To enable precision approach and landing navigation, a carrier-phase DGPS/INS hybrid navigation system was developed characterized by the primary use of a GPS carrier-phase rather than a GPS pseudorange. Half the advantages of this system are derived from installing a reliable INS able to provide 6-degrees of freedom navigation data with a wide dynamic range, and maintain high availability and continuity. The other advantages of the system come from the use of DGPS/INS hybrid navigation to improve navigation accuracy. In this DGPS/INS hybrid navigation algorithm, the authors used the Kalman filter, which estimates the carrier-phase ambiguity as well as INS drift errors. This system can then utilize the GPS carrier-phase, although the majority of conventional DGPS/INS systems are based on the GPS speudorange. Because the GPS carrier-phase is tolerant to multipath errors, sub-meter positioning performance is achieved, while conventional DGPS/INS systems achieve accuracy over several meters.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Technical Report of National Aerospace Laboratory. Development of Carrier-Phase and DGPS/INS Hybrid Navigation Algorithm


    Contributors:
    M. Harigae (author) / M. Murata (author)

    Publication date :

    2000


    Size :

    42 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    Precise DGPS Navigation Using Carrier Phase Corrections

    Blomenhofer, E. T. / Hein, G. W. / Royal Institute of Navigation | British Library Conference Proceedings | 1994


    Land-vehicle navigation using multiple model carrier phase DGPS/INS

    Chen, G. / Grejner-Brzezinska, D.A. | Tema Archive | 2001


    Flight Evaluations of Carrier DGPS/INS Hybrid Navigation for Automatic Landing

    Harigae, M. / Tsujii, T. / Ono, T. et al. | British Library Conference Proceedings | 1998