Communication, Navigation and Surveillance Performance Criteria for Safety-Critical Avionic Systems

Abstract

The demand for improved safety, integrity and efficiency due to the rapid expansion of global air transport and the growing concern for environmental sustainability issues poses significant challenges on the development of future Communication, Navigation and Surveillance/Air Traffic Management (CNS/ATM) and Avionics (CNS+A) systems. High-integrity, highreliability and all-weather services are required in the context of four dimensional Trajectory Based Operations / Intent Based Operations (TBO/IBO). The Next Generation Flight Management Systems (NG-FMS), which are the primary automated navigation and guidance services in manned aircraft and Remotely-Piloted Aircraft System (RPAS) will have to address these challenges. After describing the key system architectures, the mathematical models for trajectory generation and CNS performance criteria evaluation are presented. An evaluation of the proposed concepts and methodologies is accomplished by simulation. The results demonstrate the functional capability of the avionics and ATM systems to generate cost-effective trajectory profiles satisfying both operational and environmental requirements, as well as satisfying the CNS performance criteria.