SipListener

ASK,QPSK,FSK,MSK等通信中经典的调制程序，用matlab编写，非常适合通信领域专业参考(ASK, QPSK, FSK, MSK modulation and other communications in the classic procedure, using matlab prepared, very professional reference for communication)

关于复杂网络社团结构的相关程序，其中包括求节点间最短距离，求边介数等等。(There are some procedures about community structure of comlex network which includes the shortest distance between nodes and betweeness and so on.)

PMU volt using matlab/psat

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.

ISAR成像RD算法，设定目标点数为74时的仿真程序(RD SAR imaging algorithm, set a target of 74 points when the simulation program)

说明：  对地震计录进行fk滤波，适用于初学者，可以下载学习(fk filter,FK filtering for seismometer recording is suitable for beginners and can be downloaded for learning)

此程序为S变换源代码，用于matlab软件环境下。st.m(S transform)

1.分别在两个图中画出δ(n)和δ(n-2)，其中-10≤n≤10，画出U（n）其中-10≤n≤10。 2.分别在两个图中画出x1(n)=cos(2π×20×0.01×n)，0≤n≤10和x2(n)=(0.8)n，1≤n≤6。 3.由上一题，计算y(n)=x1(n)+x2(n)，并画图。(1. Draw the figure at two δ (n) and δ (n-2), where-10 ≤ n ≤ 10, draw the U (n) where-10 ≤ n ≤ 10. 2. Respectively in the two Draw the figure x1 (n) = cos (2π × 20 × 0.01 × n), 0 ≤ n ≤ 10 and x2 (n) = (0.8) n, 1 ≤ n ≤ 6. 3. from the previous question, calculate y (n) = x1 (n)+ x2 (n), and drawing.)

matlab中值滤波源代码，对于图像处理的人员有一定的参考意义。。(median filter matlab source code for image processing personnel have some reference value. .)

说明：  基于LQR和PID的倒立摆小车控制，希望有需要的人能用到(Based on the control of the inverted pendulum trolley based on LQR and PID, I hope that those in need can use it)