transfermatrix

利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。(Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.)

there is an other java project in eclipse explaine how to code a simple calculator with a motor class

主要用于计算半导体激光器调制的程序；可以针对常用的半导体激光器的调制进行数值分析(mainly used in the calculation of the semiconductor laser modulation procedures; can address common semiconductor laser modulation Numerical Analysis)

偏微分方程数值解法的程序包，其中包括laxfriedrichs，laxwendroff和迎风格式等例程(Numerical Solution of Partial Differential Equations of the package, including laxfriedrichs. laxwendroff upwind and other routines)

欧拉角与四元数 欧拉角与四元数 欧拉角与四元数 欧拉角与四元数 欧拉角与四元数(you you you you you you you you you you you you you you you you my )

求解流场二维无粘欧拉方程，中心差分，人工耗散(Solving the flow field in two-dimensional inviscid Euler equation, central difference, artificial dissipation)

最小二乘支持向量机做预测。程序可运行学习。在matlab上运行。(This is a program about prediction using LSSVM.It can run successfully for learning.This program can be used on matlab.)

说明：  satellite-tracking-opensource

关于流体计算软件FLUENT中Y+设置的一些建设性的讨论，值得大家参考。(On computational fluid dynamics software FLUENT some constructive discussions in the Y+ set is worth your consideration.)

QR方法是一种变换方法，是计算一般矩阵(中小型矩阵)全部特征值问题的最有效方法之一.(QR method is a transformation method is the calculation of the general matrix (small and medium-sized matrix) eigenvalue problem for all of the most effective methods.)