Ruru Deng received his M.E. degree in Remote Sensing Geology from the China University of Geosciences, Wuhan, in 1989, and a Ph.D. degree in Cartography and Geographical Information Systems from the Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, China, in 2002. He is currently a Professor at the School of Geography and Planning, Sun Yat-sen University, Guangzhou, China. His research interests include quantitative remote sensing theory, microwave remote sensing theory, and their applications.