Developing Operator-in-the-loop Timeline Requirements with a Case Study involving Non-cooperative Encounters with Unmanned Aircraft

Understanding human operator timeline requirements can inform system requirements. This research defines an approach involving the development of a timeline of events for the human operators and supporting technology in order to complete the activities of interest. The approach is intended for evaluating systems for which real-world data are sparse and the required data collection may be costly. Timeline requirements are expressed as relationships between events and parameters affecting the timing for events. To make predictions, actual timeline parameters can be estimated from the literature when available or new human subject experiments can be designed to obtain them. The method described is highlighted using an air traffic conflict case study of non-cooperative aircraft (aircraft that do not share state data).