Ulrich Klein

Internet-based simulation using off-the-shelf simulation tools and HLA

The United States Department of Defenses High Level Architecture for Modeling and Simulation (HLA) provides a standardized interface for distributed simulations. The recent advent of HLA has greatly increased interest in the use of distributed, interoperable simulation model components. To date, most models using HLA have been developed in conventional high-level languages (primarily C++). This paper presents approaches by which HLA can be used to interconnect distributed model components which are developed using commercially available, off-the-shelf simulation software. The requirements imposed on such simulation software by HLA are discussed, and four approaches for adapting such software for use with HLA are presented. A generalized, model-independent approach which was developed for SLX is presented.

Traffic simulation based on the high level architecture

Interoperability and reusability are features supported by the new High Level Architecture for Modeling and Simulation (HLA). While the traditional approach of monolithic traffic simulation modeling has proven to be successful, distributed traffic simulations gain more attention. The first part of the paper describes our work with distributed traffic simulation based on the High Level Architecture and the lessons learned from enhancing classic simulation and animation tools for HLA and our first HLA prototypes. The second part elaborates on the additional flexibility that architectures for distributed simulation offer, focusing on the dynamic integration of information relevant to the overall simulation into the dynamic event space. A promising outlook concludes the paper.