The Frequentis Orthogon 4D (O4D) Trajectory Prediction has a proven track record of more than 20 years in providing reliable trajectory predictions in air traffic management (ATM). O4D supports the ATM system by predicting flight profiles. It is a core component of all worldwide installations of the Frequentis Arrival Manager (AMAN) and deployed within the Flight Data Processing (FDP) and the Medium-Term Conflict Detection (MTCD) systems of skyguide. 

The transition towards trajectory-based operations (TBO) is at the core of ATM modernisation programs. Predictability, collaboration and flexibility remain key elements in meeting operational needs and supporting innovations, and new models of ATM data service provision will facilitate this. O4D contributes to air traffic flow management (ATFM) and air traffic control (ATC) as well as the coordination with airspace users to achieve optimum trajectories (trajectory management). 

Traffic optimisation solutions, such as the AMAN, leverage the consideration of onboard trajectory predictions and airspace user preferences, e.g. provided by the Flight Management System (FMS) via Extended Projected Profile (EPP) downlinks. Using the O4D capabilities, optimal target times are shared between all concerned stakeholders, even in cross-border environments, allowing for early trajectory adjustments where needed. 

Leveraging our research and development activities, e.g. within the SESAR programme, the solution is enhanced by using artificial intelligence (AI) techniques, specifically for analysing flight data to further minimise deviations between predicted and actual trajectories.