• 责任者：Shi Ying (Geosciences Institute ; Northeast Petroleum University ; Daqing 163318 ; China) ; Wang Jianmin
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2012
• 卷期：31(5)
• 关键词：叠前偏移 ; prestack migration ; 去噪 ; denoising
• 页码：p.154-157
• 图表：1 illus., 18 refs.
• 分类号：1600
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

The high-order finite difference algorithm is adopted to calculate the reverse time migration in this paper, and low-frequency noise suppressing approach by Laplace operator noise-eliminating filter is mainly focused. Comparing with the conventional high-pass filter approach, the reverse time migration (RTM) denoising test on Marmousi model shows that Laplace operator denoising approach can effectively suppress the low-frequency noise： not only preserve the properties of amplitudes and phases of those effective signals, but also obviously improve the imaging effects of the profiles.