Low-Cost Differential Flatness Identification for Trajectory Planning and Tracking of Small Fixed-Wing UAVs in Dense Environments - Liu, Tianqing; Wang, Mengyun; Niu, Yifeng; Li, Jie; Zhou, Han (2024 International Conference on Unmanned Aircraft Systems (ICUAS), Unmanned Aircraft Systems (ICUAS), 2024 International Conference on, 2024)