The Source Structure Design of the Rotating Magnetic Beacon Based on Phase-Shift Direction Finding System

Area of Science:

• Engineering
• Physics
• Geophysics

Background:

• Accurate magnetic orientation is crucial for navigation and positioning.
• Current magnetic beacons suffer from multi-valued periodic magnetic fields, limiting azimuth measurement accuracy.

Purpose of the Study:

• To design a novel magnetic source structure for a magnetic beacon.
• To overcome the limitations of existing magnetic beacons for azimuth measurement.

Main Methods:

• Proposed a multiple rotating permanent magnet array design.
• Optimized parameters including spacing (d), rotational speed (ω), and initial angle (φ).
• Validated the mathematical model using COMSOL simulations and experimental setup.

Main Results:

• A triple-structure magnetic beacon was designed with specific parameter configurations.
• The optimized design produced a unique, heart-shaped magnetic field pattern.
• Experimental results confirmed a unique maximum value and good directivity in the magnetic signal waveform.

Conclusions:

• The novel magnetic beacon structure effectively addresses the multi-valued issue of traditional beacons.
• The developed system demonstrates practical applicability for accurate azimuth measurement.
• This advancement enhances the precision of magnetic orientation systems.