face-recognized

fft，本代码主要介绍fft的主要步骤，非常简单有很明了，非常适合阅读 (FFT, the code describes the main steps of FFT are very clear, very simple, very suitable for reading)

常规DOA谱估计music算法在多径环境下失效，SVD算法利用最大特征值对应的特征矢量重新构造奇异值矩阵，可以成功估计相干信号。(Conventional music spectrum estimation algorithm for DOA in multipath environment, failure, SVD algorithm using the maximum eigenvalue of the feature vector corresponding to re-construct singular value matrix, can be successfully estimated coherent signal.)

说明：  一本关于卡尔曼滤波器的英文文章的翻译版本，介绍的很详细具体，而且是翻译版本，读起来很方便。(A Kalman filter on the translation of the English version of the article, described a very detailed and specific, but also translation, easy read.)

In telecommunications, direct-sequence spread spectrum (DSSS) is a modulation technique. As with other spread spectrum technologies, the transmitted signal takes up more bandwidth than the information signal that modulates the carrier or broadcast frequency. The name spread spectrum comes from the fact that the carrier signals occur over the full bandwidth (spectrum) of a device s transmitting frequency.

matlab 电能质量 电能质量扰动干扰检查 电压骤降 小波变换 仿真模型(matlab power quality power quality disturbances the interference check the voltage sag wavelet transform simulation model)

说明：  这是一本适合初学者学习的书，书中均为MATLAB软件M文件程序，同时程序名与例题名序号相对应。(This is a book for beginners to learn the book are the MATLAB software, M documentation procedures, while procedures for name and serial number corresponds to Example name.)

DVB_S2_LDPC整体累积编码算法文档及MATLAB仿真(DVB_S2_LDPC overall cumulative encoding algorithm documents and MATLAB simulation)

说明：  自编多尺度样本熵程序，实例中用于一段轴承故障数据，简单易懂。MultiscaleSampleEntropy函数中的SampleEntropy也可以单独拎出来计算单个样本熵。(Multi scale sample entropy is used for a section of bearing fault data, which is easy to understand. SampleEntropy in the MultiscaleSampleEntropy function can also be picked up separately to calculate the entropy of a single sample.)

This function obtains a unitary matrix Q such that: d=diag(Q *diag(lmd)*Q). In other words, it gives a way to generate a matrix with given eigenvalues and diagonal elements. By Daniel Perez Palomar (last revision: May 10, 2004). Feel free to distribute this file as it is (without including any modifications).(This function obtains a unitary matrix Q such that: d=diag(Q*diag(lmd)*Q). In other words, it gives a way to generate a matrix with given eigenvalues and diagonal elements. By Daniel Perez Palomar (last revision: May 10, 2004). Feel free to distribute this file as it is (without including any modifications).)

通信原理的matlab仿真实验四进制的相位调制(Communication principle of matlab simulation quaternary phase modulation)