无迹卡尔曼滤波，摒弃了对非线性函数进行线性化的传统做法，采用卡尔曼线性滤波框架，对于一步预测方程，使用无迹(UT)变换来处理均值和协方差的非线性传递，就成为UKF算法-Unscented Kalman filter, eliminating the linearization of the nonlinear function of the traditional practice of using a linear Kalman filter framework for further pre