Abstract: The article proposes a method to develop HLA federates frame code based on Web service, which less need to consider the details of RTI and its bottom interface during simulation system development. In addition, there is a design of federates skeleton code generating utilities, by which the transformation from function call to service call can be easily made for interoperability. Neither do the federates developer have to take the differences of operating platform and developing environment into account when reusing the simulation resource while they are able to better realize the inter-operation among simulation application, and also realize cross platform resource sharing and interoperability and release the standardized interface to Internet.

Key words: HLA, Web services, framework code, federate