vmd-verify3

matlab的经典案例，小程序，适用于初学matlab的同学(matlab classic cases for student who are learning matlab)

时频分析 时频分析方法提供了时间域与频率域的联合分布信息，清楚地描述了信号频率随时间变化的关系。(Joint Time-Frequency Analysis)

利用Matlab实现矢量量化LBGVQ算法，(failed to translate)

FFT和Hilbert变换工具包，但是和MATLAB相比要慢些(FFT and Hilbert transform tool kits, and MATLAB slower than some)

该程序用于整列信号处理的谱估计的谱峰搜索，如MUISC算法(The program for the entire column signal processing spectral estimation spectrum peak search, such as MUISC algorithm)

可以简单的绘制国旗，基本的绘制国旗的程序，适用于初学者(Can simply draw the national flag, the flag of the basic procedures for the drawing for beginners)

一个扩频发射接收机的matlab仿真程序，用匹配滤波器的方法同步 (fired a spread spectrum receiver Matlab simulation program, with the matched filter synchronization method)

A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images.

the attached files is my thesis scratch

根据海伦方程得出的结论，数值模拟得到E面方向图，三维方向图等(According to the conclusions of Helen equations, numerical simulation to get the E-plane pattern, three-dimensional pattern, etc.)