论文部分内容阅读
地震记录道 x(t)的褶积模型,假设其功率谱为S(f)=S_P(f)S_R(f) (1)其中 S_P(f)是地震脉冲的傅里叶变换的平方值,S_R(f)是反射序列功率谱。子波提取的通用方法是量测若干相邻记录道平均值的地震数据的平滑周期图,并且使产生的谱估计与脉冲的谱相等。这个方法的效果取决于两个条件的满足:(1)得到较好质量的地震谱估算值;(2)反射序列谱是白色的。本文的目的是为了确定这些条件在常用的地质范围内是否能获得满足。根据平滑周
The convolution model of seismic trace x (t) is assumed to have a power spectrum of S (f) = S_P (f) S_R (f) where S_P (f) is the square of the Fourier transform of the seismic pulse, S_R (f) is the reflected sequence power spectrum. A common method of wavelet extraction is to smooth the periodic pattern of seismic data measuring the average of several adjacent tracks and to equalize the resulting spectral estimate with the spectrum of the pulse. The effect of this method depends on the fulfillment of two conditions: (1) a good quality estimate of the seismic spectrum is obtained; (2) the reflected sequence spectrum is white. The purpose of this paper is to determine whether these conditions are met within the usual geological range. According to smooth week