Operation scenarios are a key part in the development of a ground segment to prepare for mission operations. They describe the work/data flows, tools, people, timelines, and facilities needed to perform a specific operations objective and include both ground segment and flight segment tasks. These scenarios can then be used as the starting point for the actual operational procedures and processes. Scenarios are also used to ensure requirements are complete and used in the Verification & Validation program to help define testing and maximize Test-Like-You-Fly procedures. Because of this, operation scenarios are needed early in the mission development cycle as they provide the baseline to work towards in integration and test. For a given mission, there are five basic scenarios: Activity Planning, Uplink Build, Routine Contact, Downlink and Science Data Processing. Nomenclature CubeSat = A U-class spacecraft. FlatSat = The collective hardware, firmware and software required to provide a simulated Observatory environment for the purpose of flight software development, integration & test procedure development, and operational scenario testing and training. Observatory = The integrated spacecraft and science instruments including all on-board consumables.
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