GPS/DR Integration Algorithm Based on Technique of Measurement Disposal in Advance

Because GPS can not realize continuous and accurate position in the city and the vehicle dead reckoning system(DR) has the self-help in calculating the position,the state and measurement equations for the GPS/DR integrated system is proposed.Based on this.According to the different sampling frequency of GPS and DR,the technique of measurement in advance is introduced and used in the algorithm of GPS/DR integrated system,then the Kalman filtering equations are erected using the technique of measurement in advance,finally the above algorithm is validated by the practical dynamic experiment,and the corresponding conclusions are made.