自动追踪SVD压制线性干扰方法的改进

Improvement of suppressing linear interference by automatically tracing SVD

在压制线性干扰的常规去噪处理中,常常是对每一个计算区域或者计算样点都进行去噪处理,而没有考虑到该计算区域或者计算样点本身是否存在线性干扰,从而会造成有效信号的损失,影响去噪效果。本文以参考文献[1]提出的压制线性干扰的方法为基础,根据线性干扰相邻道相关性很强,而有效信号相邻道相关性较弱的特点,提出了一种判断计算样点是否存在线性干扰的协方差度量方法。该法根据某一样点不同方向求得的协方差度量值Cc的大小,判断某个方向是否进行去噪处理。通过模型试验和实际资料的试算表明:加了这种判断方法之后,不仅能更好提高有效信号保真度,而且能提高去噪效率。

In ordinary denoise processing of suppressing linear interference,the denoise processing is often carried out for each computational range or sample,without considering whether the linear interference existing in that computational range or sample,resulting in loss of useful signal and influencing on denoise effect.Based on the method of suppressing linear interference presented by the reference [1] and the character that the correlation of linear interference in adjacent traces is stronger and the correlat...