Source structure design of space magnetic beacon positioning system

被引：0
|
作者：
Wang R. [1 ]
Yang B. [1 ]
Zhao Z. [1 ]
Guan H. [1 ]
机构：
[1] School of Information and Navigation, Air Force Engineering University, Xi'an
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2020年 / 41卷 / 04期
关键词：
Finite element analysis; Magnetic beacon; Magnetic positioning system; Optimization design;
D O I：
10.19650/j.cnki.cjsi.J2005983
中图分类号：
学科分类号：
摘要：
The sources of the magnetic beacon navigation and positioning system mainly include the permanent magnetic beacon and the energized solenoid magnetic beacon. Based on Biot-Savart's theorem, a permanent magnet scheme with the tapered combination structure and the plane cross combination structure is proposed. The magnetic beacon design scheme is compared with the existing single permanent magnet beacon and the orthogonal permanent magnet beacon. The magnetic field signal performance of the conical combination structure magnetic beacon is best when the angle between two planes is 70°. And the directivity of the signal in the two-dimensional plane can be significantly improved. The plane cross-combined beacon with a magnet angle of 60° is designed to address the issue of the existing signal beacons and increase the signal transmission distance. The magnetic field performance generated by the unidirectional combined beacon and the binary array combined beacon is analyzed for the plane crossing combined rotating magnetic beacon. Simulation results show that the magnetic field signal generated by array beacons is robust in the propagation media with different attributes. NdFeB permanent magnet material is used to build a signal detection and analysis system. When the baseline is 5 m and the beacon rotation angle difference is 0, the maximum errors produced by the two beacon layout methods are 3.55 nT and 5.80 nT, respectively. It proves that the proposed magnetic beacon design has practical value. The standard structure provides an effective solution to the problems of limited signal transmission distance and difficult signal extraction of the magnetic navigation positioning system. © 2020, Science Press. All right reserved.
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页码：102 / 110
页数：8
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