Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Stefano Casotto"'
Publikováno v:
Remote Sensing, Vol 14, Iss 23, p 6121 (2022)
In GNSS-based navigation onboard Low Earth Orbit (LEO) satellites, typical accuracy requirements are 10 cm and 0.1 mm/s for 3D position and velocity, respectively. Previous works have shown that such performance is achieved by including Galileo measu
Externí odkaz:
https://doaj.org/article/b0b903be963b4ef28db8174ef8d44d24
Autor:
Stefano Casotto, Pietro Giordano, Mauro Sciarratta, Paolo Zoccarato, M. Bardella, Francesco Darugna
Publikováno v:
Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021).
Onboard GNSS-based satellite navigation is becoming a reality due to the need for current and planned Earth observation missions to be equipped with real-time, high-accuracy positioning. In this perspective, an existing Precise Onboard Orbit Determin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bf6cc9340740ebd3367d412ad8f0832
https://doi.org/10.33012/2021.18033
https://doi.org/10.33012/2021.18033
Publikováno v:
Advances in Space Research. 62:935-943
Precise orbit determination requires accurate models for the orbital perturbations. Next to the well-known gravitational forces, the solar radiation pressure (SRP) is the main perturbation for navigation satellites. SRP results from the interaction b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c721ee86bbb43c4cfd06cec948c3f30a
https://doi.org/10.1016/j.asr.2018.05.036
https://doi.org/10.1016/j.asr.2018.05.036
Autor:
Stefano Casotto
The Keplerian differential state transition matrix (KDSTM) is a fundamental tool in investigations of the sensitivity of orbital evolution to changes in initial conditions, in perturbation analysis, as well as in targeting and rendezvous operations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d87f2c58d1f09da6c40cdfb1f5084d43
http://hdl.handle.net/11577/3287042
http://hdl.handle.net/11577/3287042
Autor:
Stefano Casotto
Publikováno v:
Celestial Mechanics and Dynamical Astronomy. 124:215-234
The analysis of relative motion of two spacecraft in Earth-bound orbits is usually carried out on the basis of simplifying assumptions. In particular, the reference spacecraft is assumed to follow a circular orbit, in which case the equations of rela
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9aa8359c31b9da5ff5bdab629edd8c2c
https://doi.org/10.1007/s10569-015-9660-1
https://doi.org/10.1007/s10569-015-9660-1
Autor:
Stefano Casotto, Elena Fantino
Publikováno v:
Journal of Geodesy. 83:595-619
Four widely used algorithms for the computation of the Earth’s gravitational potential and its first-, second- and third-order gradients are examined: the traditional increasing degree recursion in associated Legendre functions and its variant base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46955d3f6ccdc8d354f0a9fc87d9b283
https://doi.org/10.1007/s00190-008-0275-0
https://doi.org/10.1007/s00190-008-0275-0
Autor:
Stefano Casotto, Elena Fantino
Publikováno v:
Journal of Geodesy. 83:621-634
This contribution deals with the derivation of explicit expressions of the gradients of first, second and third order of the gravitational potential. This is accomplished in the framework of tensor analysis which naturally allows to apply general for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::872b4791f4c0a6e0004b9103b240abf7
https://doi.org/10.1007/s00190-008-0276-z
https://doi.org/10.1007/s00190-008-0276-z
Publikováno v:
Acta Astronautica. 61:286-297
Pseudo-equinoctial elements have been developed to generate sub-optimal first guess solutions for low-thrust transfer trajectories. In this paper we assess the optimality of such a simplified transcription technique and their suitability to initializ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f49b4be04aad15c5cffb1856cb382920
https://doi.org/10.1016/j.actaastro.2007.01.017
https://doi.org/10.1016/j.actaastro.2007.01.017
Autor:
Stefano Casotto, Elena Fantino
Publikováno v:
Advances in Space Research. 40:69-75
This work is concerned with the comparison of four of the best-known methods for the computation of the gravitational potential and its gradients: the traditional formulation in terms of Associated Legendre Functions in spherical coordinates; the non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a9a46b7e8c5acf2644d64e65b488b92
https://doi.org/10.1016/j.asr.2007.01.021
https://doi.org/10.1016/j.asr.2007.01.021
Publikováno v:
Celestial Mechanics & Dynamical Astronomy. 62:117-143
Some aspects for efficient computation of the tidal perturbation due to the ellipticity effects of the Earth, the luni-solar potential on an Earth-orbiting satellite and the perturbations of the satellite's radial, transverse and normal position comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5659b44183c8230b626750374cac7a84
https://doi.org/10.1007/bf00692083
https://doi.org/10.1007/bf00692083