发明名称 |
NON-STATIONARY FILTER DESIGN AND APPLICATION FOR PROCESSING OF SEISMIC SIGNALS |
摘要 |
A method of designing and applying filters for geophysical time series data comprising obtaining a plurality of spatially related geophysical time series and transforming the time series using a wavelet transformation (Fig. 6). The wavelet transformation coefficients (1-16) may be organized into a plurality of subband traces (Fig. 5). The method includes modifying one or more transform coefficients within a plurality of the subband traces or within all but one of the subbands of traces and then inverting the subband traces using an inverse transform to produce a filtered version of the transformed portion of the geophysical time series. The method allows for design and analysis of non-stationary filters (Fig. 4) and filter parameters in untransformed data space. Non-stationary signals may be filtered in all or in windowed portions of the geophysical time series data.
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申请公布号 |
WO02095449(A1) |
申请公布日期 |
2002.11.28 |
申请号 |
WO2002US15625 |
申请日期 |
2002.05.20 |
申请人 |
CONOCO INC. |
发明人 |
ANNO, PHIL, D. |
分类号 |
G01V1/36;(IPC1-7):G01V1/28 |
主分类号 |
G01V1/36 |
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