摘要
基于广义S变换将时间域叠前地震信号变换到时间-频率域,利用地震信号与噪音在时频域的差异,去除地震资料中的噪音,然后用广义S反变换到时间域,其结果就是去除噪音的有效地震信号。通过理论模型和实际应用表明,该方法能有效地压制不同时段、不同频率的噪音,并保持了地震记录的有效信息,同时还具有适应性强、应用效果好等特点。
Based on generalized S transform,a pre-stack seismic signal was transformed from the time domain to the time-frequency domain.It eliminated noise by using the difference between signal and noise in the time-frequency domain,then made use of generalized S transform to return it to the time domain,and obtained the resultant seismic signal which had less noise.It is indicated by the theoretical models and practice that this method could not only denoise effectly in different times and frequencies,but also keep the available information in the seismic record.At the same time it has the characteristics of good flexibility and great application effects.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第S2期177-180,126,共5页
Periodical of Ocean University of China
基金
中国高技术研究发展计划项目(2006AA09Z339
2006AA06A108)
山东省自然科学基金项目(Y2006E09)资助
关键词
广义S变换
去噪
时频分析
地震数据处理
generalized S transform
denoise
time-frequency anslysis
seismic data processing
