Newton_Steffensen

各种功率谱估计算法的matlab程序。 (A variety of power spectrum estimation algorithm matlab program.)

matlab tutorial files...

说明：  寻找三次样条多项式需要求解大量的线性方程。实际上，给定N个断点，就要寻找N-1个三次多项式，每个多项式有4个未知系数。这样，所求解的方程组包含有4*(N-1)个未知数。把每个三次多项式列成特殊形式，并且运用各种约束，通过求解N个具有N个未知系数的方程组，就能确定三次多项式。 (find cubic spline solving polynomial need a lot of linear equations. In fact, given N breakpoints, it is necessary to look for N-1 cubic polynomial, each with four polynomial coefficients unknown. Thus, by solving the equations contain 4* (N-1) unknown. Each cubic polynomial Timing special form, and use of various constraints, by solving N with N unknown coefficient equations, we can identify three polynomial.)

在相干通信中精确恢复眼图，使用正弦函数作为例子，经过欠采样后，对数据进行FFT变换后在进行精同步(After the restoration of coherent communications precise eye, using a sine function as an example, after subsampling, FFT transform data during fine synchronization)

matlab储能模型，属于储能的等效模型 (Matlab energy storage model, which belongs to the equivalent model of energy storage.)

说明：  矩阵求逆（lu分解法），已在matlab下进行测试，计算精度大概为小数点后4位(Matrix inversion (lu decomposition method), has been tested under matlab, after the decimal point accuracy is approximately 4)

用内插法写的FIR高通滤波器，是基于MATLAB2010写的(Written by interpolation FIR high-pass filter, is written based on MATLAB2010)

对振动信号进行分析，通过WVD进行视频分析(Vibration signals were analyzed and video analyzed by WVD)

说明：  自适应滤波matlab程序自适应滤波matlab程序(Adaptive filtering adaptive filtering matlab matlab process procedures)

Character Recognition Example (I&II)- Pre-processing of Image (Matlab Code)(Character Recognition (I)