svm

说明：  基于双线性滞回模型的单自由度 弹塑性时程分析，并采用MATLAB编程实现(Single degree of freedom elastoplastic time history analysis using bilinear hysteretic model, MATLAB programming)

希尔伯特-黄变换的matlab代码，仅供参考(Hilbert-Huang Transform)

给定两个变量，计算自定义的数学方程的matlab GUI例子。(it takes input parameters(in the following order) when you call the gui, a system of equations file. Once the equation is called it will display each of them in their proper list boxes. )

自动保存文件，去开关压制起伏，并显示电离图(auto save)

说明：  共轭梯度法求最优值，这个程序是上课的时候做的，还行就发过来了(good)

现需要在高度为600~700KM范围内，回归周期为30天的太阳同步轨道上布置一颗L波段的合成孔径雷达卫星。 1. 请设计合适的轨道参数，并仿真对应轨道下一个运行周期内星下点轨迹图（纬度和经度两个图）； 2. 计算多普勒中心频率，多普勒调频率与纬度的关系图（设姿态角为0°，天线视角20°~60°，推荐35°）； 3. 按高斯投影方式，将星下点轨迹图投影到地图坐标上。(Now requires a height of 600 ~ 700KM range, return period of 30 days are arranged on a sun-synchronous orbit L-band Synthetic Aperture Radar satellites. 1 Please design the appropriate orbital parameters and simulate the corresponding orbit within the next operating cycle nadir trajectories (latitude and longitude two graphs) 2. Calculate the Doppler center frequency, Doppler frequency and the relationship between latitude Figure (set attitude angle is 0, the antenna angle of 20 to 60, recommended 35) 3 Press Gauss projection, the nadir trajectories projected onto the map coordinates.)

该文件主要介绍如何应用matlab对控制系统进行数学描述与建模(This document describes how to use the control system matlab mathematical description and modeling)

passive tracking algorithm

BPSK的想干解调，并画出误码率与理论曲线比较(BPSK demodulation of the wanted to do, and draw the bit error rate compared with the theoretical curve)

说明：  长期演进链路级仿真：采取更低复杂度的算法，而且它是基于长期演进系统级仿真的基础上发展起来。(LTE abstracts the Physical layer for lower complexity and is based on the experience built on the LTE System Level simulator.)