发明名称 |
Method for reverberation suppression |
摘要 |
A method for reducing the effects of reverberation on noisy seismic wavefields recorded from within a moisture-laden environment. The wavefield manifests itself as a pressure signature and a velocity signature that contains an embedded nose signature. The pressure signature is adaptively filtered and subtractively combined with the velocity signature to isolate a nearly pure noise signature. The nearly pure noise signature is added back to the original velocity signature with opposite sign to clear away the embedded noise, leaving a refined velocity signature. The refined velocity signature iteratively is scaled and summed with the pressure signature, incrementing the scale factor at each iteration and autocorrelating the sum. A coefficient of convergence is calculated after each summation. The coefficient of convergence that most closely approaches unity identifies the preferred scale factor.
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申请公布号 |
US5365492(A) |
申请公布日期 |
1994.11.15 |
申请号 |
US19930101949 |
申请日期 |
1993.08.04 |
申请人 |
WESTERN ATLAS INTERNATIONAL, INC. |
发明人 |
DRAGOSET, JR., WILLIAM H. |
分类号 |
G01V1/28;G01P3/42;G01S7/527;G01S7/536;G01V1/36;G01V1/38;G06F17/00;G10K11/178;(IPC1-7):G01V1/38 |
主分类号 |
G01V1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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