CONCLUSION

A scheme for trace interpolation of CMP gathers was proposed. The interpolation was performed by finding the missing traces that minimize the output of applying a high-pass, recursive dip filter to the NMO-corrected gather. For optimization, we used a conjugate-gradient algorithm and found that it converged rapidly. Compared to sinc interpolation, which is equivalent to applying a high-cut filter in the frequency domain, the proposed method is superior for interpolating both truncated traces and random missing traces.