Research on the Dead Reckoning Method Applied to the Autonomous Navigation of Autonomous Underwater Vehicles

When AUV voyages over a long period of time,its navigation precision will be negatively affected by some factors,such as the irregular shape of the earth,the errors of the navigation sensors,and the install deviation of some sensors,such as the gyroscope compass and the Doppler velocity log.Here,the dead reckoning method of autonomous navigation is studied to better the autonomous navigation system according to the problems above.The test result proved that the navigation precision is improved evidently,and can be applied to revise the original method for AUV's autonomous navigation.