Attitude determination with GPS based on predictive filter

The attitude determination with Global Positioning Systems (GPS) can be realized using predictive filter based on dual-difference carrier phase. Compared with single-difference, dual-difference carrier phase can improve accuracy of attitude estimate. This algorithm is robust with respect to initial condition errors. It can converge to true attitude rapidly. The simulation show that attitude estimate based on this algorithm is almost similar to which based on nonlinear least-squares algorithm, and robust to initial condition errors. When three baselines are used, during the maneuver of vehicle, the baselines nearly orthogonal can estimate attitude better than other frames of baselines. Copyright(C) 2001 IFAC.