As one of the cores of the new-generation civil aviation transportation system, China’s new-generation air traffic management system (CNGATM) includes various contents, such as track-based operation (TBO), which has attracted more and more scholars’ attention. Traffic management for all these periods is based on the aircraft’s four-dimensional (4D) trajectory. Based on the BADA database, this paper establishes a track simulation model, obtains the flight track through simulation experiments, and analyzes the characteristics of the track. Combined with the flight dynamics model, through the study of the four-dimensional (4D) trajectory of the aircraft, the uncertainty of the aircraft path is significantly reduced, and the utilization and safety of airspace and airport resources are improved.

This paper provides an overview of cognitive radio technology and its applications in the field of civil aviation. Cognitive radio technology is a relatively new and emerging field that allows for dynamic spectrum access and efficient use of spectrum resources. In the context of civil aviation, cognitive radio technology has the potential to enable more efficient use of the limited radio spectrum available for communication and navigation purposes. This paper examines the current state of cognitive radio technology, including ongoing research and development efforts, regulatory issues, and potential challenges to widespread adoption. The potential applications of cognitive radio technology in civil aviation are also explored, including improved spectrum utilization, increased safety and security, and enhanced situational awareness. Finally, the paper concludes with a discussion of future research directions and the potential impact of cognitive radio technology on the future of civil aviation. It is hoped that this paper will serve as a useful resource for researchers, engineers, and policy makers interested in the emerging field of cognitive radio technology and its potential applications in the field of civil aviation.