pso

针对频率周期振荡的振动系统讨论自适应控制问题,在频率跟踪的基础上对频率变化的振动响应进行控 制,给出相应的估计、滤波与控制方法。首先在子空间辨识原理的基础上,通过测量信号自相关序列的递推运算获得信号 频率 然后根据估计频率实时调整带通滤波器的中心频率,使其跟踪信号频率,实现信号分量的跟踪滤波 最后在LMS方 法的基础上构造对信号分量进行控制的自适应控制器。(The adaptive vibration control of systems excited by forces of periodically varying frequencieswas dis- cussed. The presented adaptive controlwas realized on the basis of tracking of time-varying frequencies and amethod for online frequency estimation, filtering and controlwas proposed. Based on the principle of subspace identification, the time-varying frequencieswere estimated from the recursively computed autocorrelation ofmeasured signals. )

generates a fading signal where a direct (LOS) component is present Rician channel

采用Hamming窗实现的低通滤波器，可设置通带频率、截止频率以及带宽等滤波器特性参数。(The low-pass filter is realized by using Hamming window, can set the passband filter characteristic parameters such as frequency, the cut-off frequency and bandwidth.)

image segmentation in multiobjects

This a two dimensional level set code where the interface grows with normal speed equal -curvature. The code generates a movie showing the interface motion with and explicit first order in time algorithm with center differencing in space.

this file is QPSK using simulink..

关键的3G技术cofdm的相关程序代码，运行效果不错欢迎大家积极下载(key 3G technology cofdm the relevant code, the operating results good to welcome you actively download)

最小模法估计DOA,并求出估计角，这是一种传统的DOA估计方法。(Minimum norm method to estimate the DOA, and find the estimated angle, which is a traditional method of DOA estimation.)

一种差分进化算法的变体，收敛性能及其优秀，大家可以参考(a variant based on differential evolution algorithm,which has a better convergence performance.)

计算LYAPUNOV指数 计算LYAPUNOV指数 计算LYAPUNOV指数(LYAPUNOV index calculated LYAPUNOV Index Index LYAPUNOV)