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MATLAB 地震波FFT变换 调幅，周期调节(MATLAB earthwave FFTtransform)

分析两时间序列之间的超前和之后关系，计算滞时长度，多用于水文气象方面分析研究(Analysis ahead of and after the relationship between the two time series, calculating the lag length, used for the analysis of hydrometeorological)

齿轮传动参数测定和公法线公差计算，变位直齿圆柱齿轮参数测定(Determination and the normal line of the gear transmission parameter tolerances calculation)

DOA估计：最大熵算法、最小模算法、最小方差算法。输入： 快拍数据协方差矩阵R，观察范围内各方向导向矢量，三维矩阵phiyz。输出：最小方差谱估计矩阵P。(DOA Estimation: maximum entropy algorithm, the minimum norm algorithm, the minimum variance algorithm. Input: snapshot of the data covariance matrix R, the steering vector of each direction in the observed range of three-dimensional matrix phiyz. Output: the minimum variance spectral estimation matrix P.)

说明：  分形理论计算，粗糙面结合面的法向载荷和法向接触刚度计算(fractal thoetry simulation)

阻尼牛顿法、最速下降法、变尺度法的matlab程序。(Damped Newton' s method, steepest descent method, variable metric method matlab program.)

雅可比迭代（过关法）计算实对称矩阵的特征值和特征向量(Jacobi iteration (immigration law) the calculation of Real Symmetric Matrix Eigenvalues and eigenvectors)

本算法是基于数值计算中的SQP编写的MATLAB程序。非常实用的一个小程序。(This algorithm is based on the numerical calculation of SQP written MATLAB program. Very practical one small program.)

用无网格法计算VAN DE POL 振子(calculate van de pol oscillator by using meshless method)

实对称矩阵的schur分解，编译即可运行，需要文件输入(schur decomposition for real symmetric matrix,the program can run successfully, you need a file for input)