航空磁探中使用边界元法的潜艇磁场建模

为解决航空磁异常探测中潜艇高空磁场分布难以测量的问题，根据Maxwell方程组和边界元法的基本原理，在预测空间基于格林函数，通过矢势分布求得潜艇空间磁场分布，建立潜艇磁场预测模型。使用磁偶极子仿真潜艇目标对预测模型进行初步理论验证，进一步设计实验对预测模型的有效性进行实际检验。根据理论和实验验证，结果表明，使用边界元法的潜艇磁场预测模型的平均绝对误差为0.220 5 nT，平均相对误差为2.368%。

Abstract

To solve the problem that the magnetic field distribution of submarine at high altitude is difficult to measure in aeromagnetic anomaly detection, the Maxwell equation set and the boundary elements method are taken into consideration. According to the Green function and the distribution of vector potential, the spatial distribution of magnetic field of submarine is obtained in the prediction space, and the prediction model of submarine magnetic field is established. By using the magnetic dipole to simulate the submarine target, the prediction model is validated preliminarily in theory. Further more, an experiment is designed to verify the effectiveness of the prediction model.The results of the theoretical test and experimental verification show that the mean absolute error and the mean relative error of the submarine magnetic field prediction model using boundary elements method are respectively 0.220 5 nT and 2.368%.

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周家新, 陈建勇, 单志超, 陈长康. 航空磁探中使用边界元法的潜艇磁场建模[J]. 电光与控制, 2018, 25(6): 31. ZHOU Jiaxin, CHEN Jianyong, SAN Zhichao, CHEN Changkang. Submarine Magnetic Field Modeling Using Boundary Elements Method for Aeromagnetic Anomaly Detection[J]. Electronics Optics & Control, 2018, 25(6): 31.

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