Open AccessArticle by Weizhong Sun 1,2,3, Bohan Fu 1,2,3 and Zhao Zhang 1,2,3,4,* 1 Key Laboratory of Smart Agriculture System Integration, Ministry of Education, Beijing 100083, China 2 Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China 3 College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China 4 Department of Agricultural and...