Research on the HLA-based simulation method of the operational availability for the smallest mission unit

In the process of the equipments used, operational availability (A o) is the common top-level parameter for the operational readiness. In the Joint Operation Equipment Support Concept Simulation and Evaluation System (JOESCSES) based on HLA, the smallest mission unit (SMU)'s operational availability is one of the general parameters. Firstly, the paper introduce the JOESCSES. Then research the concept, usage mission model and operational availability of the smallest mission unit. And research the status update model and simulation flow of accumulation workload time of the SMU. And simulation calculate of the SMU's A o. Finally, in the JOESCSES, the method which be created in this paper be proved to be credible and availability.