3D-fdtd

用有限差分法求解雷诺方程，提供了一段简介的MATLAB程序(Reynolds equation using the finite difference method, the period of introduction MATLAB program)

1、根据所给的中国版图数据 绘制显示基于北京54坐标系的经纬度数据 编写兰勃特投影转换程序，转换上述数据，并显示 编写墨卡托投影转换程序，转换上述数据，并显示 同时，要绘制相对应的经纬网格，网格间距5度 2、根据所给的世界版图数据 绘制显示基于WGS84坐标系的经纬度数据 编写墨卡托投影转换程序，转换上述数据，并显示 计算北京(116.4，39.8)到巴黎(2.2, 48.52)的大圆轨迹，并显示 同时，要绘制相对应的经纬网格，网格间距5度(1, according to the Chinese territory given display data drawn based on latitude and longitude data write Beijing 54 coordinate system Lambert projection conversion process, the conversion of the data, and displays the write Mercator projection conversion process, the conversion of the data, and display the same time, Draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees 2, according to the world map rendering display data written to the Mercator projection based on latitude and longitude data conversion program WGS84 coordinate system, the conversion of the data, and displays the calculation Beijing (116.4, 39.8) to Paris (2.2, 48.52) the great circle track and display the same time, to draw the corresponding latitude and longitude grid, the grid spacing of 5 degrees)

很好用的单导线平差，具有单线的计算能力 可以已知两点或者方位角开始计算(Very good adjustment with a single wire, with one-way computing power can be known to start two or azimuth)

实现矿井采空区的孔隙率和粘性阻力系数，主要用于采空区瓦斯抽采(The porosity and viscosity resistance coefficient of mine goaf can be achieved.)

溃坝模型，采用无网格法模拟溃坝情况，简单快捷(Break model, the use of non-grid method to simulate dam case, simple and quick)

可靠性-最小路集-编程 计算图的最小路集，是装备可靠性课程的一个作业。(Reliability- minimal path sets- programming calculation of minimal path sets, equipment reliability courses a job.)

ansys非线性各向同性，非线性随动硬化(ANSYS nonlinear isotropic, linear kinematic hardening)

天线组阵中相位差的递推最小二乘估计与滤波(Phase array antenna group recursive least squares estimation and filtering)

说明：  数值分析matlab作业答案，介绍，matlab编程，数值分析计算(Numerical analysis matlab homework answers)

采用M语言仿真stribeck的三轴伺服系统，可以在低速情况下观察较强的摩擦现象(With M-language simulation stribeck three-axis servo systems, in the case of low friction phenomena observed strong)