Wang Zhenhuan received the B.S. and M.S. degrees in automation from Harbin Institute of Technology in 2006 and 2008, respectively. Now he is a Ph.D. candidate at Space Control and Inertial Technology Research Center, Harbin Institute of Technology. His research inter- ests include guidance, navigation and control. Corresponding author. Tel.: + 86 451 86402350 3103. E-mail addresses: zhenhuanwang@gmail.com (Z. Wang), pure550@ sohu.com (X. Chen), zqshuang2000@yahoo.com.cn (Q. Zeng).