姿态变化与舰船异常感应磁信号的分布具有紧密相关性，为保障舰船行驶安全，研究姿态与舰船感应磁性间关系的建模分析方法。分别构建地磁坐标系、舰船坐标系与地理坐标系，分析3个坐标系间的转换关系；构建单椭球体和磁偶极子阵列混合模型仿真舰船感应磁场，利用磁传感器确定舰船在磁传感器区域的感应磁场值；根据舰船在地理坐标系下的感应磁强度与感应磁强度变化率分析舰船姿态。实验结果表明，该方法能够准确分析坐标系不同轴上的感应磁性数据，舰船姿态分析过程中俯仰角与磁航向角误差分别控制在±0.8°和±0.5°范围内。
There is a close correlation between the change of ship's attitude and the distribution of ship's abnormal magnetic induction signal. In order to ensure the safety of ship's driving, the modeling and analysis method of the relationship between ship's attitude and ship's magnetic induction is studied. The geomagnetic coordinate system, ship coordinate system and geographic coordinate system are constructed respectively, and the conversion relationship among the three coordinate systems is analyzed. A hybrid model of single ellipsoid and magnetic dipole array is constructed to simulate the ship's induced magnetic field, and the magnetic sensor is used to determine the ship's induced magnetic field value in the magnetic sensor area. The ship attitude is analyzed according to the induced magnetic intensity and the change rate of the induced magnetic intensity of the ship in the geographical coordinate system. The experimental results show that the method can accurately analyze the induced magnetic data on different axes of the coordinate system, and the pitch angle and magnetic heading angle errors are controlled within ± 0.8 ° and ± 0.5 ° respectively in the process of ship attitude analysis.
2023,45(5): 132-135 收稿日期：2022-09-16
DOI：10.3404/j.issn.1672-7649.2023.05.024
分类号：P229
基金项目：国家自然科学基金青年科学基金项目(51305290)；山西省高等学校教学改革创新项目(J20221219)；山西省教育科学“十四五”规划课题（GH-220227）
作者简介：刘会峰(1979-),女,博士,讲师,研究方向为电磁建模及求解
