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Title: State Grid Zhoushan Power Supply Company Pioneers Airborne Magnetic Detection for Rapid Intertidal Submarine Cable Localization

Zhou Shan, China, 18th Mar 2025 - The young R&D team of State Grid Zhoushan Power Supply Company has successfully applied "aero-magnetic detection technology" to achieve rapid positioning of submarine cables in intertidal zones, offering an innovative solution for this long-standing challenge. This breakthrough integrates high-sensitivity magnetic field detection, stable aerial platform control, and multi-source data processing, marking a critical step forward in expanding the scope and precision of submarine cable localization.Intertidal submarine cable detection has historically been a uncharted territory for conventional methods, plagued by the dilemma of " vessels cannot access and manual operations are extremely challenging." Traditional sonar struggles in silt-covered areas, while manual inspections are inefficient and high-risk. To address this, the company deployed "drones equipped with high-precision magnetometers" to capture magnetic field variations generated by energized submarine cables. Combined with an "acoustic-optical-magnetic" multi-modal fusion algorithm, the system penetrates shallow silt layers to rapidly identify cable magnetic signatures.The team further enhanced accuracy by integrating "gyroscope-based attitude correction" and real-time magnetic data analysis, enabling autonomous path planning for drones to follow cable routes. "Vector magnetometers" provide instant directional feedback, achieving "smart navigation" during surveys. Additionally, small unmanned surface vessels (USVs) were deployed to synchronize aerial magnetic data with a "3D submarine cable routing database", ensuring precision across complex environments.The team further improved accuracy by combining gyroscope-based attitude correction with real-time magnetic data analysis...

This press release is issued by King Newswire