Yuan Sun received the B.S. degree in surveying and mapping from the Xi'an University of Science and Technology Wuhan, China, in 2006, and the Ph.D. degree in cartography and geography information system from the Institute of Remote Sensing Applications, Chinese Academy of Science, Beijing, China, in 2011. She is currently a Research Assistant with the Institute of Remote Sensing and Digital Earth, Chinese Academy of Science. Her research interests include vegetation remote sensing and cross calibration.