In a sun-heading determination scenario, coarse sun sensors (CSSs) can be paired with rate gyroscopes in order to estimate sun-line direction and rotation rate. Relying solely on CSS measurements for sun-heading and spacecraft rotation rate estimations is advantageous in scenarios where reliance on the fewest number of devices is desired. Here, the challenge is to find a robust method for heading determination relying neither on rate gyroscopes nor on spacecraft dynamics. In such a scenario, the rotation rate of the spacecraft is estimated in order to provide state derivative control or simply for better sun-heading estimation. A novel sun-heading filter is derived that estimates only the observable components of the body-rate vector as the rate about the sun-heading axis remains unobservable. Elegantly switching between kinematic formulations to avoid singularities of one description, it provides not only better sun-heading estimates but also a partial body-rate estimate. The new filter is compared to two filters for gyroscopes-less sun-heading estimation. One comparison filter uses a projection method to remove the unobservable rate component, and another comparison filter uses numerical heading differences to estimate a rotation rate. The filters vary in state vectors, kinematics, and filter types, with the goal of controlling or removing nonobservability.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Removing Rate Unobservability in Sun-Heading Filters Without Rate Gyroscopes


    Beteiligte:
    Teil, Thibaud (Autor:in) / Schaub, Hanspeter (Autor:in) / Piggott, Scott (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2020-04-22


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Removing Rate Unobservability in Sun-Heading Filters Without Rate Gyros

    Teil, Thibaud / Schaub, Hanspeter / Piggott, Scott | TIBKAT | 2019


    AUTOMATIC HEADING CORRECTION FOR DIRECTIONAL GYROSCOPES

    OLTHETEN ERIK JOHN / HALVERSON AARON THOMAS | Europäisches Patentamt | 2020

    Freier Zugriff

    Automatic heading correction for directional gyroscopes

    OLTHETEN ERIK JOHN / HALVERSON AARON THOMAS | Europäisches Patentamt | 2020

    Freier Zugriff

    Developments in Rate Gyroscopes

    R. P. Collinson / A. R. Essex | NTIS | 1968


    Developments In Rate Gyroscopes

    Collinson, R.P.G. / Essex, A.R. | Emerald Group Publishing | 1967