Measurements of Midfrequency Acoustic Backscattering From a Sandy Bottom in the South Yellow Sea of China | |
Yu, Shengqi1; Liu, Baohua1,2; Yu, Kaiben1; Yang, Zhiguo1; Kan, Guangming2,3; Feng, Zhibing4; Zong, Le1 | |
刊名 | IEEE JOURNAL OF OCEANIC ENGINEERING |
2018-10 | |
卷号 | 43期号:4页码:1179-1186 |
关键词 | Acoustic scattering midfrequency sandy sediment South Yellow Sea |
ISSN号 | 0364-9059 |
DOI | 10.1109/JOE.2017.2750303 |
英文摘要 | Acoustic bottom scattering is the main source of reverberation background in target detect' and recognition near the seafloor. Accurate estimation of bottom scattering strength is necessary for prediction of sonar performance in the presence of reverberation in shallow-water environments. A measurement of bottom backscattering strength at midfrequency in a shallow-water environment of the South Yellow Sea of China was carried out in April 2016, where the water depth was 39 m. The surface of the seafloor was relatively flat and covered by some shell fragments observed through a digital camera system. Core data showed that the main component of sediment at this experiment site was fine sand. The backscattering strength as a function of grazing angle (20 degrees-70 degrees) in the frequency range of 6-12 kHz was extracted from monostatic backscattering data, employing an omni-directional source and an omni-directional hydrophone. The measured backscattering strength increases with the increase of the grazing angle, and changes more rapidly at large grazing angles (60 degrees-70 degrees). Comparing the data at different frequencies, it is found that the measured backscattering strength slightly increases with the increase of the acoustic frequency. A lit of Lambert's law to the measured data shows that the backscattering strength deviates from the Lambert 's last at large grazing angles. Finally, the fitted result of a scattering Id to the measured data suggests that seafloor roughness scattering is larger than that from sediment volume heterogeneity in the measurement frequency band. |
资助项目 | Taishan Scholar Project Funding[tspd20161007] |
WOS研究方向 | Engineering ; Oceanography |
语种 | 英语 |
出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
WOS记录号 | WOS:000448542200028 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn/handle/2SI8HI0U/2785] |
专题 | 业务部门_海洋地质与地球物理研究室 |
作者单位 | 1.State Ocean Adm, Natl Deep Sea Ctr, Qingdao 266237, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China; 3.First Inst Oceanog, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China; 4.East China Univ Technol, Sch Geophys & Measurement Control Technol, Nanchang 330013, Jiangxi, Peoples R China |
推荐引用方式 GB/T 7714 | Yu, Shengqi,Liu, Baohua,Yu, Kaiben,et al. Measurements of Midfrequency Acoustic Backscattering From a Sandy Bottom in the South Yellow Sea of China[J]. IEEE JOURNAL OF OCEANIC ENGINEERING,2018,43(4):1179-1186. |
APA | Yu, Shengqi.,Liu, Baohua.,Yu, Kaiben.,Yang, Zhiguo.,Kan, Guangming.,...&Zong, Le.(2018).Measurements of Midfrequency Acoustic Backscattering From a Sandy Bottom in the South Yellow Sea of China.IEEE JOURNAL OF OCEANIC ENGINEERING,43(4),1179-1186. |
MLA | Yu, Shengqi,et al."Measurements of Midfrequency Acoustic Backscattering From a Sandy Bottom in the South Yellow Sea of China".IEEE JOURNAL OF OCEANIC ENGINEERING 43.4(2018):1179-1186. |
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