EFFICIENT USE OF THE GEOESTATIONARY SATELLITE ORBIT: ORBITAL POSITION OPTIMIZATION / USO EFICIENTE DA ÓRBITA DE SATÉLITES GEOESTACIONÁRIOS: OTIMIZAÇÃO DAS POSIÇÕES ORBITAIS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

This work is related to the efficient use of the geostationary satellite orbit. It presents and describes an optimization model which chooses the best orbital position for each satellite so that the length used orbital arc is minimized. A mathematical model considering aspects such as interference, geometry details (orbital position of the systems, earth station position, boresight of the antenna, etc) is proposed. This model was used in the definition of a constrained optimization problem in which the cost function is the length of the used orbital arc. Constrained imposed by propagation aspects (min- imum elevation angle) and by the maximum allowable interference levels (aggregate and single-entry) are considered. The optimization algorithm re- quires the evaluation of the Gradient vector and the Hessian matrix. To avoid numeric problems, analytic expressions of these quantities were de- rived. Results of the application of this model to specific situations involving real data were also described and conducted to solutions where the length of the orbit used was minimized

ASSUNTO(S)

optimization geoestationary satellite orbit fixed satellite service satellite communications servico fixo por satelite otimizacao orbita de satelites geoestacionarios comunicacao via-satelite

ACESSO AO ARTIGO

Documentos Relacionados