dig_wat_mark

四元数姿态解算程序，很适合初学者。。。。。。。。。。(compute )

此程序是2013年全国研究生数学竞赛的D题的折射部分的程序，则会是一个很好地程序，本程序用matlab编写实现。(This program is the 2013 National Graduate Mathematical Contest Problem D refraction part of the process, then there is a good program, this program using matlab implementation.)

数据库的完整性控制熟悉利用企业管理器为列创建DEFAULT约束、为列创建CHECK约束、为列创建UNIQUE约束、为列创建不允许为空约束、创建PRIMARY KEY约束、创建FOREIGN KEY约束(Integrity control of the database use Enterprise Manager to create the familiar column DEFAULT constraint, create a CHECK constraint for a column, create a UNIQUE constraint for a column, create a column does not allow null constraint, create a PRIMARY KEY constraint, create FOREIGN KEY constraint)

说明：  AVO 及其作用 AVO(Amplitude Versus Offset,振幅随偏移距的变化)技术用于研究地震反射振幅随炮点与接收器之间的距离即炮检距(或入射角)的变化特征(Amplitude Versus Offset)

用matlab进行概率密度函数的非参数估计，主要有parzen窗法和kn近邻法。分别对平均分布和正态分布进行了仿真。(Non-parametric estimation of the probability density function using matlab, main the parzen window method and kn nearest neighbor method. The average distribution and normal distribution were simulated.)

本代码是matlab编写的用来实现矩阵分解的典型方法，来自于2014年cvpr的文章代码。(Matrix decomposition in cvpr 2014 about DAKM algorithm using matlab. The DAKM s algorithm is powerful for Matrix decomposition . Matrix decomposition in cvpr 2014 about DAKM algorithm using matlab. The DAKM s algorithm is powerful.)

地质雷达仿真软件，可以模拟各种结构，得到仿真数据。可编程也脚本文件(Geological radar simulation software can simulate a variety of structures, to get the simulation data. Programmable also script file)

Huffman编码的MATLAB程序计算平均码长 和计算编码效率(Huffman coding MATLAB program)

Digital communication techniq

电话线出现断线或短路故障时，线路的阻抗则发生很大变化，利用电桥法测试出电阻的大小，进而得出线路故障的地方(Telephone lines appear disconnection or short circuit fault, the line impedance is changed, test out the size of resistance by Wheatstone bridge method, and then draw the line fault place )