1. School of Electrical Engineering and Automation, Anhui University, 111 Jiulong Road Hefei, Hefei 230601, China
2. Engineering Research Center of Autonomous Unmanned System Technology, Ministry of Education, Anhui University, 111 Jiulong Road Hefei, Hefei 230601, China
3. National Engineering Research Center for Agro-Ecological Big Data Analysis & Application, Anhui University, 111 Jiulong Road Hefei, Hefei 230601, China