practice

欧拉角表示法具有简便、几何意义明显等优点，同时姿态敏感器可以直接测出这些参数，能较方便地求解用这些姿态参数描述的姿态动力学方程。但采用欧拉角的姿态描述方法存在奇点问题，且需多次三角运算。而采用四元数表示方法则可以避免这些问题。(conversion between euler angle and quaternion method)

线性SVM分类，数据已给出，代码很详尽哈(Linear SVM classification, data has been given, the code is very detailed and Kazakhstan)

4节点板单元刚度矩阵，用于计算平面板单元刚度矩阵(4-node plate element stiffness matrix is ​ ​ used to calculate the stiffness matrix flat panel unit)

多用户的高斯信道CDMA仿真，可以模拟传输三路语音信号(Multi-user Gaussian CDMA channel simulation can simulate the three-way voice signals transmitted)

提取轮廓线的基本方法，大量的提取例子，和大量的代码示例(The basic method of extracting contour extraction examples, and a large number of sample code, a large number of)

l这个工具是一个高版本的inux tools(this is a high linux tools)

说明：  ARMA模型拟分为（一）（二）两部分发布，第一部分主要包括ARMA模型简介，模拟ARMA数据、拟合ARMA模型,单纯的AR模型或MA模型的定阶。第二部分主要包括ARMA模型的定阶策略、模型选择、残差分析。(ARMA model fitting is divided into two parts: (1) and (2). The first part mainly includes the introduction of ARMA model, ARMA data simulation, ARMA model fitting, AR model or MA model order.The second part mainly includes the fixed-order strategy, model selection and residual analysis of ARMA model.)

MATLAB数字水印程序MATLAB数字MATLAB数字水印程序水印程序(MATLAB program MATLAB digital watermarking digital watermarking MATLAB digital watermarking process procedures)

基于大津算法的阈值分割，图像二值化，处理灰度图像，讲目标和背景分离(Otsu threshold segmentation)

matlab工具箱符号说明,其中主要是描述说明一些英文含义(matlab toolbox introduction)