The navigation of vehicles oftentimes involves the use of key environment and vehicle parameters in the forward evolution of the state estimate and its associated uncertainty. Given the objective of achieving precision navigation, it is critical that the full effect of the parameters, including their uncertainties, is taken into account in the estimation process. When the parameter set is of high dimension, the computational complexity involved in projecting the parametric uncertainties into state uncertainties can make the navigation solution intractable for onboard computation. A method is presented that projects the uncertainties in the parameters through an equivalent process-noise structure leading to real-time computations supporting precision navigation. Having first shown that the procedure works for linear systems, the method is applied to generating a process-noise-like term that accounts for the uncertainty present in the spherical harmonics coefficients of a high-order gravitational acceleration model. Simulation studies are performed to show that the method can be applied to the conversion of the uncertainty in spherical harmonics gravity coefficients, which can be of dimension 10,000 and higher, to a process-noise representation that accurately predicts the position and velocity uncertainties for spacecraft navigation.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Projecting High-Dimensional Parametric Uncertainties for Improved State Estimation Error Confidence


    Contributors:


    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.54 Flugführung
    Local classification TIB:    770/7040




    PROJECTING DEVICE

    SHIMIZU SHINYA | European Patent Office | 2017

    Free access

    VEHICLE INFORMATION PROJECTING SYSTEM AND VEHICLE INFORMATION PROJECTING METHOD

    EJIRI TAKESHI | European Patent Office | 2018

    Free access

    VEHICLE INFORMATION PROJECTING SYSTEM AND VEHICLE INFORMATION PROJECTING METHOD

    EJIRI TAKESHI | European Patent Office | 2016

    Free access

    VEHICLE INFORMATION PROJECTING SYSTEM AND VEHICLE INFORMATION PROJECTING METHOD

    EJIRI TAKESHI | European Patent Office | 2020

    Free access