Research on MGT target location method based on rotating combined magnetic beacon

Run Wang, Binfeng Yang, Zhen Zhao and Hua Guan

Journal of Electromagnetic Waves and Applications, 2021, vol. 35, issue 8, 1072-1087

Abstract: Based on the MGT positioning method, the performance of combined magnetic beacon is studied. The unit size of beacon is designed as D = 2 cm and L = 8 cm, the performance of different structure magnetic beacons combined have been studied and compared in detail, results show that the magnetic field intensity of cross structure is about 30000nT higher than the orthogonal structure which have generated sine waves. According to the TLS to filter the signal based on the regular tetrahedral gradient tensor measurement array. In the laboratory environment (Bearth=46157nT) to validate the model in this paper, the experimental results show that the array of two identical cross-combined permanent magnets will increase the magnetic induction value at the same distance by 1.7 times and the max-average positioning error on the 6 experimental paths is 1.52m. The implications of these findings particularly regarding the array rotation combined magnetic beacon may be useful for the high-precision magnetic position systems.

Date: 2021
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DOI: 10.1080/09205071.2020.1870050

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