Closing the loop between mission design and navigation analysis
Greco, Cristian and Vasile, Massimiliano (2020) Closing the loop between mission design and navigation analysis. In: International Astronautical Congress, 2020-10-12 - 2020-10-14.
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Abstract
This research presents a contribution to the field of optimisation under uncertainty by proposing a nonlinear navigation analysis approach under both aleatoric and epistemic uncertainty. The navigation analysis is framed as a sequential filtering problem with an alternation of uncertainty propagation arcs and orbit determination instances. The state distribution is modelled as a mixture of kernels where the mixture weights are interval-valued to model the epistemic component. Specific techniques are discussed for Gaussian mixtures in particular. The uncertainty propagation step is solved by using Gaussian Hermite quadrature rules to compute the propagated means and covariances. The observation update is efficiently solved with a combination of variational inference and importance sampling, and a routine is developed to compute the posterior interval-valued weights. Given the distribution representation, lower and upper expectations of a generic quantity of interest are the solutions of linear programming problems and, therefore, are inexpensive to compute. The developed navigation analysis is finally applied to the robust quantification of the probability of impact of Europa Clipper with Jupiter’s moon Europa during one of its close flybys.
ORCID iDs
Greco, Cristian ORCID: https://orcid.org/0000-0001-5996-2114 and Vasile, Massimiliano ORCID: https://orcid.org/0000-0001-8302-6465;-
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Item type: Conference or Workshop Item(Paper) ID code: 74361 Dates: DateEvent12 October 2020Published2 October 2020AcceptedSubjects: Technology > Motor vehicles. Aeronautics. Astronautics Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Strategic Research Themes > Ocean, Air and Space
Technology and Innovation Centre > Advanced Engineering and ManufacturingDepositing user: Pure Administrator Date deposited: 27 Oct 2020 10:07 Last modified: 27 Sep 2024 00:30 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/74361