Abstract: Aimed at the environment of the high latitude and the demand of repeat certain range observation by long-term ice station in Arctic science exploration,a navigation and positioning system of autonomous & remotely operated underwater vehicle(named"Arctic ARV") is developed for the environment under sea ice.An independent navigation method is put forward based on the correction of the sea ice motion.The real-time accurate position relative to the sea ice is obtained by compensating the information of the sea ice motion at the interval.It enhances not only the application value of the observation data,but also the working security under the sea ice.The navigation system is proved highly accurate and stable by the simulation research and the application under the Arctic ice.