Demarcation method of safety separation for multi-rotor UAV in free airspace
Honghai ZHANG, Bowen LI, Hao LIU, Gang ZHONG, Yuhan FEI
Systems Engineering and Electronics . 2023, (10): 3149 -3156 .  DOI: 10.12305/j.issn.1001-506X.2023.10.19