NDLI: Data-based fused modal scintillation index for depth classification of a moving source using a single receiver

Content Provider	IET Digital Library
Author	Shi, Junjie Sun, Dajun Fu, Hongling Liu, Qingyu Zhang, Wensong
Abstract	A data-based discriminant based on fusing the scintillation of normal mode amplitudes is proposed for depth classification of surface/submerged moving source passively in a shallow water waveguide. The approach is based on a modified Hankel transform to estimate the modal wavenumber spectrum using the synthetic aperture created by the moving source. The modal wavenumber peaks are corresponding to the terms of modal excitation time series associated with the temporal modulation of an acoustic source's depth, which is used to build the fused modal scintillation index (FMSI). FMSI's robustness is presented through analysing its dependence on the SSP, sediment properties, frequency, the receiver depth, and the source depth fluctuation. Real data for a ship of opportunity and a controlled towed source collected in South China Sea preliminarily illustrates FMSI's potential for depth classification. The fused modal scintillation approach may provide a robust method for qualitative binary source depth classification.
Starting Page	2151
Ending Page	2157
Page Count	7
ISSN	17518784
Volume Number	13
e-ISSN	17518792
Issue Number	Issue 12, Dec (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/13/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2019.0150
Journal	IET Radar, Sonar & Navigation
Publisher Date	2019-08-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acoustic Radiators Acoustic Receivers Acoustic Source Depth Acoustic Waveguide Controlled Towed Source Data-based Discriminant Data-based Fused Modal Scintillation Index General Linear Acoustics Hankel Transforms Modal Excitation Time Series Modal Scintillation Approach Modal Wavenumber Peaks Modal Wavenumber Spectrum Modified Hankel Transform Normal Mode Amplitudes Qualitative Binary Source Depth Classification Receiver Depth Scintillation Sediments Shallow Water Waveguide Ship Single Receiver Source Depth Fluctuation South China Sea Surface-submerged Moving Source Synthetic Aperture Temporal Modulation Time Series Underwater Sound
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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