Study on GNSS/DR integrated navigation

When a vehicle passes through a blind area such as a high-rise building, a tunnel or an overpass, it is prone to satellite signals being poor or interrupted, and DR (Dead Reckoning) has autonomous navigation capability and is not influenced by the environment. However, DR navigation accuracy is rather low, due to the error will increase with time. Therefore, the GNSS(Global Navigation Satellite System) / DR integrated navigation system was studied. The integrated navigation can improve the navigation precision in the blind area of the satellite. The experimental results show that GNSS/DR integrated navigation is effective for improvement of accuracy compares to DR in the blind area of satellite.