We present an extension of the nonlinear two-step estimation algorithm originally developed for the calibration of solid-state strapdown magnetometers. We expand the algorithm to include nonorthogonality within a sensor set for both two- and three-axis sensors. Nonorthogonality can result from manufacturing issues, installation geometry, and in the case of magnetometers, from soft iron bias errors. Simulation studies for both two- and three-axis sensors show convergence of the improved algorithm to the true values, even in the presence of realistic measurement noise. Finally the algorithm is experimentally validated on a low-cost solid-state three-axis magnetometer set, which shows definite improvement postcalibration. We note that the algorithm is general and can be applied to any two- or three-axis sensor set (such as accelerometers) with an error model consisting of scale, offset, and nonorthogonality errors.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Extension of a two-step calibration methodology to include nonorthogonal sensor axes


    Beteiligte:
    Foster, C.C. (Autor:in) / Elkaim, G.H. (Autor:in)


    Erscheinungsdatum :

    01.07.2008


    Format / Umfang :

    1472827 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Rotations about nonorthogonal axes.

    DAVENPORT, P. B. | AIAA | 1973


    An L-Shaped Array With Nonorthogonal Axes—Its Cramér–Rao Bound for Direction Finding

    Kitavi, Dominic Makaa / Wong, Kainam Thomas / Chun-Chiu Hung | IEEE | 2018


    Nonorthogonal coordinates

    LEE, R. C. K. | AIAA | 1971


    Camera Calibration Using Principal-Axes Aligned Conics

    Ying, Xianghua / Zha, Hongbin | Springer Verlag | 2007