On architectural analysis for nanosatellite flight software: Deconstructing ERMIS3 per 4+1

Le résumé fourni par la source

The engineering of flight software for nanosatellite missions presents significant challenges due to constrained on-board computational resources, stringent reliability requirements, and complex, mission-specific operational demands. Despite the advancements of the New Space era, detailed architectural documentation is rarely available to the research community: this paper addresses this gap by illustrating a rigorous architecture for the ERMIS3 mission, a nanosatellite designed for high-throughput laser optical downlinking and hyperspectral Earth observation. Our architectural perspective is undertaken through the lens of Kruchten’s 4 + 1 architectural view model. By deconstructing the system into its physical, logical, development, process, and scenario views, we provide an in-depth analysis of the architectural decisions, trade-offs, and design rationales that ensure the system satisfies critical design drivers of deployability, integrability, modifiability, and testability. We further position the design presented over architectural variation points elicited across more than 30 surveyed missions, categorizing the evolution of FSW frameworks and styles. This experience report intends to advocate rigorous software architecture principles in space software engineering, by sharing insights and providing detailed architectural documentation with the overall goal of advancing a novel research agenda for dependable and reusable flight software.

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