1. Glasgow College, University of Electronic Science and Technology of China,Chengdu,Sichuan,PRC,611731
2. School of Resources and Environment, University of Electronic Science and Technology of China,Chengdu,Sichuan,PRC,611731
3. Electric Power Research Institute, Yunnan Power Grid Company Ltd., China Southern Power Grid,Joint Laboratory of power remote sensing technology,Kunming,Yunnan,PRC,650217