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说明：  simulation of ballistic target trajectiry

基于牛顿拉夫逊法的潮流计算程序源代码，有例子(Newton Raphson method based on the trend of computer program source code, there are examples)

一个用MATLAB编程的源程序，能实现回响的峡谷效果(a program compiled by matlab,it can produced an effect of canyon reecho.)

大地电磁二维正演程序是电磁法的基础编程，首先设置地电断面然后通过正演模拟电磁场在大地中的传播形式来得到地下地质体的电阻率情况，从而得到地下地质体情况(Two-dimensional magnetotelluric forward modeling procedure is based programming electromagnetic method, first set the geoelectric section and then through the forward modeling electromagnetic propagation in the earth in the form to get the subsurface resistivity body condition, resulting in underground geological conditions)

用于对简单电力系统网络的潮流计算，只需输入线路元件参数，节点电压初值，PQ,PV节点的初值，即可输出各节点电压，平衡节点的功率，线路的功率。(for easy power system)

matlab实现不完全微分PID算法源程序(matlab incomplete derivative PID algorithm source)

surf算法在MATLAB软件平台上的实现，用于图像中的角点检测(surf to discern the corners in pictures)

空间后方交汇求解相机外方位元素，变量如下 ％ x，y 控制点像点坐标 ％ X，Y，Z 控制点空间坐标 ％f焦距 ％X0，Y0，Z0，a，b，c六个外方位元素 ％x0，y0，-f内方位元素：光心坐标 ％cha，chb，chc：外方位角元素改正数 ％count 记录迭代次数 ％R 旋转矩阵 ％A 线性化的偏导系数矩阵 ％L 常数项矩阵 ％M0 外方位元素矩阵 ％M1 外方位元素改正数矩阵(meeting space for rear camera position outside elements, as follows% variable x, y control point pixel coordinates% X, Y, Z coordinates control room focal length f%% X0, Y0, Z0, a, b, c 6 exterior orientation elements% x0, y0,- f position within elements : Optical Center coordinates% cha, chb, chc : Foreign elements azimuth correction% record count the number of iterations rotation matrix R%% A linear partial derivative of the coefficient matrix% L constant Matrix% M0 Orientation% M1 matrix elements of exterior orientation correction matrix)

最小外接矩形，基于最小外切矩形方法来计算目标区域的长宽(Minimum bounding rectangle)

交流永磁同步电机模糊PID控制和单纯PID控制比较，突出模糊控制的 优点，可供学习模糊PID和电机的人参考。(AC permanent magnet synchronous motor PID control and fuzzy PID control relatively simple, highlighting the advantages of fuzzy control for learning and motor fuzzy PID Reference.)