A base motion isolation algorithm is proposed for a rate biased RLG (Ring Laser Gyro) north finder subjected to vehicle disturbances. A single-axis rotation modulation scheme is used. Furthermore, the angular increment of the rotation of the turn table is utilized to compute the outputs of the third virtual gyroscope, by which the north finder consist of two gyroscopes and three accelerometers are translated into a Strapdown Inertial Navigation System (SINS) consist of three gyroscopes (two real and one virtual) and three accelerometers. Therefore, the north-finding problem is translated into an initial alignment problem based on a Kalman filter. The experiments results show that the new algorithm can effectively avoid the influences of vehicle disturbances. The 20min north finding accuracy of azimuth angle is better than 1' when the weather is gusty, the vehicle is rocking and the motor is running on.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Base motion isolation algorithm for rate biased RLG north finder with disturbances


    Contributors:
    Chu, Minsheng (author) / Wu, Wenqi (author) / Zhang, Yan (author) / Zhao, Xiqing (author)


    Publication date :

    2011


    Size :

    5 Seiten, 18 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Fiber optic gyroscope north finder

    Dyott, R. B. / Allen, D. E. / SPIE | British Library Conference Proceedings | 1994


    Product finder

    Online Contents | 2016


    Product finder

    Online Contents | 2014


    Product finder

    Online Contents | 2013


    Product Finder

    Online Contents | 2013