中文说明：all_forward=forward_stagger(v,kt,deltt,f0,t0,z0,dx)v表示速度模型矩阵 程序中nx,nz为纵向和横向点数kt记录时间长度deltt为时间间隔f0震源主频 选用的震源为雷克子波的导数t0为震源延迟激发的时间 z0为震源激发点的纵向坐标点dx为空间采样间隔 all_forward为记录的每个时刻模型振动的整个波场
English Description：
All_forward=forward_stagger (v,KT,deltt,F0,t0,Z0,DX) v speed matrix program NX,NZ for vertical and horizontal points KT deltt recording time length for the time interval focal frequency F0 source for leikezibo derivative of T0 is selected as source the delay inspired Z0 DX as a source for the vertical coordinates for spatial sampling interval &Nbsp;all_forward to record every moment of shaking the entire wave field