A modified method of nonlinear attitude estimation based on EKF

This paper presents the design, analysis and performance of modified continuous extended Kalman filter based on complementary properties. The modified design departs from traditional solutions as better dynamic performance and steady-state performance for estimating the attitude angles on three axises, and effectively dominate the disturbance in practical system. In order to illustrate the better performance, the simulation results are given by comparing traditional extended Kalman filter with modified filter.