A Re-entry Guidance Method for Vehicle Using Virtual Displacement Concept

摘要：

A new guidance law for reentry vehicle is presented in this paper. The proposed approach is based on the fact that lateral force is formed in a plane which is perpendicular to the reentry vehicle velocity. Particularly, the nominal impact point is defined as the impact point generated by zero lift trajectory. The virtual displacement is defined as the tiny change of the nominal impact point, which is caused by any instantaneous lateral force at the beginning of the trajectory. The optimal direction of the lateral force is obtained by the solution of optimal virtual displacement, in which the optimal virtual displacement should point to the target. The analytical solution of reentry trajectory and the linear quadratic gauss (LQG) method are used to design this guidance law. The simulation results demonstrate the effectiveness of the proposed method.

关键词： Reentry Vehicle Guidance Law Virtual Displacement Analytical Solution LQG

作者: Changsheng Gao Ruikang Li Wuxing Jing

作者单位: Department of Aerospace Engineering, Harbin Institute of Technology, Harbin, 150001, China

会议类型: 国际会议

会议名称: The 22nd China Control and Decision Conference(2010年中国控制与决策会议)

会议地点: 徐州

会议语种:英文

页码: 579-582

在线出版日期: 2010-05-26（万方平台首次上网日期，不代表论文的发表时间）