An Experiment of the Actual Vertical Resolution of the Sub-bottom Profiler in an Anechoic Tank

doi:10.24425/aoa.2019.126364

	An Experiment of the Actual Vertical Resolution of the Sub-bottom Profiler in an Anechoic Tank
	Wang, Fangqi; Dong, Lifeng; Ding, Jisheng; Zhou, Xinghua; Tao, Changfei; Lin, Xubo; Liang, Guanhui
刊名	ARCHIVES OF ACOUSTICS
	2019
卷号	44 期号:1 页码:185-194
关键词	sub-bottom profiler (SBP) pulse width (PW) vertical resolution duration of reflection event (DRE)
ISSN号	0137-5075
DOI	10.24425/aoa.2019.126364
英文摘要	Sub-bottom profiler (SBP) is an acoustic instrument commonly used to survey underwater shallow geological structure and embedded objects whose most important performance parameter is the actual vertical resolution. This paper presented a methodology to measure and evaluate the actual vertical resolution of SBP based on an experiment in an anechoic tank, which was divided into three components:building of artificial geological model, measurement of acoustic parameters, and determination of actual vertical resolution of the acoustic profiles. First, the wedge-shaped geological model, whose thickness could be accurately controlled, was designed and built in an anechoic tank to try to directly measure the vertical resolution of SBP. Then, the acoustic pulse width of SBP was measured to calculate the theoretical general vertical resolution and extreme vertical resolution. Finally, based on the acoustic profiles obtained in the experiment, the method which was used to evaluate the actual vertical resolution by measuring the duration of reflection event was put forward. Due to comparing measurement data of different parameter settings of the SBP, the study has revealed that the SBP had the lowest resolution in the 4 kHz-500 mu s setting, which was 226.5 mu s, or 36.2 cm, and the highest resolution in the 15 kHz-67 mu s setting, which was 72.7 mu s, or 11.6 cm. The vertical resolution decreased with the increase of the pulse width. The results also showed that the actual resolution was close to the theoretical general resolution and far from the extreme resolution.
资助项目	National Natural Science Foundation of China[41606056]
WOS关键词	SEA BOTTOM
WOS研究方向	Acoustics
语种	英语
出版者	POLSKA AKAD NAUK, POLISH ACAD SCIENCES, INST FUNDAMENTAL TECH RES PAS
WOS记录号	WOS:000459052100018
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27306]
专题	自然资源部第一海洋研究所
通讯作者	Wang, Fangqi
作者单位	State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fangqi,Dong, Lifeng,Ding, Jisheng,et al. An Experiment of the Actual Vertical Resolution of the Sub-bottom Profiler in an Anechoic Tank[J]. ARCHIVES OF ACOUSTICS,2019,44(1):185-194.
APA	Wang, Fangqi.,Dong, Lifeng.,Ding, Jisheng.,Zhou, Xinghua.,Tao, Changfei.,...&Liang, Guanhui.(2019).An Experiment of the Actual Vertical Resolution of the Sub-bottom Profiler in an Anechoic Tank.ARCHIVES OF ACOUSTICS,44(1),185-194.
MLA	Wang, Fangqi,et al."An Experiment of the Actual Vertical Resolution of the Sub-bottom Profiler in an Anechoic Tank".ARCHIVES OF ACOUSTICS 44.1(2019):185-194.