NASA’s Gateway Program plans to place a crew-tended spacecraft in a southern L2 Near Rectilinear Halo Orbit (NRHO). The selected NRHO has a 6.5 day period, characterized by periods of low relative velocity punctuated by high velocity perilune passes. Determining an accurate navigation solution in this sensitive region is challenging, yet it is important to understand navigation performance near perilune to support spacecraft activities planned in the vicinity. The aim of this paper is to investigate the predictive accuracy through perilune of navigation states under various operational concepts and contingencies. An error budget analysis is performed on the perturbations modeled in the simulation to gauge their impact to navigation errors. Secondly, a sensitivity analysis on the data quality investigates the impact to navigation errors near perilune. Finally, the relationship between predictive accuracy through perilune and propagation time is explored. Each analysis is performed for both non-crewed (quiescent) and crewed (active) configurations
A FOCUS ON NAVIGATION PERFORMANCE NEAR PERILUNE IN A NEAR RECTILINEAR HALO ORBIT FOR A CREWED STATION
Proceedings of the 44th Annual American Astronautical Society Guidance, Navigation, and Control Conference, 2022 ; Kapitel : 33 ; 555-567
2024-01-01
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch