Spectrum characteristics for internal wave signals of a self-propelled model-Reference-Cited by-同舟云学术

Spectrum characteristics for internal wave signals of a self-propelled model

Published:2022-10-01 Issue:10 Volume:12 Page:105227
ISSN:2158-3226
Container-title:AIP Advances
language:en
Short-container-title:AIP Advances

Author:

Chen Xin¹²^ORCID,Sheng Li³^ORCID,Xie Zhimin⁴⁵,Jia Di³,Shuai Chang-geng¹²

Affiliation:

1. Institute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, China

2. National Key Laboratory on Ship Vibration & Noise, Wuhan 430033, China

3. Unit 92578 of PLA, Beijing 100161, China

4. Military Marine Environment Construction Office of Navy Staff, Beijing 100161, China

5. College of Underwater Acoustic Engineering, Harbin Engineering University

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.

Funder

National Nature Science Foundation of China

Publisher

AIP Publishing

Subject

General Physics and Astronomy

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0104210

Reference20 articles.

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2. S. C. Xu, “Internal wave produced by moving submarine and simulation of SAR remote sensing of its wake,” Ph.D. thesis, Harbin Engineering University, 2006 (in Chinese).