part_IV

Wavelet analysis method for knock detection in injection engine

余弦分析采用最小二乘法，以适应一个正弦波的时间序列。余弦分析通常用于生物时间序列分析，演示predictible的节奏。这种方法可用于一个不平等的间隔时间序列。(Cosinor analysis uses the least squares method to fit a sine wave to a time series. Cosinor analysis is often used in the analysis of biologic time series that demonstrate predictible rhythms. This method can be used with an unequally spaced time series.)

基于4QAM的信道解码Matlab程序。(Based on the 4QAM channel decoder Matlab procedures.)

用于对IRIS数据进行分类的各种分类器，用于对多维采样点进行无监督分类。可根据类别数修改分类器，模式识别作业的部分代码。(IRIS data for the various classification categories, for sampling points on the multi-dimensional non-supervised classification. Can be modified in accordance with several types of classifiers, pattern recognition part of the operating code.)

说明：  这个是做模糊图像处理的一些例子，以及代码。各种方式去噪去模糊(This is to do some examples of fuzzy image processing, and code. Denoising a variety of ways to fuzzy)

说明：  matlab 频偏估计算法 幅度校正和角度校正(matlab )

this program simulates 2D electromagnetic Maxwell equations in transverse magnetic mode , by using finite difference time domain method FDTD

说明：  若干常微分方程求解问题的Matlab代码(Matlab code to solve Several ordinary differential equations problems )

Filter Gauss Low pass

对图像进行幻方矩阵大小为11的幻方置乱，并加入随机生成密钥(Magic square of the image matrix size of 11 scrambling magic square, and adding a randomly generated key)