论文部分内容阅读
本文结合二维随机场函数z(x,y)及其统计特征、平稳性和各态遍历性的概念,导出了二维Wiener滤波器的两个波数响应H_(opt)(u,v)和(u,v),并详细地讨论了导出它们的条件。为了正确地应用Wiener滤波技术,我们提供了检验物探观测数据的平稳性和各态遍历性的简单而适用的方法。最后还指出,当应用Wiener滤波的不相关技术时,将在区域异常的谱函数中引入一个非线性畸变因子,这个区域异常是从具有局部干扰的观测数据中提取的。于是,所提取的区域异常必然会产生某种程度的失真。
Based on the concept of two-dimensional random field function z (x, y) and its statistical characteristics, stationary and ergodic ergodicity, the two wavenumber responses H opt (u, v) and (u, v) and discusses in detail the conditions for deriving them. In order to apply the Wiener filtering technique properly, we provide a simple and applicable method to verify the stability and ergodicity of geophysical observations. Finally, it is also pointed out that when the irrelevant technique of Wiener filtering is applied, a nonlinear distortion factor will be introduced into the spectral anomalies in the region, which is extracted from the observed data with local interference. As a result, the extracted area is bound to have some degree of distortion.