GNSS vulnerability assessment method based on ARAIM user algorithm

Satellite-based communications, navigation, surveillance and air traffic management systems (CNS/ATM) are extremely promising in future use because of its great advantages in coverage and accuracy, yet can be seriously disabled by Global Navigation Satellite System (GNSS) vulnerability factors such as satellite anomaly, ionospheric perturbation, and electromagnetic interference. To improve the reliability of CNS/ATM system, this paper focuses on the influence of GNSS vulnerability on satellite-based navigation. Vulnerability of an airline is assessed based on the combination of vulnerability of each airspace, utilizing Advanced RAIM (ARAIM) user algorithm. Vulnerability assessment results of single airline are presented.