摘要
转换波噪声压制过程中由于有效波主频较低,且射线路径不对称,使接收的转换波资料干扰较多,信噪比较低,低频干扰的频带和有效波的频带重合,面波和一些低频的噪音干扰分布于全区,且能量较强,速度变化范围较大。本文针对K71地区转换波资料有效波主频较低、面波干扰强的特点,联合应用多种方法有效压制噪音。
In the process of suppressing the noise of the converted wave, the lower dominant frequency of effective wave and the asymmetry of ray path make the converted wave data with more noise and the SNR lower, and also the bands of the low frequency interference overlap with that of the primary wave, it makes the ground roll and low-frequency noise are distributed in the area, the energy is stronger and the range of the velocity contrast is great. Aimed at the converted wave data with lower dominant frequency of primary wave and stronger ground roll interference acquired from Shengli K71 area, the combination of various methods is used to suppress the noise.
出处
《油气地球物理》
2014年第4期10-12,共3页
Petroleum Geophysics
关键词
转换波
面波
噪音压制
K71地区
converted wave, ground roll, noise suppression and K71 area
