In the case of horizontal layered-medium model, we can express a discrete resistivity function as a form of convolution filtering, whose filtering coefficient can be calculated by using first order Bessel function.

• 在水平层状介质模型条件下,离散的电阻率函数可用一种褶积滤波形式表示,此滤波系数利用一阶贝塞尔函数求出。