Satellite overall parameter modeling and optimizing method based on SysML

The invention discloses a satellite overall parameter modeling and optimizing method based on SysML. The satellite overall parameter modeling and optimizing method is achieved through the following steps: (1) performing system modeling on a complex product from the four dimensions of requirement, function, structure and parameter based on the SysML; (2) establishing a three-level index system of an overall performance index (MoE), a performance index (MoP) and a technical performance index (TPM), and realizing mapping from user demands to system implementation end performance parameters; and (3) defining a design variable, constraining and optimizing an objective function and establishing an analysis model of each subject based on a parameter diagram of the SysML model library, and completing a parameter optimization task in the conceptual design stage of the remote sensing satellite by adopting a collaborative optimization method based on a SysML model and a genetic algorithm. According to the method, the pr