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Volume 6, Issue 2 (Suppl) J Aeronaut Aerospace Eng
ISSN: 2168-9792 JAAE, an open access journal Satellite 2017
May 11-13, 2017
May 11-13, 2017 Barcelona, Spain
3rd International Conference and Exhibition on
Satellite & Space Missions
Necklaces theory applied to satellite constellation design
Eva Tresaco
University of Zaragoza, Spain
S atellite constellations are groups of satellites working cooperatively and following the same goal. In this work, we recall different
ways to design satellite constellations. Satellite constellation design has been since its beginning a process that required a high
number of iterations due to the lack of established models for the generation and study of constellations. This situation resulted in
the necessity of specific studies for each particular mission, being unable of extrapolate the results from one mission to another.
Fortunately, in the last decade, new theoretical models were developed that include in their formulation all the former configurations.
One of these models is the flower constellations. In this work, we present these constellations along with the 2D-lattice flower
constellation theory, which represents an improvement of the original theory since its formulation is simpler and has a physical
meaning. We focus on the application of the theory of necklaces to the determination of the reference orbit of the constellation. This
approach opens new design possibilities and brings what we named necklace flower constellations. Finally, we introduce a time
distribution methodology to generate constellations whose satellites share a set of relative trajectories and maintain that property
over time without orbit corrections. This distribution methodology is able to generate all kinds of satellites configurations including
equally spaced time distributions (as the Flower Constellations Theory does) but also formation flying. To sum up, we will present
examples of missions in which the satellites present the ground-track repetition property, constellations based on high eccentricity
orbits and formation flying designs.
Torus representation of the constellation distribution
(Ω,ω,M)-space representation of the constellation Inertial orbits of the constellation
Biography
Eva Tresaco completed her PhD in 2010 at University of Zaragoza. She has experience in Research, Teaching and Administration both at aerospace companies
and institutions of higher education. Currently, she works as an Associate Professor at Centro Universitario de la Defensa Zaragoza (Spain). Her main research
interests include “Celestial Mechanics and Dynamical Systems” where she has co-authored over 20 scientific papers and she has participated in many research
projects. She is a senior member of American Institute of Aeronautics and Astronautics.
Eva Tresaco, J Aeronaut Aerospace Eng 2017, 6:2(Suppl)