知道型点值和端点值，用双三次曲线分别计算每一段表达式，并画出图-Matlab know type of point and endpoint value, using cubic spline curve to calculate each expression, and draw a diagram

版块是用香浓定理来述说扩频通信时传播原理。并用MATLAB的编程软件去建立一个直接扩频的仿真模型的，在排除其他因素的情况下可以观察曲线和动态图去分析直接扩频的可靠程度-Section in aromatic theorem is used to declare the spread spectrum communication transmission principle. With MATLAB programming software to build a simulation model

模式分类中基于BP神经网络的曲线拟合；根据BP神经网络的模型，调用MATLAB工具箱函数，通过对样本数据进行训练，对测试样本数据进行成功的预测，预测的输出值与实际值之间几乎没有偏差。-Pattern classification of curve fitting based on BP neural network Based on BP neural network model, call MATLAB toolbox function, through the training sampl