An Adaptive Over / Under Data Combination Method

In this paper, we propose an adaptive over/under data combination method, which is one of the “dephase and sum” algorithms. The traditional “dephase and sum” algorithms adopt simple modeling of the ghost by assuming calm sea-surface reflection coefficients, which is invalid in rough sea conditions. In the proposed method, the amplitude spectrum of the ghost operator corresponding to each trace is estimated from the data adaptively. After that, the data combinations are implemented using the estimated ghost operators. A real dataset is used to demonstrate the performance of our method.