Stochastic stability of the derivative unscented Kalman filter
Hu Gao-Ge†a), Gao She-Shenga), Zhong Yong-Minb), Gao Bing-Binga)
       
Position errors ((a) longitude, (b) latitude, (c) altitude) obtained by the modified DUKF1 for the tightly coupled INS/GPS integrated system.