Distribution Characteristics of the Induced Electromagnetic Field of a Submarine Wake

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

doi:10.11993/j.issn.2096-3920.2025-0082

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WANG Xiangjin, ZHANG Jiansheng, WANG Xintong, YAN Linbo, LAN Qing. Distribution Characteristics of the Induced Electromagnetic Field of a Submarine Wake[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0082

Citation:

WANG Xiangjin, ZHANG Jiansheng, WANG Xintong, YAN Linbo, LAN Qing. Distribution Characteristics of the Induced Electromagnetic Field of a Submarine Wake[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0082

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Distribution Characteristics of the Induced Electromagnetic Field of a Submarine Wake

doi: 10.11993/j.issn.2096-3920.2025-0082

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

Received Date: 2025-06-30
Accepted Date: 2025-09-26
Rev Recd Date: 2025-09-13

Available Online: 2025-12-02

Abstract

Abstract

The induced electromagnetic field generated by a submarine's wake cutting through the geomagnetic field provides a new approach for the non-acoustic detection of submarine. However, existing research has primarily focused on surface ships or environments with finite water depth, and has yet to thoroughly reveal the influence law of submersion depth on the wake's electromagnetic field in infinitely deep waters. To address this issue, this study employs numerical simulations based on Maxwell's equations and fundamental hydrodynamic theories, utilizing a mathematical model of the induced electromagnetic field in a submarine's wake. The distribution characteristics of the field at two typical depths—10 m and 50 m—are specifically compared and analyzed. The results indicate that when a submarine moves underwater, its wake velocity field exhibits a typical V-shaped distribution. The induced electromagnetic field of the wake decays exponentially along the trajectory. The research clearly reveals the differential impact of the depth effect: as the submersion depth increases, the peak induced magnetic field strength significantly decreases (from 0.3 nT to 0.1 nT), while the peak induced electric field strength increases (from 1 μV/m to 3 μV/m). This study theoretically and through simulation elucidates the influence of submersion depth on the electromagnetic field, confirms the feasibility of adopting differentiated detection strategies for targets at different depths, and provides a new theoretical basis for deep-sea target detection.
- non-acoustic detection,
- wake characteristics,
- uniform conducting medium,
- numerical simulation,
- induced electromagnetic field

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References(13)

References

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