Matlab

Plot the periodograms of the random data line codes and to multiply fft output with sampling time to make it similar to the analog counterpart. task 1 and 2 are about quantization

用matlab语言，实现双边带抑制载波调幅（DSB-SC）信号，并绘制出图(Matlab language used to achieve double sideband suppressed carrier amplitude modulation (DSB-SC) signal, and draw a map)

此程序是HHT中EMD经典实现方法之一，程序完整，正规，有丰富备注帮助初学者了解(This procedure is the HHT the classic EMD achieve one way, the integrity of the process, formal rich Remark help beginners understand)

激光散斑测量微流速，如果有散斑图，输入，给出相应的相对速度(find out the speed of laser speckle)

实现匹配滤波的matlab源代码,比较适合初学者！(Achieve matched filter matlab source code, suitable for beginners!)

CONTROLLING TECHNIQUES OF POWER ELECTRONIC

单极性SPWM控制和逆变器主电路的仿真模型 就基波性能来讲，单极性SPWM在线性调制下谐波性能优于双极性调制(Single polarity SPWM control and inverter main circuit simulation model In terms of its fundamental properties, single polarity SPWM modulation in the linear harmonic performance is superior to the dual polarity modulation )

内有关于监护仪的相关设计，仅供参考，不太完善请见谅(There on the monitor related design, for reference only, not perfect, please forgive me)

高速铁路路基沉降是一个复杂的系统过程,涉及不同时期、不同工况,选用单一的预测模型不足以反映路基整体的变形规律.Logistic模型及Verhulst模型的曲线均为S形,可以反映全过程的地基沉降与时间的关系.针对路基填筑期和降水期两个时段利用MATLAB软件编制程序计算模型参数,得到Logistic模型和灰色Verhulst模型,进而求得两者的最优加权组合模型.对比结果表明:在路基填筑期由两者的最优加权组合模型预测得到的结果与实测结果较吻合,拟合精度高于单一模型 而在降水期Verhulst模型的预测值更接近实测值,平均相对误差约为1.75％,拟合精度较高.(High-speed railway subgrade settlement process is a complex system involving different times and in different conditions, the choice of a single forecasting model does not adequately reflect the overall deformation of roadbed. Curve Logistic model and Verhulst models are S-shaped, the whole process can be reflected foundation settlement versus time. against roadbed construction period of two hours and precipitation using MATLAB software programming model parameters, the Logistic model and gray Verhulst model, and then get the optimal model of a weighted combination of the two. comparative results indicate : results and experimental results in the roadbed construction period by the weighted combination of the best of both models predicted than the anastomosis fitting accuracy than a single model precipitation predicted value of Verhulst model closer to the actual value of the average relative error approximately 1.75 fitting accuracy.)

Introduction to photonic crystals. Very good textbook on photonic crystals. Includes Matlab codes for analysis of photonic crystals by Transfer Matrix Method (TMM)