Operational receiver autonomous integrity monitoring prediction system for air traffic management system

The Global Positioning System (GPS) is the key enabling technology for new air traffic management (ATM) systems. However, for civil aviation safety-of-life applications, the sensors of an ATM system using GPS must meet the required navigation performance, especially integrity. According to a new ATM system requirement, the receiver autonomous integrity monitoring (RAIM) prediction system (RPS) is an essential element for predicting GPS service quality fora72 h period. Many web-based RPSs have been developed and are operatedby civil aviation organizations aroundthe world. However, none can autonomously providethe GPS RAIM availability informationtothe new ATM system. Thus, this study develops an RPS that can be integrated with the new ATM system. Airport operators can obtain the forecast results directly from the ATM system for a specific flight-information region. The system integration is validated using three years of actual operation results of the new ATM system. An evaluation of its support for additional navigation satellite constellations is also made.