cangku

此程序能将一个信号进行EMD分解，已近调试过，绝对没问题，主程序为emd1.m，用户可以随意更改里面的信号函数Xn。(This program converts a signal with EMD nearly debugged, absolutely no problem, main program for emd1.m, the user can freely change inside the signal function Xn.)

matlab的直接序列扩频DSSS的Rake接收机仿真(DSSS direct sequence spread spectrum matlab the Rake Receiver Simulation)

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.)

辐射阻尼matlab模拟，科学研究很有用处。(Radiation damping in magnetic resonance experiments)

matlab/simulink 三种方法的弹道仿真（追踪法、比例导引法、平行接近法） (matlab/simulink Trajectory Simulation of three methods (tracing method, proportional navigation law, parallel close to the law))

说明：  实现信号稀疏变换、观测矩阵设计、重构算法等一系列最新理论成果。(Achieve sparse signal transformation, observation matrix design, reconstruction algorithm and a series of recent theoretical results.)

利用matlab 软件编程的三次样条插值函数(matlab spline)

说明：  将数组a[0]~a[size-1] 中重复的字母删除（仅仅保留第一次出现的字母，后续的重复字母均删除）(The array a [0] ~ a [size-1] Remove duplicate letters (just the first time to retain the letters, follow-up letters were removed duplication))

数学建模算法全收录，各种算法均有详细说明以及相应的代码(Mathematical modeling algorithm , various algorithms have described in detail and the corresponding code)

matlab 音频处理工具箱 音频编辑 计算频谱分析(audio processing toolbox)