AbstractSolar oscillation, which causes the sunlight intensity and spectrum frequency change, has been studied in great detail, both observationally and theoretically. In this paper, owing to the existence of solar oscillation, the time delay between the sunlight coming from the Sun directly and the sunlight reflected by the other celestial body such as the satellite of planet or asteroid can be obtained with two optical power meters. Because the solar oscillation time delay is determined by the relative positions of the spacecraft, reflective celestial body and the Sun, it can be adopted as the navigation measurement to estimate the spacecraft's position. The navigation accuracy of single solar oscillation time delay navigation system depends on the time delay measurement accuracy, and is influenced by the distance between spacecraft and reflective celestial body. In this paper, we combine it with the star angle measurement and propose a solar oscillation time delay measurement assisted celestial navigation method for deep space exploration. Since the measurement model of time delay is an implicit function, the Implicit Unscented Kalman Filter (IUKF) is applied. Simulations demonstrate the effectiveness and superiority of this method.

    HighlightsA novel time delay measurement on the basis of solar oscillation is introduced.The Implicit Unscented Kalman Filter (IUKF) is applied.The combination of star angle measurements and only one time delay measurement.


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    Titel :

    Solar oscillation time delay measurement assisted celestial navigation method


    Beteiligte:
    Ning, Xiaolin (Autor:in) / Gui, Mingzhen (Autor:in) / Zhang, Jie (Autor:in) / Fang, Jiancheng (Autor:in) / Liu, Gang (Autor:in)

    Erschienen in:

    Acta Astronautica ; 134 ; 152-158


    Erscheinungsdatum :

    2017-01-28


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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