yichangjiance

数学实验中用matlab对猎狗追逐兔子进行的仿真和分析(Matlab to the hunting dog chasing rabbits simulation)

这个是时域MVDR算法，希望对大家有用。(This is a time-domain MVDR algorithm, and hope to be useful.)

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.)

采用bpsk调制的直扩通信系统的误码率仿真。可以直接运行，方便初学者使用。(BER modulation using bpsk DSSS communication system simulation. Can be directly run, easy for beginners to use.)

说明：  梅花生长仿真效果，使用C++和matlab实现(Plum growth simulation effect, the use of C++ And realize matlab)

THis is a presentation on Viola Joans Method and SIFT method introduced by David.G.Lowe

一维波动方程的反演，和成图以及其他功能。(One-dimensional wave equation inversion, and mapping and other features.)

双馈风力发电空载模型，经调试，可以运行。(Doubly fed wind power generator no-load grid model)

MATLAB 关于数学的一些资料，方便大家的学习，可以下载(Some information about the mathematics MATLAB to facilitate everyone' s learning, you can download)

ce document traite le cas de modèle hybride RN et AG