Stochastic Capability Models for Degrading Satellite Constellations - Couverture souple

Gulyas, Cole W

Couverture souple

ISBN 10 : 1288405596 ISBN 13 : 9781288405596

Editeur : BiblioBazaar, LLC, 2012

Synopsis

This thesis proposes and analyzes a new measure of functional capability for satellite constellations that incorporates the instantaneous availability and mission effectiveness of individual satellites. The capability measure yields a continuous score between zero and one accounting for the degree to which the constellation meets operational requirements. The measure is computed from an average of satellite capabilities, composed of the product of the satellite's instantaneous availability and value score. Instantaneous availability is acquired by modeling the satellite degradation status as either a time-homogenous, continuous-time Markov chain (CTMC) if it possesses functions with exponential lifetime distributions, or as a time-homogenous, semi-Markov process (SMP) if the function lifetime distributions are not exponential. The satellite value score represents the individual satellite's contribution to the overall constellation mission and is obtained using multi-attribute value theory. For illustrative purposes, analytical results were compared with those obtained via the Monte Carlo method and were found to be indistinguishable with substantially less computational effort.

Détails de l'édition

• Éditeur: BiblioBazaar, LLC
• Date d'édition: 2012
• Langue: anglais
• ISBN 10: 1288405596
• ISBN 13: 9781288405596
• Reliure: Broché
• Nombre de pages: 132
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible