转换波叠加技术要求真的共反射点道集,亦即真的共转换点(CCP)道集。这里,我们研究了PS和SP型转换波的水平层叠加。单一均匀层中的PS和SP型波的转换点的坐标可以通过偏移距、反射界面深度和速度比(Vp/Vs)的函数形式逐一地计算出来。知道了转换点,我们就能在共转换点(CCP)记录中形成地震道集。数字试验表明,多层介质中的CCP坐标也能 The converted-wave overlay technique requires a true co-reflection dot gathers, ie, true co-conversion point (CCP) gathers. Here, we study the horizontal stacking of PS and SP converted waves. The coordinates of the transition points of PS and SP waves in a single uniform layer can be calculated one by one as a function of offset, reflection interface depth and velocity ratio (Vp / Vs). Knowing the transition point, we can form the trace gather in the CCP records. Numerical experiments show that the CCP coordinates in multi-layer media are also valid