PID

改程序描述了从WGS84坐标系转换为大地坐标系的程序转换，该实验对学习卫星导航的人来说，很有用(the program is about the algorithm of conviter from WGS84 to HBL)

intelligent control notes

哈尔滨工业大学MATLAB讲义，ppt格式。(Harbin Institute of Technology MATLAB lecture, ppt format.)

自己编写的kalman最优化递归算法的滤波器实例程序，每一步都做了详细的标注，并且附上了与程序对应的kalman算法的介绍与讲解。(I have written to optimize recursive algorithm kalman filter example programs, each step in detail in the label, and attach the corresponding kalman algorithm and procedures are introduced and explained.)

实现三相整流功能仿真!三相六开关PFC仿真(Functions to achieve three-phase rectifier simulation! Three-phase six-switch PFC simulation)

本资料为杨鹏老师所编，内涵了gre词汇的背诵方法，以及以前版本所没有的易混单词，实为难得的好材料(the book mainly describes an effective way to recite GRE words.)

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此程序对于学习图像处理的学生很有用处，不妨看看。(This program for students to learn useful image processing, take a look.)

1. 图像二值化 2. 边界跟踪，去除离散点 3. 边界提取 4. 删除短边 5. 区分河流与道路 先找到桥梁，利用桥梁上的种子点 对道路进行跟踪，从而提取整条主干道。 (1 image binarization 2boundary tracking, removal of discrete points 3 boundary extraction 4 Remove the short side 5 distinguish rivers and roads the curvature is too large) First find the bridge, the bridge on the use of seed points on the road to follow, thereby extracting the whole trunk.)

倍频程序适合各类晶体倍频转换效率计算和最佳匹配角模拟分析(Octave program)