DAA stands for detect-and-avoid, and is also referred to as sense-and-avoid (SAA). It is a capability that allows UAVs (unmanned aerial vehicles) and drones to utilize data from cameras and sensors in order to successfully avoid collisions with other aircraft, buildings, and other obstacles and hazards. A robust DAA system is typically a prerequisite for drones operating in shared airspace or performing missions BVLOS (beyond visual line of sight).