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The High Level Architecture (HLA) is a standard for distributed simulation, used when building a simulation for a larger purpose by combining (federating) several simulations. [1] The standard was developed in the 1990s under the leadership of the US Department of Defense [ 2 ] and was later transitioned to become an open international IEEE ...
It is a High Level Architecture (HLA) federation object model developed for distributed simulation applications of defense and security. [1] RPR FOM is listed in the NATO Modelling and Simulation Standards Profile AMSP-01. [2] The RPR FOM provides backwards compatibility with simulations using the Distributed Interactive Simulation (DIS) standard.
HLA was produced by the merger of the DIS protocol with the Aggregate Level Simulation Protocol (ALSP) designed by MITRE. There was a NATO standardisation agreement ( STANAG 4482, Standardised Information Technology Protocols for Distributed Interactive Simulation (DIS) , adopted in 1995) on DIS for modelling and simulation interoperability.
In simulation, run-time infrastructure (RTI) is a middleware that is required when implementing the High Level Architecture (HLA). RTI is the fundamental component of HLA. It provides a set of software services that are necessary to support federates to coordinate their operations and data exchange during a runtime execution. In other sense, it ...
IEEE 1516 High Level Architecture (HLA) for Modeling and Simulation; IEEE 1730 DSEEP Distributed Simulation Engineering and Execution Process; ISO/IEC 18023-1, SEDRIS—Part 1: Functional specification; ISO/IEC 18023-2, SEDRIS—Part 2: Abstract transmittal format; ISO/IEC 18023-3, SEDRIS—Part 3: Transmittal format binary encoding
The HLA CTL is an interpreted language that is available in an HLA program source file. An interpreter executes HLA CTL statements during the compiling of an HLA source file; hence the name compile-time language. The HLA CTL includes many control statements such as #IF, #WHILE, #FOR, #PRINT, an assignment statement and so on. One can also ...
In the mid 1990s, the Defense Modeling and Simulation Office (DMSO) sponsored the High Level Architecture (HLA) initiative. Designed to support and supplant both DIS and ALSP, investigation efforts were started to prototype an infrastructure capable of supporting these two disparate applications.
The Aggregate Level Simulation Protocol (ALSP) is a protocol and supporting software that enables simulations to interoperate with one another. Replaced by the High Level Architecture (simulation) (HLA), it was used by the US military to link analytic and training simulations.