Research Of Application Technology In GPS/DR Integrated Navigation System

An application technology in GPS/DR integrated navigation system is studied in this paper,in order to improve the precision,and ensure the reliability and continuity of vehicle navigation positioning system.Based on the implementation of this research,an experiment platform with practical values is established,on which the corresponding experiment is carried,and the result is analyzed.Firstly,the necessity and significance of developing integrated navigation is introduced,as well as its development history and combined models.Then,the detail theory of GPS,Dead Reckoning,and hardware structure of GPS/DR system are aggregated.Two filter models of GPS/DR integrated navigation system are introduced,and a filter mode based on spherical-surface model is proposed.Then,discrete-time kalman filter and H_∞filter applied in integrated navigation system are introduced,together with the comparison of this two filter models.Based on spherical-surface filter model and filter Algorithm,a system simulation experiment is carried.Based on our research,an experiment platform of GPS/DR integrated navigation system is established,and its hardware,software and installation are described at the end of the paper.Selection of sensor,SCM and GPS receive module and establishment of experiment system are discussed in hardware part, while software development environment and detailed flow of software design are discussed in software part.At last,kalman filter and H_∞filter are off-line implied in the experiment,and the result is analyzed.