An improved UKF algorithm for error reduction in the robot's interior self-localization was presented by combining minimum skewness sampling and fading memory filtering methods.The algorithm adopted minimum skewness sampling strategies for improving real time performance,decreasing the number of sampling points from 2n+1 to n+2.Adopting the fading memory square root filter to correct the weight values of measurement noises,so as to weaken filter divergence and improve robustness of the system.Secondly,the w...