Kharchenko, V.Ponochovnyi, Y. L.Boyarchuk, A.Brezhnev, E.Поночовний, Юрій Леонідович2019-02-122019-02-122016Kharchenko, V., Ponochovnyi, Y., Boyarchuk, A., Brezhnev, E. Resilience assurance for software-based space systems with online patching: Two cases (2016) Advances in Intelligent Systems and Computing, 470, pp. 267-278.https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976433922&doi=10.1007%2f978-3-319-39639-2_23&partnerID=40&md5=0b18cff38a3ae79934ddd61b74c3cc4ehttps://dspace.pdau.edu.ua/handle/123456789/2077The paper discusses the problems of resilient software engineering for unmanned software-based space systems. Resilience is achieved by online patching of software upon emergence of defects providing a stable link to the ground control center. Based on the specifics of satellite orbits it offers two case models: a multifragment one—for systems with a continuous link from geostationary orbits; a multiphase one—for recurrent link from elliptic orbits. The results of the modeling offer the possibility to plan the values of the software initial failure rate and the period of preventive tests that would ensure required reliability and availability.enMarkov’s multifragment and multiphase modelsReliability and availability of software-based space systemsArticle10.1007/978-3-319-39639-2_23