Glossary of Terms & Acronyms
| 8AFA | Waveform Synthesizer - previously called DSP |
| AAR | After Action Review |
| AATC | Automated Air Traffic Control |
| ABCCC | Airborne Battlefield Command and Control Center |
| ACBL | Audio Cable |
| ACE | Audio Communications Environment |
| ACENet | Audio Communications Environment Network |
| ACE-RIU | ACE-Remote Interface Unit |
| ACU | ACE Communication Unit |
| ADF | Automatic Direction Finder, navigation aid |
| AFB | Air Force Base |
| AFRL | Air Force Research Lab |
| AFV | Armored Fighting Vehicle |
| AGC | Automatic Gain Control |
| AI | 16/32 Channel Analog Input board (discontinued) |
| AIU | Audio Interface Unit |
| ALE | Automatic Link Establishment |
| AMS | AWACS Modeling & Simulation system |
| ASR | Automatic Speech Recognition |
| ATC | Air Traffic Control; Air Training Command |
| ATIS | Air Traffic Information Systems, Automatic Terminal Information Service |
| ATP | Acceptance Test Procedure |
| ATRC | AEGIS Training and Readiness Center |
| AVCATT-A | Aviation Combined Arms Tactical Trainer - Aviation Reconfigurable Manned Simulator |
| AWACS | Airborne Warning and Control System |
| AWE | Army Warfighting Experiment |
| BFO | Beat Frequency Oscillator |
| BSC | Battle Simulation Center |
| C2V | Command & Control Vehicle |
| CAA | Civil Aeronautics Administration |
| CATT | Combined Arms Tactical Trainer |
| CCTT | Close Combat Tactical Trainer |
| CDR | Critical Design Review |
| CGF | Computer Generated Force |
| COMSEC | Communications Security |
| COTS | Commercial Off-The-Shelf |
| CPU | Central Processing Unit |
| CRR | Customer Repair Return |
| CSMET | Crew Station Mission Equipment Trainer |
| CVSD | Continuous Variable Slope Delta; a type of audio compression |
| DACS | Digital Audio Communications System |
| DAMA | Demand Assigned Multiple Access |
| DASA | Demand Assigned Single Access |
| DDI | Distributed Digital Interface |
| DDM | Distributed Data Management |
| DEM | Digital Elevation Model |
| DHCP | Dynamic Host Configuration Protocol |
| DI | 16 Channel Digital Input Board |
| DI/DO | 8In/8Out Digital board |
| DIS | Distributed Interactive Simulation |
| DISA | Defense Information Systems Agency |
| DME | Distance Measuring Equipment, navigation aid |
| DMO | Data Management Order |
| DMSO | Defense Modeling and Simulation Office |
| DMT | Distributed Mission Training |
| DODD | Department of Defense Directive |
| DR | Discrepancy Report |
| DRED | Daily Readiness Test |
| DSP | Digital Signal Processor |
| DTED | Digital Terrain Elevation Data |
| EASA | European Aviation Safety Agency |
| eQTG | Electronic Qualification Test Guide |
| EW | Electronic Warfare |
| FAA | Federal Aviation Administration |
| FFS | Full Flight Simulator |
| FOB | Freight On Board |
| FOM | Federation Object Model |
| FSTD | Flight Simulation Training Devices |
| FTD | Flight Training Devices |
| FTX | Field Training Exercise |
| GCA | Ground Control Approach |
| GUI | Graphical User Interface |
| HF | High Frequency |
| HHT | Hand Held Terminal |
| HLA | High Level Architecture |
| HQ | Have Quick |
| HRTF | Head Related Transfer Function; 3D Audio reference |
| I/ITSEC | Interservice/Industry Training, Simulation and Education Conference; tradeshow (Orlando, FL) |
| I/O | Input/Output |
| IASE | Information Assurance Support Environment |
| ICAO | International Civil Aviation Organization |
| ICD | Interface Control Document |
| ICS | Intercom Switching |
| IDM | Integrated Data Modem |
| IETF | Internet Engineering Task Force |
| IFF | Identify Friend / Foe |
| ILS | Instrument Landing System, navigation aid |
| IOS | Instructor Operator Station |
| IWG | International Working Group |
| JAA | Joint Aviation Authority |
| JANUS | an interactive, entity-based, tactical simulation used to train at Brigade and below (Battle-Focused Training) |
| JCSAR | Joint Combat Search and Rescue |
| JEFX | Joint Expeditionary Force Experiment |
| JNTF | Joint National Test Facility |
| JPATS | Joint Primary Aircraft Training System |
| JRTC | Joint Readiness Training Center |
| JSAF | Joint Semi-Automated Forces |
| JSF | Joint Strike Fighter |
| JSTARS | Joint Surveillance and Target Attack Radar System |
| JTASC | Joint Training Analysis and Simulation Center |
| JTDL | Joint Tactical Data Link |
| JTIDS | Joint Tactical Information Distribution System |
| JTMD | Joint Theater Missile Defense |
| JTMDAO | Joint Theater Missile Defense Attack Operation |
| LAN | Local Area Network |
| LOS | Line of Sight |
| MB | Model Builder software |
| MBV | Model Builder Visual software |
| MCAS | Marine Corps Air Station |
| MCASMP | Marine Corps Aviation Simulator Master Plan |
| MLU | Mid-Life Update |
| MODSAF | Modular Semi-Automated Forces |
