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MSG-052 Knowledge Network for Federation Architecture and Design

ABSTRACT: Development of distributed simulations is a complex process requiring extensive experience, in-depth knowledge and a certain skills set for the Architecture, Design, development and systems integration required for a federation to meet its operational, functional and technical requirements. Federation architecture and design is the blueprint that forms the basis for federation-wide agreements on how to conceive and build a federation. Architecture and design issues are continuously being addressed during federation development. Knowledge of “good design” is gained through hands-on experience, trial-and-error and experimentation. This kind of knowledge however, is seldom reused and rarely shared in an effective way. This paper presents an ongoing effort conducted by MSG-052 “Knowledge Network for Federation Architecture and Design” within the NATO Research and Technology Organisation (NATO/RTO) Modelling and Simulation group (NMSG).

The main objective of MSG-052 is to initiate a “Knowledge Network” to promote development and sharing of information and knowledge about common federation architecture and design issues among NATO/PfP (Partnership for Peace) countries. By Knowledge Network, we envision a combination of a Community of Practice (CoP), various organisations and Knowledge Bases.

A CoP, consisting of federation development experts from the NATO/PfP nations, will foster the development of stateof- the-art federation architecture and design solutions, and provide a Knowledge Base for the Modelling and Simulation (M&S) community as a whole. As part of the work, existing structures and tools for knowledge capture,
management and utilization will be explored, refined and used when appropriate; for instance the work previously done under MSG-027 PATHFINDER Integration Environment provides lessons learned that could benefit this group.

The paper will explore the concept of a Community of Practice and reveal the ideas and findings within the MSG-052 Management Group concerning ways of establishing and managing a Federation Architecture and Design CoP. It will also offer several views on the concept of operations for a collaborative effort, combining voluntary contributions
as well as assigned tasks. Amongst the preliminary findings was the notion of a Wiki-based Collaborative Environment in which a large portion of our work is conducted and which also represents our current Knowledge Base. Finally, we present some of our main challenges and vision for future work.

Authors: Gunnar Öhlund, Björn Löfstrand, Fawzi Hassaine
Publication: Proceedings of 2007 Fall Simulation Interoperability Workshop, 07F-SIW-024, Simulation Interoperability Standards Organization, September 2007.

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Making Your BOMs and FOM Modules Play Together

ABSTRACT: Proper modeling is key in order to achieve effective interoperability between simulation systems. Base Object Models (BOMs) is a SISO standard that allows simulation developers to create object models that form a base or interoperability, even though the participating systems to be used have not yet been selected. The BOM concept is based on the assumption that piece-parts of models, simulations, and federations can be extracted and reused as modeling building-blocks or components. Special attention is paid to sequences of events that take place between simulation elements.

An important part of the High Level Architecture standard is the Federation Object Model (FOM) that describes the data to be exchanged at runtime. The upcoming version of HLA, named “HLA Evolved”, allows FOMs to be divided into smaller, reusable components called FOM modules.

BOMs have unique capabilities in the earlier phases of FEDEP since they enable reuse across federations and have little dependency on the exact systems that are used in any particular federation. FOM Modules on the other hand have unique capabilities during the later phases since they can provide plug-and-play reuse. The greatest benefit is achieved if they are used together. BOMs and Modular FOMs also share a number of description formats that enables a smooth transition from BOMs to FOM Modules.

This paper describes in detail how BOMs and Modular FOMs can be used together for optimal reuse and interoperability from the early modeling stages to the final integration and execution phases.

Authors: Björn Möller, Paul Gustavson, Bob Lutz, Björn Löfstrand
Publication: Proceedings of 2007 Fall Simulation Interoperability Workshop, 07F-SIW-069, Simulation Interoperability Standards Organization, September 2007.

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