattering with a parametric acoustic source. The Journal of The Acoustical Society of America, 151 (4), 2474-2485. (doi:10.1121/10.0010160).

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Accepted/In Press date: 24 March 2022

Published date: 11 April 2022

Additional Information: Funding Information: The authors would like to thank Professor Eric I. Thorsos and Dajun Tang based at the Applied Physics Laboratory of University of Washington for providing advice on the experiments and analysis of the scattering data, and Professor Victor Humphrey based at the University of Southampton for his insight into the parametric array calibration. This research was supported by the National Natural Science Foundation of China (NSFC) (Grants Nos. 41527809, 41706066, and 41676055); the Opening Fund of Qingdao National Laboratory for Marine Science and Technology (Grant No. QNLM2016ORP0209); the Shandong Provincial Key Research and Development Program, China (Grant No. 2016GSF115033); and the Taishan Scholar Project Funding (Grant No. tspd20161007). Publisher Copyright: © 2022 Acoustical Society of America.