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The Performance Simulation for the Global Navigation Satellite System (GNSS), which can be used in the performance simulation and evaluation analysis of the Service Volume Segment of the GNSS is a part of the critical algorithm test and system index analysis for the GNSS. In this article, the requirements and features of the GNSS are analyzed firstly, and the method of performance simulation for the GNSS is studied. Then, the system operation architecture and model integration architecture based on compassable simulation based on SimulationModel Portability (SMP2) is proposed. The system architecture consists of model design, development, integrating, executing and analysis, and can be used in simulation for different types of analyses such as those on visibility, coverage, geometry, Dilution of Precision (DOP), Navigation System Performance (NSP), and the availability and continuity of the Navigation System. Finally, the regional performance of the GALILEO Navigation Satellite System in China is analyzed based on the architecture and method, which can fit the features and satisfy the requirements of GNSS simulation.

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