TIAN Fanghao, male, born in 1987, received the M.S. degree from Xi'an Research Institute of High Technology in 2010, He is currently working toward the Ph.D. degree, all in electronic engineering. His current research interests include attitude determination, land-vehicle navigation, and mobile satellite communication. Corresponding author: WANG Rong (wangrong07@tsinghua.org.cn)WANG Rong, male, born in 1983, His current research interests include signal processing and machine learning. GAO Feifei, male, born in 1980, received his Ph.D degree from National University of Signgapore. He is currently an associate professor in Department of Automation, Tsinghua University. His current research interests include signal processing, pattern recognition and cognitive radio. YAO Minli, male, born in 1966, received the Ph.D. degree from the Xi'an Jiaotong University in 1999. He is currently a Professor with the department of electronic & information engineering, Xi'an Research Institute of High Technology. His current research interests include signal processing and mobile satellite communication.