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Simultaneous navigation and mascon gravity estimation around small bodies
dc.creator | Sánchez Merino, Julio César | es |
dc.creator | Schaub, Hanspeter | es |
dc.date.accessioned | 2023-11-13T13:04:17Z | |
dc.date.available | 2023-11-13T13:04:17Z | |
dc.date.issued | 2023-12 | |
dc.identifier.citation | Sánchez, J.C. y Schaub, H. (2023). Simultaneous navigation and mascon gravity estimation around small bodies. Acta Astronautica, 213, 725-740. https://doi.org/10.1016/j.actaastro.2023.09.023. | |
dc.identifier.issn | 0094-5765 | es |
dc.identifier.uri | https://hdl.handle.net/11441/150564 | |
dc.description | This is an open access article under the CC BY license | es |
dc.description.abstract | This manuscript develops a simultaneous navigation and gravity estimation strategy around a small body. The scheme combines dynamical model compensation with a mascon gravity fit. Dynamical compensation adds the unmodeled acceleration to the filter state. Consequently, the navigation filter is able to generate an onorbit position-unmodeled acceleration dataset. The available measurements correspond to the landmarks-based navigation technique. Accordingly, an on-board camera is able to provide landmark pixels. The aforementioned position-unmodeled acceleration dataset serves to train a mascon gravity model on-board while in flight. The training algorithm finds the optimal mass values and locations using Adam gradient descent. By a careful choice of the mascon variables and constraints projection, the masses are ensured to be positive and within the small body shape. The numerical results provide a comprehensive analysis on the global gravity accuracy for different estimation scenarios. | es |
dc.description.sponsorship | Horizon 2020 101025257 | es |
dc.format | application/pdf | es |
dc.format.extent | 16 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Acta Astronautica, 213, 725-740. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Small body exploration | es |
dc.subject | Spacecraft autonomy | es |
dc.subject | Deep space navigation | es |
dc.subject | Gravity field modeling | es |
dc.title | Simultaneous navigation and mascon gravity estimation around small bodies | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos | es |
dc.relation.projectID | 101025257 | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0094576523004794?via%3Dihub | es |
dc.identifier.doi | 10.1016/j.actaastro.2023.09.023 | es |
dc.contributor.group | Universidad de Sevilla. TEP945: Ingeniería Aeroespacial | es |
dc.journaltitle | Acta Astronautica | es |
dc.publication.volumen | 213 | es |
dc.publication.initialPage | 725 | es |
dc.publication.endPage | 740 | es |
dc.contributor.funder | European Union (UE). H2020 | es |
Ficheros | Tamaño | Formato | Ver | Descripción |
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AA_2023_Sanchez_Simultaneous_OA.pdf | 5.554Mb | ![]() | Ver/ | |