01408nas a2200217   4500000000100000000000100001008004100002260000900043653005500052653000800107653002100115100001900136700002100155700001500176700001800191700001800209245004800227300001000275490000600285520089900291       1999                            d  c199910aFederation Development and Execution Process FEDEP10aHLA10aInteroperability1 aJudith Dahmann1 aMarnie Salisbury1 aPhil Barry1 aChris Turrell1 aPaul Blemberg00aHLA and Beyond: Interoperability Challenges  a25-420 v33 a<p>The High Level Architecture (HLA) provides a foundation for technical interoperability among disparate simulations, simulators, live systems, and simulation support tools. Achieving technical interoperability is a significant first step, but it is only part of the interoperability equation. This paper describes other interoperability challenges that federation designers and managers face. These challenges relate to the differences between modeling techniques employed by different simulation federates and the logical interpretation of data shared among federates. Using the Federation Development and Execution Process (FEDEP) as a guide, we identify the key areas where federation developers address simulation interoperability as they apply HLA to their domains particularly in battlespace simulation applications and cite potential sources of support for addressing these issues.</p>