Image-with-PCA

说明：  这是用matlab语言编写的数据处理的小程序，很好用的(using Matlab is the language of small data processing procedures, with the good)

power_twelvepulses.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_twelvepulses.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

matlab高级讲义，其中包括各个实用例子的编程代码(matlab senior notes, including various practical examples of programming code)

使用MATLAB 实现得仅有一半存储量的DDS。(MATLAB to achieve half of the storage capacity of DDS)

1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。 a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化， 而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使 得阻带衰减减小，但能够减小过渡带。 b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽 度变化、主瓣副瓣比值变化情况。 2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI, 阻带衰减不小于 40dB,通带衰减不大于 3dB. a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否 满足要求，二者有什么不同。 b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型 (hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变 化。 3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。 4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率 ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter. For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter. In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter Transition bandwidth.)

对通信信号进行时频分析比较有用的matlab代码(A useful matlab code for time-frequency analysis of communication signals)

代码详细实现了信号和图像的模极大值重构的 S.mallat 交替投影算法，该方法具有收敛速度快、精度高的特点。(The code depicts the modulus maxima recovery of signal and image based on the S.Mallat s alternate projection algorithm. The algorithm has fast convergence and high accuracy. )

一种基于瞬时无功功率p-q算法的无功电流检测的simulnk仿真(A reactive power P-Q algorithm based on the instantaneous reactive current detection of SIMULNK simulation)

MATLAB5.X入门与提高.pdf 想学习MATLAB编程的入门书籍，可以参考(Introduction and improvement of MATLAB5.X PDF want to learn MATLAB programming entry books, can refer to )

对超宽带定位的基本原理进行了探讨，重点讨论了经典算法中的非迭代算法和迭代算法，对其优缺点进行了对比分析，并以实例说明了超宽带定位技术的优良性能。(UWB positioning on the basic principle is discussed, focusing on the classical algorithm of non-iterative algorithm and the iterative algorithm, its advantages and disadvantages are compared, and to locate examples of the ultra-wideband technology for excellent performance.)