Blood-Pulse-PPG

用Higuchi方法计算时间序列或波形的分形维数。(Higuchi method to calculate the fractal dimension for time series or waveform)

已知某系统传递函数G，可以调用改代码对系统进行降阶处理。功能同routh降阶相似，不过这里的分子阶次r和分母阶次k可以不止相差1。(Known transfer function of a system G, can call the code to deal with reduced-order system. Routh Reduction with similar features, but here the molecular order r and the denominator order k can be more than a difference of 1.)

解线性方程组的直接法（标准数值算法），包括高斯消去法程序、列主元高斯消去法程序、LU分解以及用LU分解求线性方程组、Cholesky分解以及用Cholesky分解求线性方程组、改进的Cholesky分解以及用改进的Cholesky分解求线性方程组、解三对角方程的追赶法。全部为本人原创程序，且全部经过测试无误。共9个MATLAB程序。程序内部含详细注释。(Solving linear equations of the direct method (standard numerical algorithms), including Gaussian elimination procedure, the column pivot Gaussian elimination procedure, LU decomposition and the use of linear equations, LU decomposition, Cholesky decomposition, and find line with the Cholesky decomposition linear equations, Cholesky decomposition and improved using the improved Cholesky decomposition of linear equations, solution of tridiagonal equations pursuit method. All of my original program, and all tested correctly. A total of nine MATLAB. Internal procedures with detailed notes.)

无网格EFG一维matlab程序 可参见张雄无网格专著(Meshless EFG one-dimensional matlab program can be found in Zhang Xiong meshless monograph)

包含霍夫曼编码，算数编码，LZ编码以及GUI界面(Include Huffman coding, arithmetic coding, LZ coding and GUI interface)

The demo of the Level Set method

基于matlab的编程实现基2时间抽取的FFT源算法，程序简单实用。(2 time programming based algorithm for extraction of the FFT source)

计算海水的潜温用新海水状态方程来计算，新海水状态方程(Calculate the potential temperature of sea water equation of state with the new terms, the new equation of state water)

NonLinear ODE Function

Eight psk communication system