The new trend analysis plan for cosmo-skymed ground and ILS&ops segments

In the last decade ASI (Agenzia Spaziale Italiana) invested significant effort in Earth Observation (EO) with radar satellites thanks to the realization of COSMO-SkyMed (Constellation of Small satellites for Mediterranean basin Observation), a constellation of four satellites in X-Band. COSMO-SkyMed is an Italian Earth Observation Dual-Use Space System conceived for global environmental monitoring, scientific and commercial purposes and strategic applications (Defence and National Security). It is fully operational starting from 2011. To support this operational management phase a Trend Analysis activity has been introduced several years ago and, also thanks to several Lesson Learnt and to the availability of new and more powerful SW tools, it has been refined, upgraded and a new plan will be applied in the next months. The main aim of Trend Analysis techniques is to support the decision making process to analyse the system status and consequently: Maintain the system fully-operative identifying particular patterns suggesting some corrective actions to avoid faults Grant the nominal behaviour of the system identifying some hidden degradation trends needing to be corrected Ensure that the system continues to meet the users' needs, that can evolve Most of these activities are identified as "Conditional Based Management" (CBM). A classical CBM system is based on periodical measures performed on physical characteristics (e.g. temperature, fluid levels, etc.). Depending on their results some corrective actions are planned on system components. Most of the measures periodically performed on the COSMO-SkyMed Space Segment are used for the CBM and are very important to check the status of the satellites and to plan preventive actions. However most of the Ground and ILS&OPS (Integrated Logistic Support and Operations) Segments subsystems, except the antennas, are not suitable for the classical CBM. So the Trend Analysis activity on these two Segments has to analyse circumstances that cannot be preliminarily defined and that can be solved or mitigated only with not preliminary defined recovery actions. In this paper the new Trend Analysis Plan is described, with particular attention to the part referring to the Ground and ILS&OPS Segments, the more complex one. Copyright © 2015 by the American Institute Federation of Aeronautics and Astronautics. Inc. All rights reserved.