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在对转换点轨迹方程作二阶近似的基础上,导出了转换波DMO的椭圆近似方程,并在f-k域实现了转换波DMO的快速算法.该方法能同时完成共转换点(CCP)的水平位置校正.文中对转换波DMO的脉冲响应作了计算对比,证明方法是可靠的,其快速算法具有很高的实用性.
Based on the second-order approximation of the transition point trajectory equation, the elliptic approximation equation of converted DMO is deduced and a fast algorithm of converting DMO is implemented in fk domain. This method can accomplish the simultaneous conversion point (CCP) level The position correction.The paper compares and calculates the impulse response of converted wave DMO and proves that the method is reliable and the fast algorithm has high practicability.