Unmanned Aerial Vehicle Aeromagnetic Positioning Method for Nearshore Submarine Cables Based on Power Frequency Magnetic Characteristics

SUN Yunkun; LI You; CAO Xiangdong; CHEN Mei; ZHANG Lei; LI Minyue; ZHAO Jie; HAN Qi

doi:10.11993/j.issn.2096-3920.2025-0083

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Article Navigation > Journal of Unmanned Undersea Systems > 2026 > Accepted Manuscript

SUN Yunkun, LI You, CAO Xiangdong, CHEN Mei, ZHANG Lei, LI Minyue, ZHAO Jie, HAN Qi. Unmanned Aerial Vehicle Aeromagnetic Positioning Method for Nearshore Submarine Cables Based on Power Frequency Magnetic Characteristics[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0083

Citation:

SUN Yunkun, LI You, CAO Xiangdong, CHEN Mei, ZHANG Lei, LI Minyue, ZHAO Jie, HAN Qi. Unmanned Aerial Vehicle Aeromagnetic Positioning Method for Nearshore Submarine Cables Based on Power Frequency Magnetic Characteristics[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0083

Citation:

SUN Yunkun, LI You, CAO Xiangdong, CHEN Mei, ZHANG Lei, LI Minyue, ZHAO Jie, HAN Qi. Unmanned Aerial Vehicle Aeromagnetic Positioning Method for Nearshore Submarine Cables Based on Power Frequency Magnetic Characteristics[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0083

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Unmanned Aerial Vehicle Aeromagnetic Positioning Method for Nearshore Submarine Cables Based on Power Frequency Magnetic Characteristics

doi: 10.11993/j.issn.2096-3920.2025-0083

1.
Zhejiang Huadong Geotechnical Investigation & Design Institute Co, Ltd Hangzhou 310000, China
2.
Department of Computing, Harbin Institute of Technology, Harbin 150001, China
3.
CGEG(Beijing) Geological Instrument Factory Co., Ltd, Beijing 100015, China

Received Date: 2025-07-02
Accepted Date: 2025-09-26
Rev Recd Date: 2025-08-21

Available Online: 2026-01-07

Abstract

Abstract

Aiming at the technical bottleneck of high-precision detection and positioning of the "last mile" of nearshore submarine cables, this study proposes a comprehensive unmanned aerial vehicle(UAV) aeromagnetic detection method integrating the analysis of power frequency magnetic field characteristics. Firstly, a forward model of the power frequency magnetic field of submarine cables is established, and the propagation and attenuation law of the power frequency magnetic characteristic signal of the cables is revealed through numerical simulation. Secondly, an innovative frequency-domain signal extraction algorithm based on power frequency magnetic characteristics is constructed, effectively improving the recognition accuracy of weak magnetic signals in the background of strong environmental noise. Then, a reverse analytical positioning method combined with the geomagnetic direction is proposed to achieve the meter-level spatial inversion of the direction of submarine cables. The experiment adopted the self-developed rotorcraft ultra-low-altitude (flight altitude of 1 meter) magnetic measurement unmanned aerial vehicle system to conduct actual measurement and verification in the coastal waters of Wenzhou. The results show that the system conducts aerial magnetic detection operations of power frequency magnetic characteristics under the complex terrain conditions of the intertidal zone. Through comparative analysis, it is found that the power frequency characteristic positioning method has significant advantages over the conventional magnetic anomaly positioning method in the nearshore shallow water area. Its positioning error does not exceed 4 meters, and it can accurately track the cable burial path. This research provides a new technical paradigm for the inspection and positioning of submarine cable projects.

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References(18)

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