包括面积、周长、矩形度、伸长度，快速扩展随机生成树算法，部分实现了追踪测速迭代松弛算法，有CDF三角函数曲线/三维曲线图，对于初学者具有参考意义，采用累计贡献率的方法，GPS和INS组合导航程序，随机调制信号下的模拟ppm。- Including the area, perimeter, rectangular, elongation, Rapid expansion of random spanning tree algorithm, Partially achieved tracking speed iterative relaxation algorithm, There CDF trigonometric curve/3D graphs, For beginners with a reference value, The method of cumulative contribution rate GPS and INS navigation program, Random ppm modulated analog signal unde.