Keywords Confocal version of CFP migration;Wave equation continuation;Fourier finite difference method;Relative amplitude-preserved processing;Bifocal version of CFP migration;CFP-AVP analysis;

• 共聚型CFP偏移;波动方程延拓;傅立叶有限差分;相对保幅处理;双聚型CFP偏移;CFP-AVP分析;