sanxiang nibianqi

现有一个信号：x(n)=1+cos(π*n/4)+ cos(2*π*n/3)设计及各种数字滤波器以达下列目的： 低通滤波器，滤除cos(2*π*n/3) 的成分，即想保留的成分为1+cos(π*n/4) 高通滤波器，滤除1+cos(π*n/4) 的成分，即想保留的成分为cos(2*π*n/3) 带通滤波器，滤除1+cos(2*π*n/3) 的成分，即想保留的成分为cos(π*n/4) 带阻滤波器，滤除cos(π*n/4) 的成分，即想保留的成分为1+cos(2*π*n/3) 1. 用MATLAB命令butterord求除滤波器的阶数,用命令butter设计各滤波器；画出滤波器幅度和相频相应 取各滤波器的系统函数H(z)。 (an existing signal : x (n) = a cos (* n/4) cos (2** n/3) design and digital filter to achieve the following objectives : low-pass filter, filter cos (2** n/3) the ingredients that want to retain an element of a cos (* n/4) high-pass filter, a filter cos (* n/4) components, namely to retain the element of cos (2** n/3) band-pass filter , a filter cos (2** n/3) components, namely to retain the element of cos (* n/4) band stop filter, the filter cos (* n/4) components, namely to retain the ingredients for a cos ( 2** n/3) 1. MATLAB order butterord except for the band Filter, using the order of the filter design butter; paint Filter magnitude and phase frequency of the corresponding filter system function H (z).)

paper about Identification of a Reduced Order Wind Turbine Transfer Function from the Turbine’s Step Response

地震勘探动校正程序，地震勘探中的常规处理(NMO code for seismic exploration, conventional processing in seismic exploration.)

说明：  用Matlab实现的隐蔽马尔可夫模型（Hidden Markov Model:HMM)(Hidden Markov Model(HMM) with matlab)

说明：  电力系统最优潮流程序，可以应用于电力市场下的最优潮流计算。适合电力系统专业的同仁使用(optimal power flow procedure can be applied to the electricity market under the optimal power flow calculation. Power systems for the professional colleagues use)

遗传算法的优化计算，建模自变量降维，matlab经典算法(Genetic Algorithm optimization, modeling arguments dimensionality reduction, matlab classical algorithm)

说明：  利用矩量法求解hallen方程和伯克林顿方程，得到电流分布的matlab程序。(The use of moment method for solving equations and Peter Clinton Hallen equation, the current distribution of the matlab program.)

MATLAB信号处理仿真包括PDF版本和代码(MATLAB signal processing simulation including PDF version and the code)

neural network trained with extended kalman filter

说明：  数字通信系统的matlab仿真，详细介绍了数字通信系统的各种原理及源码(Matlab simulation of digital communication systems, digital communication system described in detail the various principles and source)