南京航空航天大学学报（英文版）2022，Vol.39Issue(4)：400-414,15.
基于非线性动力学法的航天器非合作交会仅测角导航
Non?linear Dynamics Method to Angles?Only Navigation for Non?cooperative Rendezvous of Spacecraft
摘要
Abstract
Aiming at the problem of relative navigation for non-cooperative rendezvous of spacecraft,this paper proposes a new angles-only navigation architecture using non-linear dynamics method. This method does not solve the problem of poor observability of angles-only navigation through orbital or attitude maneuvering,but improves the observability of angles-only navigation through capturing the non-linearity of the system in the evolution of relative motion. First,three relative dynamics models and their corresponding line-of-sight(LoS)measurement equations are introduced,including the rectilinear state relative dynamics model,the curvilinear state relative dynamics model,and the relative orbital elements(ROE)state relative dynamics model. Then,an observability analysis theory based on the Gramian matrix is introduced to determine which relative dynamics model could maximize the observability of angles-only navigation. Next,an adaptive extended Kalman filtering scheme is proposed to solve the problem that the angles-only navigation filter using the non-linear dynamics method is sensitive to measurement noises. Finally,the performances of the proposed angles-only navigation architecture are tested by means of numerical simulations,which demonstrates that the angles-only navigation filtering scheme without orbital or attitude maneuvering is completely feasible through improving the modeling of the relative dynamics and LoS measurement equations.关键词
仅测角导航/非线性动力学/可观性分析/非合作交会/自适应Kalman滤波Key words
angles-only navigation/non-linear dynamics/observability analysis/non-cooperative rendezvous/adaptive Kalman filter分类
航空航天引用本文复制引用
杜荣华,廖文和,张翔..基于非线性动力学法的航天器非合作交会仅测角导航[J].南京航空航天大学学报（英文版）,2022,39(4):400-414,15.基金项目
This work was supported by the China Aerospace Science and Technology Corporation Eighth Re-search Institute Industry-University-Research Cooperation Fund(No.SAST 2020-019). （No.SAST 2020-019）
