An important element of Artemis and NASA’s campaign to explore the Moon is the autonomous onboard two-level targeter (TLT) used during all cislunar flight phases. The function of the TLT is to autonomously recompute the burn targets for the upcoming burn (or multiple burns) in response to navigation and vehicle dispersion providing a solution that meets all of the trajectory constraints. Although the TLT has been utilized previously as a ground-based planning tool, and flown onboard during the Artemis I mission, it’s complexity and iterative nature make is difficult to incorporate into and support rapid analyses such as robust optimal trajectory design applications where speed is essential. In this paper, a set of generalized linear targeting algorithms that mimics many of the properties of the TLT is derived. The generalized algorithms can handle single or multiple impulsive maneuvers, with multiple constraints at multiple fixed or variable times. A linear targeting algorithm for finite burn maneuvers is also derived. The generalized linear targeting algorithms are exceptionally fast and easy to implement in Monte Carlo analysis, linear covariance (LinCov) analysis, and robust optimal trajectory design. Several cislunar flight examples are provided.


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    Title :

    Generalized Linear Targeting For Cislunar Flight


    Contributors:

    Conference:

    46th Annual AAS Guidance, Navigation and Control (GN&C) Conference ; 2024 ; Breckenridge, CO, US


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Cislunar Navigation

    Burke, J. D. / Cesarone, R. J. / Hastrup, R. C. et al. | Springer Verlag | 2003


    Cislunar space

    NTRS | 1970


    Cislunar navigation

    Cesarone, R. J. / Burke, J. D. / Hastrup, R. C. et al. | NTRS | 2003


    Cislunar navigation

    Cesarone, R. J. / Burke, J. D. / Hastrup, R. C. et al. | NTRS | 2003