Liu, Mingyan D.Baras, John S.Payne, Stephen M.Harrelson, HalThis paper describes a modeling and simulation framework for large hybridnetworks that include satellites, terrestrial wireless and mobile ad hocnetworks. The purpose of the simulation framework is to parallel the actualimplementation of a testbed network currently being constructed at ARL.The modeling framework uses the performance measures generated bythe simulation to analytically study larger scaled versions of thetestbed networks. The combination of the two methodologies allows thefeasibility of the testbed architecture's widespread implementation to bestudied without the associated costs of performing such experiments withactual equipment. Additionally, technological tradeoffs and interoperabilityissues can be studied so that informed decisions can be made about theimplementation of future military communication networks.<P><I>This paper has been published in the Proceedings of 2nd Annual ATIRP Conference(ATIRP'99). </I>en-USNetworkingModelingSimulationArchitecturePerformance AnalysisMilitary Networks,Technical Report