An Underwater Robot Positioning Method Based on EM-ELF Signals

Wang, Guan; Ding, Huanyu; Xia, Hongwei; Wang, Changhong

doi:10.1007/978-3-030-27538-9_55

Cited by 2 publications

(2 citation statements)

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“…The problem of dipole radiation in multilayered media was first introduced by Sommerfeld in 1909 [11]. Since then, this research area has witnessed substantial interest and notable achievements, finding applications in various engineering domains, including geophysical exploration [12], submarine communication [13], underwater navigation [14], and submarine detection and communication [15,16]. Much of the subsequent work builds Electronics 2023, 12, 4165 2 of 14 upon Sommerfeld's integral [11], which serves as the theoretical foundation for the propagation and scattering of EMW.…”

Section: Introductionmentioning

confidence: 99%

“…Electronics 2023, 12, 4165 2 of 14 notable achievements, finding applications in various engineering domains, including geophysical exploration [12], submarine communication [13], underwater navigation [14], and submarine detection and communication [15,16]. Much of the subsequent work builds upon Sommerfeld's integral [11], which serves as the theoretical foundation for the propagation and scattering of EMW.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Electromagnetic Fields of Extremely Low-Frequency Horizontal Electric Dipoles at Sea–Air Boundaries

Hu,

Xie,

2023

Electronics

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The technologies of undersea detection and communication, seabed sensor networks, and geophysical detection using electromagnetic waves have emerged as research focal points within the field of marine science and engineering. However, most studies have focused on the propagation of electromagnetic fields over long distances within the shallow “sea-seabed” environment. This paper introduces a quasi-static approximation method to address the Sommerfeld numerical integration challenge within the near-field region, employing the horizontal electric dipole (HED) as a model. It derives the Sommerfeld numerical integral expressions under conditions where the wave-number ratio at the “seawater-air” boundary does not adhere to the requirement of |k0/k1| << 1 (where subscripts 0 and 1 denote seawater and air media, respectively). Building upon this, the paper simplifies the Bessel-Fourier infinite integral term within the integral expression to obtain Sommerfeld numerical integral approximations for the propagation of electromagnetic fields in the near region of extremely low frequency (ELF) within seawater. The study further conducts simulations and calculations to determine amplitude variations in electromagnetic field intensity generated by an ELF HED at different frequencies, dipole heights, and observation point depths. It concludes with an analysis of electromagnetic field propagation characteristics at the seawater-air boundary. Experimental findings highlight the lateral wave as the primary mode of electromagnetic wave propagation at this interface.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Electromagnetic Fields of Extremely Low-Frequency Horizontal Electric Dipoles at Sea–Air Boundaries

Hu,

Xie,

2023

Electronics

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Positioning Systems for Unmanned Underwater Vehicles: A Comprehensive Review

Alexandris,

Papageorgas,

Piromalis

2024

Applied Sciences

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Positioning systems are integral to Unmanned Underwater Vehicle (UUV) operation, enabling precise navigation and control in complex underwater environments. This paper comprehensively reviews the key technologies employed for UUV positioning, including acoustic systems, inertial navigation, Doppler velocity logs, and GPS when near the surface. These systems are essential for seabed mapping, marine infrastructure inspection, and search and rescue operations. The review highlights recent technological advancements and examines the integration of these systems to enhance accuracy and operational efficiency. It also addresses ongoing challenges, such as communication constraints, environmental variability, and discrepancies between theoretical models and field applications. Future trends in positioning system development are discussed, with a focus on improving reliability and performance in diverse underwater conditions to support the expanding capabilities of UUVs across scientific, commercial, and rescue missions.

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An Underwater Robot Positioning Method Based on EM-ELF Signals

Cited by 2 publications

References 3 publications

Evaluation of Electromagnetic Fields of Extremely Low-Frequency Horizontal Electric Dipoles at Sea–Air Boundaries

Evaluation of Electromagnetic Fields of Extremely Low-Frequency Horizontal Electric Dipoles at Sea–Air Boundaries

Positioning Systems for Unmanned Underwater Vehicles: A Comprehensive Review

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