摘要
稳定性控制一直是反Q滤波技术中最为关键的问题之一,其性能的优劣将决定反Q滤波的补偿效果和分辨率提高程度.本文在前人研究基础上,提出了二次函数法、三角函数法2种新的稳定性控制方法,并利用理论合成数据模型与已有的稳定因子法稳定性控制方法进行了对比,分析结果表明:3种稳定性控制方法均可以有效增强反Q滤波过程中的稳定性.但稳定因子法深层振幅恢复较弱,深层分辨率提高有限;而新方法具有更强的振幅恢复效果,频带可拓宽10 Hz以上,深层分辨率改善明显.
Stability control has been one of the most critical issues of inverse Q filtering technique. Not only the compensation effect of inverse Q filtering, but also the improvement of seismic data resolution depends on the effect of stability control. On the basis of previous research,we put forward two new methods of stability control. The first is the quadratic function method,and the other is the anti-trigonometric function method. By using a synthetic data model,the two new methods are compared to the existing stable factor method. The analysis result shows that all of the three stability control methods can effectively enhance the stability of inverse Q filtering. However,the stable factor method has little effect on amplitude recovery of the deep layer of seismic data.Although it can help to enhance data resolution of the deep layer,but the degree is very limited. On the contrary,the two other methods proposed can have a better effect on amplitude recovery and broaden the effective frequency band by at least 10 Hz. The data resolution of deep layer also receives a significant promotion.
出处
《地球物理学进展》
CSCD
北大核心
2016年第4期1608-1613,共6页
Progress in Geophysics
基金
黑龙江省教育厅科学技术研究项目(12531069)资助
关键词
反Q滤波
稳定性控制
二次函数法
三角函数法
分辨率
inverse Q filtering
stability control
quadratic function method
trigonometric function method
resolution
