@PhDThesis{EspíndolaDiaz:2017:AuDyAp,
author = "Esp{\'{\i}}ndola Diaz, Jorge Enrique",
title = "An autonomous and dynamical approach to small satellite ground
stations networks",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2017",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2017-07-18",
keywords = "adapted hungarian algorithm, ADSGS, ground station networks,
software defined radio, algoritmo h{\'u}ngaro adaptado, redes de
esta{\c{c}}{\~a}o terrenas, radio definido por software.",
abstract = "The costs in satellite operations are generally not negligible,
especially for longterm missions. An alternative to lower costs is
to increase the level of automation in procedures whenever
possible. This thesis proposes a dynamic and autonomous approach
to small satellite ground station networks aimed at minimizing
these operational costs. The proposed solution is called the ADSGS
(Autonomous and Dynamic System Ground Station) and is a middleware
with hardware and software components to operate in a distributed
network environment of ground stations. In this work the SATNet
network was considered as currently it lacks an allocation
component with the characteristics of dynamism and autonomy. In
ADSGS this is provided through the use of artificial intelligence
in a rule-based expert system. In the proposal, an ADSGS network
agent operates autonomously and dynamically on the SATNet network
where the associated station components are managed. The ADSGS
agent uses an adapted version of the Hungarian Algorithm for
combinatorial optimization of allocation problems and responds to
events such as service interruption. The proposed hardware
component uses COTS and Software Defined Radio (SDR) technology
while the software component uses packages such as Orbitron,
ProEst, the SINTA expert system, among others. UML modeling is
provided to document the software component. A case study is made
to illustrate the main features of the ADSGS consisting of a small
simulation in MATLAB with STK (Systems Tool Kit) two scenarios of
designation (1-to-m and n-to-m) of stations in the SATNet network
to satellites by the ADSGS agent. RESUMO: Os custos nas
opera{\c{c}}{\~o}es de sat{\'e}lites geralmente n{\~a}o
s{\~a}o desprez{\'{\i}}veis, especialmente para miss{\~o}es de
longa dura{\c{c}}{\~a}o. Uma alternativa para baratear custos
{\'e} aumentar o n{\'{\i}}vel de automa{\c{c}}{\~a}o em
procedimentos quando for poss{\'{\i}}vel. Este trabalho de tese
prop{\~o}e uma abordagem din{\^a}mica e aut{\^o}noma para
opera{\c{c}}{\~o}es espaciais em redes de esta{\c{c}}{\~o}es
terrenas para pequenos sat{\'e}lites que visa minimizar seus
custos operacionais. A solu{\c{c}}{\~a}o proposta denomina-se
ADSGS (Autonomous and Dynamic System Ground Station em
Ingl{\^e}s) e {\'e} um middleware com componentes de hardware e
software para atua{\c{c}}{\~a}o em um ambiente
distribu{\'{\i}}do em uma rede de esta{\c{c}}{\~o}es terrenas.
Neste trabalho foi adotada a rede SATNet que carece de um
componente de aloca{\c{c}}{\~a}o com as caracter{\'{\i}}sticas
de dinamismo e autonomia. No ADSGS isto {\'e} oferecido mediante
o uso da intelig{\^e}ncia artificial em um sistema especialista
baseado em regras. Na proposta, um agente de rede da ADSGS atua
aut{\^o}noma e dinamicamente na rede SATNet onde se gerenciam
componentes das esta{\c{c}}{\~o}es associadas. O agente ADSGS
utiliza uma vers{\~a}o estendida do Algoritmo H{\'u}ngaro para
otimiza{\c{c}}{\~a}o combinat{\'o}ria de problemas de
aloca{\c{c}}{\~a}o e responder a eventos como
interrup{\c{c}}{\~a}o de servi{\c{c}}os. O componente de
hardware proposto utiliza elementos de hardware COTS e tecnologia
SDR (Software Defined Radio) ao passo que o componente de software
utiliza pacotes como Orbitron, ProEst, o sistema especialista
SINTA, entre outros. A modelagem UML {\'e} oferecida para
documentar o componente de software. Um estudo de caso {\'e}
feito para ilustrar as principais funcionalidades do ADSGS
consistindo de uma pequena simula{\c{c}}{\~a}o em MATLAB com STK
(Systems Tool Kit) e dois cen{\'a}rios de designa{\c{c}}{\~a}o
(1-to-m e n-to-m) de esta{\c{c}}{\~o}es na rede SATNet a
sat{\'e}lites pelo agente ADSGS.",
committee = "Mattiello-Francisco, Maria de F{\'a}tima (presidente) and
Ferreira, Maur{\'{\i}}cio Gon{\c{c}}alves Vieira (orientador)
and Santos, Walter Abrah{\~a}o dos (orientador) and Kucinskis,
Fabricio de Novaes and Santos, Douglas Soares dos and Portnoy,
Daniel",
englishtitle = "Uma abordagem din{\^a}mica e aut{\^o}noma de redes de
esta{\c{c}}{\~o}es terrenas para pequenos sat{\'e}lites",
language = "en",
pages = "210",
ibi = "8JMKD3MGP3W34P/3P83BUE",
url = "http://urlib.net/ibi/8JMKD3MGP3W34P/3P83BUE",
targetfile = "publicacao.pdf",
urlaccessdate = "30 abr. 2024"
}