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

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