用边界元法进行潜艇空间磁场推算的试验检验

为了解和掌握潜艇空间磁场的分布，以研究潜艇的磁隐身性能，利用边界元法建立潜艇空间磁场推算的数学模型，设计试验测量得到用于建模的潜艇模型周围某包络面上的3分量磁场值，然后用3分量测磁仪测量得到艇模上方不同高度上的磁场数据。通过将测量值与边界元模型推算出的磁场值相比较，结果表明该模型稳定性较好，推算精度较高，能够较好反映潜艇空间磁场的分布，有一定的工程实用价值。

Verifying the Mathematics Model of Submarine Magnetic Field Extrapolation with Boundary Element Method Through Experiment

In order to master the submarine's magnetic field distribution in the air completely and exactly,and study the submarine's magnetic-concealed performance,the mathematics model of submarine's magnetic field extrapolation was built by using boundary element method.An experiment was designed to measure the magnetic field of three components on the envelope surface around the submarine model.The magnetic field of three components in different heights above the submarine model was obtained by using triaxial magnetometer.By comparing the metrical data with the extrapolated data,a conclusion is drawn that this model has good stability and high accuracy.This model could also reflect the submarine' magnetic field distribution in the air exactly,and has some value in practical engineering.