Guangxue Yu was born in 1986. He received his B.E. degree in Nanjing University of Aeronautics and Astronautics, in 2009. He is currently a Ph.D. candidate in School of Astronautics, Beihang Uni- versity. His research interests include control the- ory and applications, guidance, and control and dy- namics. E-mail: yuguangxue123@ 126.com Huifeng Li was born in 1970. She received her B.E. degree and Ph.D. degree in Xi'an Jiaotong Univer- sity, in 1991 and 1998, respectively. She is now a professor in School of Astronautics, Beihang Uni- versity. Her research interests include modeling and control methods of hypersonic vehicle, and guid- ance and control technology. E-mail: lihuifeng @buaa.edu.cn