Abstract: In order to prevent accidents caused by civil aviation runway incursion, ADS-B technology was used to obtain real-time position of moving targets through information reported by ADS-B, and then it was determined whether there was a runway incursion according to positional relationship between moving targets and runway protection areas before an incursion alarm was generated. Secondly, runway conflict was identified and alarm was generated according to relative motion state, spatial distance and encounter time between moving targets. Finally, conflict scenarios and a two level alarm mechanism were constructed based on Geographic Information Systems to study runway incursion conflict detection and alarm system. The results show that when there are two moving targets in runway protection zones, the system will generate a runway incursion alarm. When moving targets are close to each other, spatial distance is smaller than minimum safety interval, encounter time is less than 30s, and the system then generates a conflict alarm.

Key words: automatic dependent surveillance- broadcast (ADS-B), runway incursion, conflict detection, conflict scenarios, alarm