Bessel_Butter_delay

很好用的matlab源代码，值得作为参考。源代码可以直接拿来应用。(can run smooth)

Optimal output feedback controller

Matlab Image processing ztransformLPF

the file contain estimmation for channel.

This file is a literature survey of password authentication

果蝇优化算法在pid寻优中的应用，这个方法很好(Drosophila optimization algorithm optimization of pid, this method is very good)

谱估计,包括自相关,协方差,修正协方差,burg法,另外还有MUSIC和ESPRIT法(Spectral estimation, including the auto-correlation, covariance, Covariance amended, burg method, as well as MUSIC and ESPRIT method)

1、经典粒子群算法 2、一次最小二乘法（LS） 3、递推最小二乘算法（RLS） 4、确定性系统的递推梯度校正参数估计（RGC） 5、递推极大似然参数估计算法（RML）(1、Classical particle swarm optimization algorithm matlab code 2、Various types of system identification algorithm)

Computes distance and bearing between points on the earth

均匀平面阵方向图，m*n元，波束指向phi=0°，theta=90°(Uniform plane array pattern, m* n element, the beam points to phi = 0 °, theta = 90 °)