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本文分析了“匹配滤波”方法的应用条件及有效性。为了讨论方法的有效性,以棱柱体模型为基础,组成不同水平尺寸的块体以及磁性单界面和双界面模型,在频率域计算摸型场值,利用模型场的对数平均径向能谱曲线,采用“匹配滤波”方法计算块体顶深及界面平均深度,一系列结果表明,计算值与理论值相差较大。由此得出:在使用该方法时必须注意应用条件;注意水平尺寸因子和有限测区的截断影响以及连续界面分割为离散界面时出现的问题。
This paper analyzes the application conditions and effectiveness of “matched filtering” method. In order to discuss the validity of the method, based on the prism model, the blocks of different horizontal sizes and the magnetic single-interface and dual-interface models were constructed. The touch field values were calculated in the frequency domain. Using the logarithmic mean radial energy spectrum Curve, using the “matched filter” method to calculate the depth of the block and the average depth of the interface, a series of results show that the calculated value and the theoretical value of a large difference. It is concluded that the application of this method must pay attention to the application conditions; pay attention to the horizontal size factor and truncated impact of the limited test area and the problems that arise when the continuous interface is divided into discrete interfaces.