( 3 ) the symplectic integrator method is applied to time evolution of the scalar wave equation ( 3 )将辛算法运用到标量波动方程的时域模拟中。
4.
The standard parabolic equation method was obtained by the decompocition of the scalar wave equation and the expansion of the pseudo - differential operator 通过对传统波动方程的分解和伪微分算子的近似展开,获得了标准抛物线方程。