| MPL | Multi-Crew Pilot License |
| MRD | Mission Rehearsal Device |
| MTBF | Mean Time Between Failure |
| Model | Collection of Objects constructed by user using the MB application tool to build sound and/or communications simulation of their application. Models are run within the MB application environment on the DACS. Each model is associated with a specific DSP card. One or more Models may reside on DACS depending on the hardware configuration. Models can interact locally to the DACS or across the network with other DACS models. |
| Model Server | Runs state machine software |
| MuLaw | G711 ITU Standard, a type of audio compression |
| Multicast Router | Device that bridges specific multicast address between different interfaces |
| NAS | Naval Air Station |
| NASMP | Naval Aviation Simulation Master Plan |
| NAWC/AD | Naval Air Warfare Center, Aircraft Division |
| NDA | Non-Disclosure Agreement |
| NDB | Non-Directional Beacon, navigation aid |
| NDIA | National Defense Industrial Association |
| NIAP | National Information Assurance Partnership |
| NOTAM | Notice to Airmen |
| NPG | Network Participation Group |
| NSA | National Security Agency |
| NSTISSP | National Security Telecommunications and Information Systems Security Policy |
| NSWC | Naval Surface Warfare Center |
| NSWCDD | Naval Surface Warfare Center Dahlgren Division |
| NTP | Network Time Protocol |
| NTSA | National Training and Simulation Association |
| OFT | Operational Flight Trainer |
| OID | Object Identifiers |
| OneSAF | a composable, next generation Computer Generated Force |
| OMDT | Object Model Development Tool |
| OML | Object Model Library |
| OMT | Object Model Template |
| ORTT | Operations Room Team Trainer |
| PAM | Pluggable Authentication Module |
| PCA | Program Configuration Audit |
| PC'ver | ASTi's DIS radio and intercom application for Windows |
| PDI | Potential Discrepancy Item |
| PDR | Preliminary Design Review |
| PDU | Protocol Data Unit |
| PEO STRI | Program Executive Office - Simulation, Training and Instrumentation (formerly STRICOM) |
| PIU | Panel Interface Unit |
| PRF | Pulse Repetition Frequency |
| PRI | Pulse Repetition Interval |
| PTT |
Part Task Trainer Push To Talk (switch) |
| RAeS | Royal Aeronautical Society |
| RHEL | Red Hat Enterprise Linux |
| RID | RTI Initialization Data Editor |
| RIU | Remote Interface Unit |
| RMA | Return Material Authorization |
| RPR FOM | Real-Time Platform Reference Federation Object Model |
| RMS | Browser-based Local & Remote DACS Systems Management: The ASTi Remote Management System (RMS) gives the user a Gods-eye view and control of all ASTi devices and activity on the exercise-wide network via a standard web browser. |
| ROM | Rough Order of Magnitude |
| RTI | Runtime Infrastructure |
| RTI NG | RTI Next Generation (After Version 1.3) |
| RWR | Radar Warning Receiver |
| SAGIS | Special Operations Air Ground Interface Simulator |
| SED | Shippers Export Declaration |
| SFTP | Secure File Transfer |
| SHINCOM | SHips INternal COMmunications |
| SimTecT | Simulation Technology and Training; tradeshow (Australia) |
| SINCGARS | Single-channel Ground and Airborne Radio System |
| SISO | Simulation Interoperability Standards Organization |
| SNARE | System iNtrusion Analysis |
| SNMP | Simple Network Management Protocol |
| SOF | Special Operation Force |
| SOM | Simulation Object Model |
| SOW | Statement of Work |
| SRR | Security Readiness Review |
| STIGs | Security Technical Implementation Guides |
| STRICOM | Simulation Training and Instrumentation Command (see PEO STRI) |
| STOW | Synthetic Theater of War |
| Synapse | Plug-and-play link between live field radios and virtual communications networks |
| TACAN | Tactical Air Navigation |
| TACCSF | Theater Aerospace Command and Control Simulation Facility |
| TACOM | Tank-automotive & Armaments Command |
| TADIL | Tactical Digital Information Link |
| TDM | Time Division Multiplex |
| TDM Ring | Connection from DACS to RIUs and back to DACS; no longer than 300 feet total |
| Telestra | Native HLA radio simulation & communications module |
| THAAD | Theater High Altitude Air Defense |
| Tort | Tactical Operational Readiness Trainer |
| TRANSEC | Transmission Security |
| Ts&Cs | Terms and Conditions |
| UDP | User Datagram Protocol |
| UHF | Ultra High Frequency |
| UTD | Unit Training Device |
| VHF | Very High Frequency |
| VoIP | Voice over IP |
| VOR | VHF omnidirectional range, navigation aid |
| VOX | Voice activated transmissions |
| VRR | Vendor Repair Return |
| WAN | Wide Area Network |
| WARSIM | Warfighters' Simulation |
| WST | Weapons System Trainer |
| XDR | External Data Representation |
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