![]() ![]() “We developed algorithms to perturb DEM and GIS data in user-configurable ways that generate synthetic environments,” Auchter said. The first round of research incorporated digital elevation models (DEMs) from aerial scans conducted by the San Antonio River Authority and other government agencies. It builds scenes with elevation maps captured from geographic information system (GIS) data and graphically renders topographical features in 3D. SwRI’s simulator consists of a graphics engine, dynamics engine, vehicle modeling tools, vehicle terrain interaction models and plug-ins to communicate with an autonomy software stack. “Our Simulation Scene Adjustment Tool allows a user to push UGVs and AVs to the limit and explore ‘what if?’ scenarios in a variety of simulated environments more rapidly, safely and cost effectively than if all this testing was done in the real world.” “Simulation with the digital twin is crucial for UGV testing and development,” said Joe Auchter, an engineer who led the research for SwRI’s Intelligent Systems Division. The simulator also creates a digital twin, a virtual representation of an automated vehicle that looks and behaves like its counterpart in the real world. The project developed a “Simulation Scene Adjustment Tool” with a 3D video game-style interface to test virtual ground vehicles on off-road terrain. SwRI used internal funding to develop a “pipeline” of technology with custom algorithms, off-the-shelf software, open-source tools and public map data. Department of Defense demands for modeling and simulation tools to help advance the development of unmanned ground vehicles (UGVs), the military term for automated or autonomous vehicles. A simulated environment, or a 3D “software loop,” supports evaluations of an infinite number of scenarios that would be cost-prohibitive to test in the real world. The research expands SwRI’s investment into software-in-the-loop solutions to test connected and automated vehicles (CAVs) in scenarios ranging from congested roadways to off-road terrain. April 25, 2023 - Southwest Research Institute (SwRI) has created a 3D simulation tool to test automated vehicles in virtual off-road environments modeled after real-world conditions. ![]()
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