摘要
可控震源系统采用了相关技术,能有效地抑制随机噪声及环境噪声,提高信噪比;同时相关技术的应用造成了子波旁瓣的增大及频谱泄露,并产生吉伯斯现象,从而降低了勘探分辨率。通过余弦平方窗函数的应用,旁瓣得到了明显的抑制,但主瓣的宽度相应增大。
By adopting correlation technique in vibrator system, random noise and ambient noise are restrained,therefore signals to noise ratio are improved greatly. Despite the advantages of vibroseis correlation, wavelet sidelobes become wide and in Gibb＇ s phenomena its spectrum arises. Consequently the resolution is reduced. After a cosine-squared taper is applied, sidelobes can be significantly suppressed, at the same time, the bandwidth of the major lobe increases.
出处
《佛山科学技术学院学报（自然科学版）》
CAS
2009年第3期9-12,共4页
Journal of Foshan University(Natural Science Edition)
基金
中国科学院王宽诚博士后工作奖励基金资助项目(20050906100840)
关键词
可控震源
相关
子波
吉伯斯现象
抑制
vibroseis
correlation
wavelet
Gibb＇s phenomenon
suppression
