基于双曲正切虎摸控制，相对于饱和函数，适合求导要求，更具实用性(Based on the hyperbolic tangent, the tiger touch control is more practical than the saturation function, which is suitable for derivation)

针对基于双曲线定位的DV-Hop算法中误差项的异方差性引起的定位误差大的问题，提出了一种基于加权双曲线定位的DV-Hop改进算法。算法分析了基于双曲线定位的DV-Hop算法模型中误差项的异方差性，用加权最小二乘法对异方差性进行纠正，对加权最小二乘法中的权值矩阵进行了推导并得到与跳数相关的最佳权值矩阵，使得误差项满足同方差性，所得估计值更加接近最佳线性无偏估计。仿真实验结果表明，所提算法在节点定位精度上较现有的基于双曲线定位的DV-Hop算法都有一定提高。(Aiming at the proble

二维定位算法 SI 双曲线定位TDOA 克拉美罗(a simple and efficient estimstor for hyperbolic location)

Solutions of numerical hyperbolic equations using Matlab

识别弯道车道线，通过Hough变换以及双曲线拟合来识别图像中弯道和直线的车道线。(The lane of lane is identified, and the lane of curve and straight line is identified by Hough transformation and hyperbolic fitting.)