RKDG2

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

. The 8-puzzle problem is a puzzle invented and popularized by Noyes Palmer Chapman in the 1870s. It is played on a 3-by-3 grid with 8 square blocks labeled 1 through 8 and a blank square. Your goal is to rearrange the blocks so that they are in order. You are permitted to slide blocks horizontally or vertically into the blank square. The following shows a sequence of legal moves from an initial board position (left) to the goal position (right).

说明：  MATLAB关于关于FFT频谱分析的程序(MATLAB on the on the FFT spectrum analysis program)

matlab 构造模型，可用于地质构造分析，非常好用！(Matlab tectonic model, and can be used in the analysis of geological structure, is very nice! )

共轭梯度迭代法，主要用于图像稀疏重建、图像去噪的算法(Conjugate gradient method, mainly for sparse image reconstruction, image de-noising algorithm)

偏微分方程数值解法，包括泊松方程，特征值方程，热传导方程和波动方程(PDEGUI demonstrates the finite difference solution of model problems involving Laplace s operator)

基于SVR的线性系统故障诊断的仿真程序， 由于辨识信号采用的都是随机信号，不是数值固定的信号，所以程序每次运行的结果都可能有所不同。(SVR linear system fault diagnosis based simulation program)

运用matlab编程语言，实现利用Householder变换和Givens变换求解矩阵的QR分解(Use matlab programming language, the realization and the Givens transformations using the Householder transformation matrix QR decomposition to solve)

M2M平台与终端接口规范V2.0(WMMP)(Interface Specification for M2M Service Platform and Terminal )

直接转矩控制（DTC）Matlab仿真文件(Direct Torque Control (DTC) Matlab simulation file)