Spectrum characteristics for internal wave signals of a self-propelled model
Source abstract
Abstract
Internal waves induced by an underwater self-propelled body expose its existence by changing the sea surface roughness. This study employs short-time Fourier transform to perform the time–frequency analysis on the internal wave signal captured in the experiments. Some key characteristics of the underwater self-propelled body are obtained through the spectrum analysis of the internal wave wake signal. Moreover, the influence of the interaction between the momentums induced by the propulsion and drag force is discussed. The results show that the action of the self-propelled body has varying degrees of influence on the symmetry and spatial distribution of the spectrum characteristics of the signal.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fluid Dynamics Simulations and Interactions · Ocean Waves and Remote Sensing · Ship Hydrodynamics and Maneuverability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Noise & Vibration, Naval University of Engineering 1 , Wuhan 430033, China
National Key Laboratory on Ship Vibration & Noise 2 , Wuhan 430033, China
Unit 92578 of PLA 3 , Beijing 100161, China
Military Marine Environment Construction Office of Navy Staff 4 , Beijing 100161, China
5College of Underwater Acoustic Engineering, Harbin Engineering University
Funding
National Nature Science Foundation of China
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