Performance Analysis of Advanced RAIM with the Inclusion of BeiDou

The BeiDou Navigation Satellite System, also named BDS for short, is China's second-generation satellite navigation system that will be capable of providing all-weather and seamless positioning, navigation and timing services to users on a continuous worldwide basis. As a GNSS constellation, BDS is being developed and operated by China and will be compatible with other navigation satellite systems worldwide once completed. However, to satisfy the rigorous requirement of civil aviation navigation, more augmentation methods are necessary to improve the performance of BDS. As a method of aircraft based augmented system (ABAS), Receiver Autonomous Integrity Monitoring (RAIM) is still the most prevalent use of satellite navigation system in aircraft today. Airborne GNSS RAIM can monitor the real-time navigation performance using redundant navigation information and it is the last vital key link related to life safety when applying in civil aviation. As the development and implement of BDS, we can use multi-constellation for advanced Receiver Autonomous Integrity Monitoring (ARAIM) on the basis of interoperability between BDS and GPS. Advanced RAIM with multi-constellation has greatly improved the number and geometry of satellites in view which will lead to an BDS.