A Rapid Uncertainty Propagation Method for Pre-Parachute Phase of Mars Entry

摘要：

In this paper, a novel approach is proposed for analyzing evolution of uncertainty in state trajectories of a Mars entry vehicle due to uncertainties in initial conditions and other system parameters. By introducing uncertainty factors, the stochastic dynamical systems are converted into equivalent deterministic dynamical systems in higher dimensional space. And then based on the local linearization and linear system theory, a rapid uncertainty propagation method can be get. Applying the method to a representative entry scenario taken from the NASA MSL-class mission, Simulation results indicate that the proposed method is able to predict evolution of uncertainty, compared with Monte Carlo method, with little degraded accuracy, but with much more computational efficiency.

关键词： uncertainty propagation Taylor expansion Mars entry

作者: Gaofeng Ren Hutao Cui Pingyuan Cui Enjie Luan

作者单位: Deep Space Exploration Research Cencter, Harbin Institute of Technology, Harbin, CO 150001 China Institute of Deep Space Exploration, Beijing Institute of Technology, Beijing 100081, China Commission of Science Technology and Industry for National Defence, Beijing 100048, China

会议类型: 国际会议

会议名称: 2011 China Control and Decision Conference(2011中国控制与决策会议 CCDC)

会议地点: 四川绵阳

会议语种:英文

页码: 3151-3156

在线出版日期: 2011-05-23（万方平台首次上网日期，不代表论文的发表时间）