DAA Encounter Tool

For many aviation Detect and Avoid (DAA) safety studies, aircraft behavior and relative geometry is represented using encounter models, which are statistical models of how aircraft behave during close encounters. They are used to provide a realistic representation of the range of encounter flight dynamics where an aircraft DAA system would be likely to alert. Encounter models represent the encounter geometry, but also the aircraft behavior (accelerations) during the course of the encounter. Encounter models have been developed for many different manned operational contexts, but there are new considerations for unmanned aircraft operations including the lower operating altitudes and interactions with service providers and other users. For a complete overview of MIT Lincoln Laboratory’s encounter models and access to these models, please see https://github.com/Airspace-Encounter-Models/em-overview.