Non-Line-of-Sight Azimuth Transmission Technology Based on Polarization-Maintaining Fiber

A solenoid magnetic field plays an important role in a non-line-of-sight azimuth transmission system based on polarization-maintaining fiber, which is directly related to the transmission accuracy of azimuth information. This research mainly studies the factors that affect the solenoid magnetic field according to the modulation signal from the direct current to the alternating current, as well as the hollow solenoid. First, the magnetic field components of the static solenoid are derived from the Biot–Savart law by using the uniform cylindrical current equivalent model. Then, the magnetic field of the near axial region is studied from the axial and radial directions, and the feasibility of calculating the magnetic field of the multi-layer solenoid with the superposition principle is verified by measuring the magnetic field of each position on the axis of the solenoid with a Gauss meter. Finally, the alternating electromagnetic field model is established using Maxwell’s equations, and the magnetic and electric fields of the hollow solenoid are further solved. The results show that the magnetic field in the middle part of the magneto-optic glass is more stable, and the magnetic collecting ability of the solenoid is stronger. The magnetic field intensity at the center of the magneto-optic modulation solenoid of the system is the largest, and it decreases with the distance from the center. The alternating electromagnetic field is closely related to frequency. The results provide a reference for the study of the azimuth accuracy of a non-line-of-sight azimuth transmission system.

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Analysis of the influence of a solenoid magnetic field in the azimuth transmission system

Yang

Song

Cai

et al. 2021

Sci Rep

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方位传递系统中透镜参数对偏振传输的影响分析

Yang Zhiyong,

Li Shun,

Luo Lina

et al. 2023

光学学报

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Non-Line-of-Sight Azimuth Transmission Technology Based on Polarization-Maintaining Fiber

Cited by 2 publications

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Analysis of the influence of a solenoid magnetic field in the azimuth transmission system

Analysis of the influence of a solenoid magnetic field in the azimuth transmission system

方位传递系统中透镜参数对偏振传输的影响分析

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