Application of QPSO-PF in DR/GPS integrated navigation system
Zhide Liu · Transducer and Microsystem Technologies · 2012
Quantum PSO(QPSO)particle filter(QPSO-PF) is proposed by combing the QPSO algorithm with PF,by which the mileage coefficient error and azimuth error is estimated in DR/GPS integrated navigation system,and then the mileage coefficient and azimuth is corrected.In QPSO-PF,the quantum bit is used to encode the particle and the quantum rotating gate and mutation are introduced to guarantee the diversity of particle set,and the particles are redistributed by the optimization search of QPSO,and makes the particle set effectively approximate the true posterior probability distribution,which effectively alleviates the degenerative phenomenon and improves the precision of PF.The experimental results of vehicle experiment of DR/GPS integrated navigation system show the increase trend of error of DR navigation system is effectively restrained,and the positioning precision of integrated navigation system is effectively improved by using QPSO-PF.