多姿态具磁性未爆弹磁异常快速正演

Magnetic Anomaly Fast Forwardmodeling of Magnetized Unexploded Ordnance with Different Shapes and Positions

摘要:

针对多姿态和形状各异的均匀磁化地下未爆弹（UXO)的磁正演问题，基于面磁荷积分原理，采用三角面元法和三次样条插值法，提出了一种高精度快速正演方法.该方法实现了有限长圆柱体和变径有限长圆柱体磁场的快速插值正演.结果表明:该方法与不使用插值的方法计算出的结果对比，误差较小.

关键词:磁异常; 正演; 面元法; 三次样条插值

Abstract:

Based on surface magnetic element integral theory, a fast highprecision magnetic forward method was proposed to solve the magnetic fast forwardmodeling of magnetized unexploded ordnance with different shapes and positions, by using triangular surface element method and spline interpolation method. The method realized the fast interpolation forward modeling of finitelength cylinder and variablediameter finitelength cylinder. It is shown that the error of the method is relatively small compared with that of noninterpolation method.

Key words:magnetic anomaly; forward modeling; surface element; spline interpolation