Modeling of Wake-Induced Electromagnetic Fields of Undersea Vehicles and Analysis of Internal Wave Characteristics in Stratified Ocean

WANG Xiangjin; ZHANG Jiansheng; WANG Xintong; YAN Linbo; LAN Qing

doi:10.11993/j.issn.2096-3920.2025-0162

Volume 34 Issue 4

Aug 2026

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Article Navigation > Journal of Unmanned Undersea Systems > 2026 > 34(4): 627-634

WANG Xiangjin, ZHANG Jiansheng, WANG Xintong, YAN Linbo, LAN Qing. Modeling of Wake-Induced Electromagnetic Fields of Undersea Vehicles and Analysis of Internal Wave Characteristics in Stratified Ocean[J]. Journal of Unmanned Undersea Systems, 2026, 34(4): 627-634. doi: 10.11993/j.issn.2096-3920.2025-0162

Citation:

WANG Xiangjin, ZHANG Jiansheng, WANG Xintong, YAN Linbo, LAN Qing. Modeling of Wake-Induced Electromagnetic Fields of Undersea Vehicles and Analysis of Internal Wave Characteristics in Stratified Ocean[J]. Journal of Unmanned Undersea Systems, 2026, 34(4): 627-634. doi: 10.11993/j.issn.2096-3920.2025-0162

Citation:

WANG Xiangjin, ZHANG Jiansheng, WANG Xintong, YAN Linbo, LAN Qing. Modeling of Wake-Induced Electromagnetic Fields of Undersea Vehicles and Analysis of Internal Wave Characteristics in Stratified Ocean[J]. Journal of Unmanned Undersea Systems, 2026, 34(4): 627-634. doi: 10.11993/j.issn.2096-3920.2025-0162

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Modeling of Wake-Induced Electromagnetic Fields of Undersea Vehicles and Analysis of Internal Wave Characteristics in Stratified Ocean

doi: 10.11993/j.issn.2096-3920.2025-0162

School of Sciences, Xi’an Technological University, Xi’an 710021, China

Received Date: 2025-12-03
Accepted Date: 2026-03-09
Rev Recd Date: 2026-03-04

Available Online: 2026-06-29

Abstract

Abstract

To counter the threat posed by undersea vehicle stealth and meet the demand for the development of non-acoustic detection technology, this study focused on the action mechanism of electromagnetic effects induced by vehicle wakes in density-stratified ocean environments. Existing studies on wake electromagnetic fields are mostly based on the uniform fluid assumption, neglecting the effects of internal waves induced by stratification. To this end, this paper innovatively built a mathematical model for the velocity field of undersea vehicle wakes in stratified fluid, decomposing the wake into a linear superposition of surface wave and internal wave components, with the expression for wake-induced electromagnetic fields derived. By conducting numerical simulations, the spatial distribution, attenuation patterns, and component contributions of the induced magnetic field were analyzed for undersea vehicles at depths ranging from 10 m to 50 m. The results indicate that under stratified environments, the surface wave-induced magnetic field reaches the peak value of 0.15 nT in the near field but decays rapidly with distance. In contrast, the internal wave-induced magnetic field only has a peak value of 0.006 nT in the near field, and it features stable waveform coherence and slow decay, becoming dominant in the far field. Furthermore, as the submergence depth of the vehicle increases, the contribution of the internal wave grows significantly, reaching 84.9% in the near field at a depth of 50 m. This study reveals that as the key physical quantity for far-field detection, internal waves provide a theoretical basis for the development of long-range non-acoustic detection technologies for undersea vehicles.
- non-acoustic detection,
- undersea vehicle wake,
- stratified ocean,
- internal wave,
- induced electromagnetic field

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References(16)

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