时频分析（STFT）对线性调频信号进行时变滤波

对智能算法发展的研究与展望的一个综述，是听过查阅文献，写的一篇文章，跟大家分享一下(Research on the development of intelligent algorithms, a review and prospect, listening to literature review, write an article to share with you)

说明：  频域的模态参数识别方法之一，可以对振动信号进行分析处理，得出结构的固有频率，阻尼比，振型系数，方法很好，程序完整，(Frequency-domain modal parameter identification methods that can analyze the vibration signal processing, draw the structure of natural frequencies, damping ratio, mode shape coefficient, very good method, program integrity,)

信息论基础，描述了香农定理，熵的概念以及计算方法(Elements.of.Information.Theory.Jul.2006)

this code very good for PPCASOM

说明：  Melvin所著的对于STAP（空时自适应信号处理）领域的概述文章，对了解STAP有很大帮助。(Melvin book of the STAP (space-time adaptive signal processing) an overview of the field of articles of great help in understanding the STAP.)

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

说明：  基于遗传算法的评价函数（UUV）PID参数的遗传优化(Underwater Unmaned vecile)

pitch esimation material

说明：  用matlab编的天线方向图的一个程序，能够实现均匀线阵下的方向图，还有一个music算法的实现程序(Use of matlab antenna for a procedure, can be achieved under the uniform linear array pattern, as well as the realization of a music program algorithm)

小波包分析提取振动信号中的特征频率，可以广泛的应用于数据预测及数据分析,混沌的判断指标Lyapunov指数计算。( Wavelet packet analysis to extract vibration signal characteristic frequency, Can be widely used in data analysis and forecast data, Chaos indicator for Lyapunov index calculation.)