Research on Outdoor-Field Flight Evaluation Methods for Anti-jamming Capability of Satellite Navigation in Unmanned Aerial Systems

Unmanned Aerial Systems (UAS) have experienced rapid development and gained broad application worldwide. Many types of UAS primarily rely on satellite navigation for route navigation, takeoff/landing guidance and other operations. With the widespread use of various electronic devices, the complexity of the spatial electromagnetic environment is increasing significantly. Consequently, the ability to resist both intentional and unintentional interference has become a major bottleneck affecting the satellite navigation performance of unmanned aerial systems，also significantly impacting operational safety. This paper focuses on analyzing the variation of interference power with changing spatial position during outdoor-field dynamic testing of satellite navigation anti-jamming performance in UAS. A quantitative evaluation method for anti-jamming capability is proposed, which can substantially improve the accuracy of outdoor-field flight assessments for satellite navigation anti-jamming performance.