An adaptive over/under data combination method

The traditional ＂dephase and sum＂ algorithms for over/under data combination estimate the ghost operator by assuming a calm sea surface. However, the real sea surface is typically rough, which invalidates the calm sea surface assumption. Hence, the traditional ＂dephase and sum＂ algorithms might prod...

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Bibliographic Details
Published in:Applied geophysics 2013-12, Vol.10 (4), p.469-476
Main Authors: He, Jian-Wei, Lu, Wen-Kai, Li, Zhong-Xiao
Format: Article
Language:English
Subjects:
Algorithms
Data analysis
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Oceanic analysis
估计
恶劣海况
振幅谱
数据组合
海面
演示方法
组合使用
自适应
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Summary:The traditional ＂dephase and sum＂ algorithms for over/under data combination estimate the ghost operator by assuming a calm sea surface. However, the real sea surface is typically rough, which invalidates the calm sea surface assumption. Hence, the traditional ＂dephase and sum＂ algorithms might produce poor-quality results in rough sea conditions. We propose an adaptive over/under data combination method, which adaptively estimates the amplitude spectrum of the ghost operator from the over/under data, and then over/under data combinations are implemented using the estimated ghost operators. A synthetic single shot gather is used to verify the performance of the proposed method in rough sea surface conditions and a real triple over/under dataset demonstrates the method performance.
ISSN:1672-7975
1993-0658
DOI:10.1007/s11770-013-0397-x