@Article{MerguizoSanchezYokoPrad:2015:StSoSt,
author = "Merguizo Sanchez, Diogo and Yokoyama, Tadashi and Prado, Antonio
Fernando Bertachini de Almeida",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Estadual Paulista (UNESP)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)}",
title = "Study of some strategies for disposal of the GNSS satellites",
journal = "Mathematical Problems in Engineering",
year = "2015",
volume = "2015",
pages = "382340",
abstract = "The complexity of the GNSS and the several types of satellites in
the MEO region turns the creation of a definitive strategy to
dispose the satellites of this system into a hard task. Each
constellation of the system adopts its own disposal strategy; for
example, in the American GPS, the disposal strategy consists in
changing the altitude of the nonoperational satellites to
500\ km above or below their nominal orbits. In this work,
we propose simple but efficient techniques to discard satellites
of the GNSS by exploiting Hohmann type maneuvers combined with the
use of the resonance to increase its orbital eccentricity, thus
promoting atmospheric reentry. The results are shown in terms of
the increment of velocity required to transfer the satellites to
the new orbits. Some comparisons with direct disposal maneuvers
(Hohmann type) are also presented. We use the exact equations of
motion, considering the perturbations of the Sun, the Moon, and
the solar radiation pressure. The geopotential model was
considered up to order and degree eight. We showed the
quantitative influence of the sun and the moon on the orbit of
these satellites by using the method of the integral of the forces
over the time.",
doi = "10.1155/2015/382340",
url = "http://dx.doi.org/10.1155/2015/382340",
issn = "1024-123X",
language = "en",
targetfile = "sanchez_study.pdf",
urlaccessdate = "03 maio 2024"
}