transform integrals meaning in English

变换积分
变换式积分

The moment method is used to calculate the rcs of three - dimensional targets in this paper . these targets include conducting targets , dielectric targets and coat targets . triangular patches are used to model the surface of the target , then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions . the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target . finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation . when obtain the equivalent electric current and magnetic current , we can calculate the scattering field and the rcs of the target
本文利用矩量法计算了三维导体目标、介质目标、涂层目标的雷达散射截面。首先采用三角形面元对物体表面几何形状进行模拟，然后建立满足边界条件的电场积分方程( efie )和磁场积分方程( mfie ) ，将物体表面的等效电磁流用rwg矢量基函数表示，最后利用伽略金法( rwg矢量基函数既作为基函数又作为检验函数)将电磁场积分方程转化为矩阵方程求解未知电磁流系数，得到了表面的等效电磁流后，可以计算散射场和目标的雷达散射截面。