Ralf Heidger joined DFS Deutsche Flugsicherung GmbH 2001, starting as head of the software development department for tower control and fallback systems in the system house of DFS. Since then, he has published ca. 30 papers on ATC, ATM, and now also on UTM software, architecture, on tracking, sensor data processing with Kalman filters and on multisensor fusion.
2001 – 2016 he established and headed a group of 49 software engineers, mathematicians, software testers, and documentalists to develop and maintain the multisensor data fusion system PHOENIX and the flightplan data processing system TFDPS/SHOWTIME that are deployed in all Tower Control units in Germany, and as fallback systems in all Control Centers of the country. He was responsible for about 30 projects of ATC and ATM software development in Germany and for international customers such as CISCEA Brazil, Nav Canada, Nav Portugal, ENAV Italy, Royal Thai Airforce, and LVNL Netherlands.
2016 he joined the strategic department for Corporate Development (VE), where he became member of the Issue Management UAS, there responsible for all technical issues, specifically UTM, UAS, and its relations to ATM. He represents DFS in associations like GUTMA, EuroCAE, UAV DACH working groups, and others. The Issue Management UAS elaborates the DFS strategy for UAS and UTM. 2017 it was turned into a new department, VE/U, where he is responsible for the technical issues, e.g. the development of UTM, which also uses PHOENIX.