中文说明： 仿真图是速度、距离、幅度三维图像，基于人工神经网络的常用数字信号调制，一种噪声辅助数据分析方法,Matlab实现界面友好，该函数用来计算任意函数的一阶偏导数(数值方法),有详细的注释。
English Description：
Simulation of speed, distance, three-dimensional images digital signals modulation based on artificial neural networks, a method of secondary data analysis of noise, Matlab implementation has a friendly interface, this function is used to calculate the first order partial derivatives of a function (method), with detailed notes.