Virtual reality (VR) is a simulated experience that employs pose tracking and 3D near-eye displays to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment, education and business. Other distinct types of VR-style technology include augmented reality and mixed reality, sometimes referred to as extended reality or XR, although definitions are currently changing due to the nascence of the industry.
A simulation is the imitation of the operation of a real-world process or system over time. Simulations require the use of models; the model represents the key characteristics or behaviors of the selected system or process, whereas the simulation represents the evolution of the model over time. Often, computers are used to execute the simulation.
An application program is a computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users. Word processors, media players, and accounting software are examples. The collective noun "application software" refers to all applications collectively. The other principal classifications of software are system software, relating to the operation of the computer, and utility software ("utilities").
Mixed reality (MR) is a term used to describe the merging of a real-world environment and a computer-generated one. Physical and virtual objects may co-exist in mixed reality environments and interact in real time.
SIMNET was a wide area network with vehicle simulators and displays for real-time distributed combat simulation: tanks, helicopters and airplanes in a virtual battlefield. SIMNET was developed for and used by the United States military. SIMNET development began in the mid-1980s, was fielded starting in 1987, and was used for training until successor programs came online well into the 1990s.
The U.S. Army Combat Capabilities Development Command Army Research Laboratory is the U.S. Army's foundational research laboratory. ARL is headquartered at the Adelphi Laboratory Center (ALC) in Adelphi, Maryland. Its largest single site is at Aberdeen Proving Ground, Maryland. Other major ARL locations include Research Triangle Park, North Carolina, White Sands Missile Range, New Mexico, Graces Quarters, Maryland, and NASA's Glenn Research Center, Ohio and Langley Research Center, Virginia. ARL also has regional sites in Playa Vista, California, Chicago, Austin, TX, and Boston.
Virtual Heroes, Inc. is a developer of serious games in Raleigh, North Carolina, United States. It was founded in 2004.
Immersion into virtual reality (VR) is a perception of being physically present in a non-physical world. The perception is created by surrounding the user of the VR system in images, sound or other stimuli that provide an engrossing total environment.
OpenSimulator is an open-source server platform originally launched in 2007 for hosting virtual worlds and metaverse environments. It is largely compatible with the virtual world Second Life but full compatibility is not a design goal.
Open Cobalt is a free and open-source software platform for constructing, accessing, and sharing virtual worlds both on local area networks or across the Internet, with no need for centralized servers.
A dynamic terrain is the representation of terrain together with the capability for modification during a simulation.
Live, Virtual, & Constructive (LVC) Simulation is a broadly used taxonomy for classifying Modeling and Simulation (M&S). However, categorizing a simulation as a live, virtual, or constructive environment is problematic since there is no clear division among these categories. The degree of human participation in a simulation is infinitely variable, as is the degree of equipment realism. The categorization of simulations also lacks a category for simulated people working real equipment.
The United States Army Simulation and Training Technology Center (STTC) provides the United States Department of Defense and United States Department of Homeland Security, with applied research to develop simulation technologies, build on current simulation knowledge, and understand system of systems environments where human, agent, and teams are involved.
Virtual worlds are playing an increasingly important role in education, especially in language learning. By March 2007 it was estimated that over 200 universities or academic institutions were involved in Second Life. Joe Miller, Linden Lab Vice President of Platform and Technology Development, claimed in 2009 that "Language learning is the most common education-based activity in Second Life". Many mainstream language institutes and private language schools are now using 3D virtual environments to support language learning.
Mounted Warfare TestBed (MWTB) at Fort Knox, Kentucky, was the premier site for distributed simulation experiments in the US Army for over 20 years. It used simulation systems, including fully manned virtual simulators and computer-generated forces, to perform experiments that examined current and future weapon systems, concepts, and tactics.
The ADMS is an emergency and disaster management training simulation system designed to train incident commanders, first responders, and incident command teams in a real-time, interactive virtual reality environment. ADMS was first introduced by Environmental Tectonics Corporation (ETCC:US) in 1992. The development of ADMS was in response to the crash of British Airtours Flight 28M at the Manchester airport in 1985, in which 55 people died. Following the accident research indicated that first responder training should include realistic scenarios. The first ADMS system was produced for the UK Ministry of Defence, and delivered to Royal Air Force's (RAF) Manston Facility. Since its inception, ADMS has evolved into a modular, expandable disaster simulation platform, with systems in use worldwide.
The virtual world framework (VWF) is a means to connect robust 3D, immersive, entities with other entities, virtual worlds, content and users via web browsers. It provides the ability for client-server programs to be delivered in a lightweight manner via web browsers, and provides synchronization for multiple users to interact with common objects and environments. For example, using VWF, a developer can take video lesson plans, component objects and avatars and successfully insert them into an existing virtual or created landscape, interacting with the native objects and users via a VWF interface.
MAK Technologies, formerly doing business as VT MAK, Inc. is a software company based in Cambridge, Massachusetts that provides commercial off-the-shelf (COTS) modeling and simulation software. The company develops and sells software for distributed simulations that system integrators, governments, and research institutions use to build and populate 3D simulated environments. Users include medical, aerospace, defense, and transportation industries. In addition to offering COTS software, MAK provides the following services: simulation content creation, software customization, interoperability, research and development, and training.
The Augmented Reality Sandtable (ARES) is an interactive, digital sand table that uses augmented reality (AR) technology to create a 3D battlespace map. It was developed by the Human Research and Engineering Directorate (HRED) at the Army Research Laboratory (ARL) to combine the positive aspects of traditional military sand tables with the latest digital technologies to better support soldier training and offer new possibilities of learning. It uses a projector to display a topographical map on top of the sand in a regular sandbox as well as a motion sensor that keeps track of changes in the layout of the sand to appropriately adjust the computer-generated terrain display.
The McKenna Military Operations in Urban Terrain (MOUT) site was an urban village built by Army engineers for urban training of soldiers on a US Army base in Fort Benning, Georgia. The site belongs to the Soldier Battlelab and was primarily used for live, virtual and constructive experimentation on soldier systems, weapons, and equipment. The McKenna MOUT site was approximately 200 meters square, and included 15 buildings resembling a European village. There was a church, small houses, domestic residences and office-style buildings.
