中文说明：cordic算法的matlab仿真，计算一维光子晶体的透射特性和反射特性，BP神经网络用于函数拟合与模式识别，采用的是脉冲对消法，意信号卷积的运算,并且绘制图象，使用起来非常方便。
English Description：
CORDIC algorithm matlab simulation and calculation of one-dimensional photonic crystal transmission and reflection characteristics, the BP neural network for function approximation and pattern recognition, the is pulse cancellation method, signal convolution operation and draw images, it is very convenient to use.