Project4

smth apsk simulation program, including land-side, the originator, channel, as well a apsk modulation methods used for school data modulation

这是我在网上找的支持向量机的代码，应该比较普通(support vector machine )

在随机模拟和数据分析中，此matlab的源程序和使用(In the stochastic simulation and data analysis, and use this matlab source)

基于随机有限集的单目标以及多目标跟踪文章以及代码(RFS Multi-target tracking PHD Filter)

连续hopfield神经网络的优化思想用于求简单函数极值(the use of hopfield nerural network to achieve the minimum of a function)

多帧图像数据拟合，可以对多幅图片数据进行数据拟合。(Fitting multi-frame image data, image data can be multiple data fitting.)

A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system.(A new method for periodic scattering problems using 2nd kind boundary integral equations and the free-space Green s function, adding extra degrees of freedom on the unit cell walls, and imposing quasi-periodicity in an expanded linear system. This avoids the problems with the standard approach, namely: the quasi-periodic Green s function is slow to evaluate, it diverges at Wood s anomalies, and it does not handle large aspect ratios well. Our new approach cures all three issues, and can easily be `wrapped around an existing code (e.g. fast-multipole acceleration) for the isolated-obstacle scattering problem. It includes the latest talk slides: "A new integral representation for quasi-periodic scattering problems in two dimensions")

本章先分析说明伪谱法求解波动方程的算法原理，再给出弹性波场伪谱法数值模拟的改进算法；然后，通过直接引入P波波场变量和S波波场变量，给出可实现弹性波场的P波和S波分解的波动方程，并用伪谱法实现弹性波场的P波和S波分解的数值模拟；最后用伪谱法对井间地震的复杂波场作数值模拟，分析井间地震波场中各种波的传播规律。(In this chapter, the principle of pseudo-spectral method for solving wave equation is analyzed, and then an improved algorithm for numerical simulation of elastic wave field is given. Then, by directly introducing P-wave field variable and S-wave field variable, the wave equation which can realize P-wave and S-wave decomposition of elastic wave field is given, and the P-wave sum of elastic wave field is realized by pseudo-spectral method. Numerical simulation of S-wave decomposition; finally, pseudo-spectral method is used to simulate the complex cross-well seismic wave field and analyze the propagation law of various waves in cross-well seismic wave field.)

Script for computing the SNR improvement in Rayleigh fading channel with selection diversity

信号与系统matlab作业2，Discrete Fourier Transform，Filtering of Noisy Signals(Discrete Fourier Transform，Filtering of Noisy Signals)