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Mapping orbits with low station keeping costs for constellations of satellites based on the integral over the time of the perturbing forces
Authors:Thais C Oliveira  Antonio FBA Prado
Institution:Instituto Nacional de Pesquisas Espaciais (INPE), Engenharia e Tecnologia Espaciais, Mecânica Espacial e Controle, Brazil
Abstract:The present paper is concerned with the search for orbits that have potential to require low fuel consumption for station-keeping maneuvers for constellations of satellites. The method used to study this problem is based on the integral over the time of the undesired perturbing forces. This integral measures the change of velocity caused by the perturbation forces acting on the satellite, so mapping orbits that are less perturbed, which generates good candidates for orbits that requires low fuel consumption for station-keeping maneuvers. The integral over the time depends only on the orbit of the spacecraft and the dynamical system considered. The type of engine and the control technique applied to the spacecraft are not considered to search for those orbits. It can be a good strategy to be applied for a first mapping of orbits. For this search, it is analyzed the integral of orbits with different values of the Keplerian elements in order to find the best ones with respect to this criterion. The perturbations considered are the ones caused by the third body, which includes the Sun and the Moon, and the J2 term of the geopotential. The results presented here show numerical simulations to obtain the integral of those perturbing forces for different orbits. The GPS and the Molniya constellations are used as examples for those calculations.
Keywords:Astrodynamics  Orbital maneuvers  Perturbation forces  Spacecraft dynamics  Orbits  Trajectories
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