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本文提出应用一对模拟函数对直流电测深逆滤波系数在微机上进行优化的一种简单方法,并给出了程序框图。本文也给出了对一组采样间隔为(1/3)ln10和一组采样间隔为(1/4)ln10的两组逆滤波系数的优化结果。为了检验优化后的效果,计算了二层断面的ρ_α理论曲线值做为一个标准以兹比较。同时应用数字滤波法算出相应的二层理论曲线层参数优化前后的ρ_α值,再把这两种数值和标准值进行比较分别求出各点的相对误差进行分析以观察优化的效果。优化后的效果是明显的,其相对误差不仅大幅度下降而且趋于平缓,因而更宜于在微机上对直流电测深曲线进行处理。
In this paper, we propose a simple method of using a pair of analog functions to optimize the inverse filter coefficients of DC in-depth sounding and provide the block diagram. This paper also gives the optimal results for two sets of inverse filter coefficients with a sampling interval (1/3) ln10 and a set of sampling intervals (1/4) ln10. In order to test the effect after optimization, the ρ_α theoretical curve of two-layer section was calculated as a standard to compare. At the same time, the corresponding ρ_α values of the curve parameters of the two-layer theoretical curve were calculated by digital filter method. The two kinds of values were compared with the standard values to determine the relative error of each point to analyze the effect of optimization. The optimized effect is obvious, the relative error is not only decreased sharply but also tends to be gentle, so it is more suitable to deal with the DC sounding curve on the microcomputer.