论文部分内容阅读
本文研究了基于偏斜度准则的常相位旋转地震子波估计方法的优势,并分析了偏斜度准则与峰度准则的差异性及其适用条件.主要通过数值模拟试验充分说明偏斜度准则相对于峰度准则具有更高的动态范围及稳定性.偏斜度准则克服了分析信号带宽必须大于中心频率的条件,降低了反射系数对于子波相位估计的影响.相对于峰度准则,偏斜度准则在处理低信噪比的地震资料过程中表现出了更好的稳定性和准确性.通过蒙特卡洛试验进一步说明基于偏斜度准则的常相位子波估计能够准确地估计出相位为常数的地震子波,并且子波相位估计结果对地震资料噪声水平的强弱不敏感.
In this paper, the advantages of the method based on skewness criterion for normal-phase rotation seismic wavelet estimation are studied, and the difference between skewness criterion and kurtosis criterion and their application conditions are analyzed. The skewness criterion Relative to the kurtosis criterion has a higher dynamic range and stability.Skegness criterion to overcome the analysis of the signal bandwidth must be greater than the center frequency of the condition, reducing the reflection coefficient for the wavelet phase estimation.Compared with the kurtosis criterion, partial The slope criterion shows a better stability and accuracy in the processing of seismic data with low signal-to-noise ratio.The Monte Carlo experiment further shows that the phase-based wavelet estimation based on skewness criterion can accurately estimate the phase Is a constant seismic wavelet, and the result of wavelet phase estimation is not sensitive to the intensity of seismic data noise.