井下发射线圈倾斜状态的磁感应透地定位方法  

Through-the-earth positioning method for the tilted down-hole transmitting coil

作　　者：王羿帆 杨维[1] 田文龙 WANG Yifan;YANG Wei;TIAN Wenlong(School of Electronics and Information Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《华中科技大学学报（自然科学版）》2024年第9期45-54,共10页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(62071032)。

摘　　要：研究了井下发射线圈倾斜时的磁感应透地定位方法.首先对定位坐标系的建立方法和接收机的最优摆放位置进行分析以降低定位过程的复杂度.然后建立一种由一个地下发射线圈和三个地上三轴正交接收线圈组成的透地定位系统模型.井下发射线圈产生倾斜时定位信号与收发机位置间的对应关系会被破坏,从而影响定位结果.利用坐标转换原理建立与倾斜后井下发射线圈位姿相对应的新坐标系,并在其中重构出定位信号与收发机位置间的对应关系.最后根据此关系计算出井下发射线圈的倾斜状态和其在地理坐标系中的实际位置.仿真结果表明:系统对倾斜角度的求解精度为1°,定位精度为1 m.The magnetic induction(MI) based through-the-earth(TTE) positioning method was studied when the down-hole transmitter coil was tilted.Firstly,the establishment method of the positioning coordinate system and the optimal placement of the receivers were analyzed to reduce the complexity of the positioning process.Then a TTE positioning system model consisting of a down-hole transmitting coil and three three-axis orthogonal receiving coils on the ground was established.When the down-hole transmitter coil is tilted,the correspondence between the positioning signal and the transceiver position will be destroyed,thus affecting the positioning results.Based on the principle of coordinate transformation,a new coordinate system corresponding to the tilted attitude of the down-hole transmitter coil was established,and the corresponding relationship between the positioning signal and the position of the transceiver was reconstructed in this coordinate system.Using the corresponding relationship,the tilt state and the position of the down-hole transmitter in the geographic coordinate system can be calculated.The simulation result shows that the angle solution accuracy of the system is 1°,and the positioning accuracy is 1 m.

关 键 词：透地定位 磁感应 井下发射线圈倾斜 信号方向 坐标系 

分 类 号：TD65.5[矿业工程—矿山机电]