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我们建立了一个频率域的位场转换解释系统,由于可以利用褶积定理(空间域的褶积对应于频率域的乘积)的特点,在导出一系列位场转换的频率域滤波算子的基础上,不但可以实现各种单一的位场转换,而且可以很方便地进行综合的位场转换——将若干个频率域的滤波算子连乘(滤波器的串联),从而使这个解释系统具有多功能位场转换的特点,以适应解释的要求。此外,借助于快速富里叶变换的计算机算法,使这个系统在计算机上能省时而准确地实现计算。鉴于上述两方面的优越性,近几年来这个系统在重磁资料解释实践中,特别是在解释宽缓异常时,逐步地得到了推广使用。
We have established a system of interpretation of the field transition in the frequency domain. Since we can make use of the characteristics of the convolution theorem (the convolution of the spatial domain corresponds to the product of the frequency domain), we can derive a series of basis for the frequency domain filter operator , Not only can achieve a variety of single-bit field conversion, and can easily be integrated bit-field conversion - the number of frequency domain filter operator multiply (filter in series), so that this interpretation system has Multi-function field-shift characteristics to meet the requirements of interpretation. In addition, with the help of a fast Fourier transform computer algorithm, this system can be calculated on a computer in a timely and accurate manner. In view of the superiority of the above two aspects, in recent years this system has been popularized and popularized in the practice of gravity and magnetic data interpretation, especially in explaining moderating anomalies.