Passive Acoustic Source Depth Discrimination with Two Hydrophones in Shallow Water

	Passive Acoustic Source Depth Discrimination with Two Hydrophones in Shallow Water
	Du, Jinyan 1; Zheng, Yi 1; Wang, Zhongqiu 1; Cui, Hao 1; Liu, Zongwei 2
	2016
关键词	depth discrimination waveguide invariant LOFAR diagram two dimensional discrete Fourier transform
英文摘要	It is important for sonar systems to distinguish the submerged source from the surface one. Current approaches based on matched field processing, mode scintillation and mode filtering require either precise knowledge of the ocean environment parameters or densely populated hydrophone arrays, and become problematic in practical use. Current waveguide invariant based method, deriving the distribution of the waveguide invariant from the LOFAR diagram using standard Radon transform or standard Hough transform, will have a large error variance when the interference striation is break off or intersect with each other, resulting in a bad performance. This paper proposed a new method of source depth discrimination which uses the local angle of the interference striations directly from the LOFAR diagram with the help of two dimensional discrete Fourier transform. The method analyzes the existing LOFAR diagram and needs no prior information of the ocean environment. It is more robust and computation efficient because of the accumulate effect and the use of FFT.
会议录	OCEANS 2016 - SHANGHAI
会议录出版者	IEEE
会议录出版地	345 E 47TH ST, NEW YORK, NY 10017 USA
语种	英语
WOS研究方向	Engineering ; Oceanography ; Remote Sensing
WOS记录号	WOS:000386521800257
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26114]
专题	自然资源部第一海洋研究所
通讯作者	Du, Jinyan
作者单位	1.Shandong Acad Sci, Inst Oceanog Instrumentat, Shandong Prov Key Lab Ocean Environm Monitoring T, Qingdao, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Du, Jinyan,Zheng, Yi,Wang, Zhongqiu,et al. Passive Acoustic Source Depth Discrimination with Two Hydrophones in Shallow Water[C]. 见:.