TCAS algorithm for general aviation based on ADS-B

Chin E. Lin, Tzu Wen Hung, Hsin Yuan Chen

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


This paper proposes a new traffic alert and collision avoidance system (TCAS) for general aviation (GA) that uses automatic dependent surveillance-broadcast (ADS-B). The proposed GA-TCAS alerts the pilot of upcoming potential conflicts, which are becoming increasingly common as the number of GA movements increases. Conflict detection and avoidance uses the ADS-B and GA maneuvers. The algorithm selects the angle according to the intruder's heading and position in order to reduce the nuisance alerts. The detection algorithm has three stages: proximate advisory, traffic advisory, and resolution advisory. The relationship between the turn angle and the horizontal miss distance (HMD) are calculated to determine a resolution when an intruder enters the separation bubble. Using the encounter models for visual flight rule (VFR) to evaluate the performance of this TCAS algorithm, the resolution should follow the VFR and prioritize in different situations. In flight simulations, the proposed GA-TCAS is tested using real ultralight flight data. The system performance is demonstrated using flight trajectories from conflict detection and resolution.

Original languageEnglish
Pages (from-to)1569-1591
Number of pages23
JournalProceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Issue number9
Publication statusPublished - 2016 Jul 1

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering


Dive into the research topics of 'TCAS algorithm for general aviation based on ADS-B'. Together they form a unique fingerprint.

Cite this