TY - GEN
T1 - Evaluating the dependability of a LEO satellite network for scientific applications
AU - Athanasopoulou, Eleftheria
AU - Thakker, Purvesh
AU - Sanders, William H
PY - 2005
Y1 - 2005
N2 - Dependability is an important issue in LEO satellite networks. In this paper, we study the dependability of a proposed LEO satellite network for scientific data collection based on the Illinois Observing Nanosatellite (ION). In particular, we first use analytical techniques to determine the amount of radiation shielding and number of redundant components, such as batteries and regulators, needed to achieve particular reliability goals for an individual satellite. We then incorporate the satellite model into a larger satellite network model to analyze network performance and dependability using simulation. Both models are represented as stochastic activity networks (SANs) in Möbius, making it possible to combine them and choose the best solution technique (analytical vs. simulation). Our results show how accumulated radiation dosage affects the functioning of the proposed network, and how redundancy and shielding can be profitably used to increase dependability.
AB - Dependability is an important issue in LEO satellite networks. In this paper, we study the dependability of a proposed LEO satellite network for scientific data collection based on the Illinois Observing Nanosatellite (ION). In particular, we first use analytical techniques to determine the amount of radiation shielding and number of redundant components, such as batteries and regulators, needed to achieve particular reliability goals for an individual satellite. We then incorporate the satellite model into a larger satellite network model to analyze network performance and dependability using simulation. Both models are represented as stochastic activity networks (SANs) in Möbius, making it possible to combine them and choose the best solution technique (analytical vs. simulation). Our results show how accumulated radiation dosage affects the functioning of the proposed network, and how redundancy and shielding can be profitably used to increase dependability.
UR - http://www.scopus.com/inward/record.url?scp=33847296750&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847296750&partnerID=8YFLogxK
U2 - 10.1109/QEST.2005.11
DO - 10.1109/QEST.2005.11
M3 - Conference contribution
AN - SCOPUS:33847296750
SN - 0769524273
SN - 9780769524276
T3 - QEST 2005 - Proceedings Second International Conference on the Quantitative Evaluation of SysTems
SP - 95
EP - 104
BT - QEST 2005 - Proceedings Second International Conference on the Quantitative Evaluation of SysTems
T2 - QEST 2005 - Second International Conference on the Quantitative Evaluation of SysTems
Y2 - 19 September 2005 through 22 September 2005
ER -