TY - Tropical Geography A1 - Liang Yuzhe,Zheng Rongbao,Xu Jiayuan and Zheng Zhijian T1 - Knowledge Map Analysis of UAV Remote Sensing Research Based on Citespace Y1 - 2019-03-05 00:00:00.0 JF - Tropical Geography JO - Tropical Geography SP - 309 EP - 317 VL - 39 IS - 2 UR - {https://www.rddl.com.cn/EN/10.13284/j.cnki.rddl.003119} N1 - 10.13284/j.cnki.rddl.003119 ER -