Iterative construction of UAV low-altitude air route network in an urbanized region: Theoretical system and technical roadmap
XU Chenchen, YE Huping, YUE Huanyin, TAN Xiang, LIAO Xiaohan
Acta Geographica Sinica . 2020, (5): 917 -930 .  DOI: 10.11821/dlxb202005003