Abstract
Systems Modeling Language (SysML) is a standard modeling language commonly used in the field of systems engineering. As one of the key elements in SysML, The “use case” not only serves as an important means for refining requirements but also drives the incremental design process of the entire model. Taking the design modeling of remote-sensing satellite systems as an example, this paper introduces an incremental iterative method based on use cases in the system model construction of spacecraft, which continuously evaluates architecture-related aspects such as requirement coverage, satisfaction degree, as well as the result of investment during production, manufacturing, and operational phases. At the same time, it realizes the digital collaborative system-level design of spacecraft.
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