Li Jun received the Bachelor's degree in electronic science and engineering from the National University of Defense Technology, Changsha, China, in 2007. Currently, he is working towards the Ph.D. degree in the National University of Defense Technology, Changsha, Hunan, China. His research interests include satellite intelligent planning and scheduling, and Sensor Web. Li Jun received Ph.D. degree in electronic science and engineering from the National University of Defense Technology, Changsha, China, in 2000. Currently, his main research interests are spatial information systems and application technology, Remote Sensing and Geopolitical information Integration. Corresponding author. Tel.: +86 0731 84574439. E-mail addresses: junli@nudt.edu.cn (J. Li).