Modified filter for mean elements estimation with state jumping  

作　　者：YU Yanjun YUE Chengfei LI Huayi WU Yunhua CHEN Xueqin 

机构地区：[1]Research Center of Satellite Technology,Harbin Institute of Technology,Harbin 150001,China [2]Institute of Space Science and Applied Technology,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China [3]College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China

出　　处：《Journal of Systems Engineering and Electronics》2024年第4期999-1012,共14页系统工程与电子技术（英文版）

基　　金：This work was supported by National Natural Science Foundation of China(12372045);Shanghai Aerospace Science and Technology Program(SAST2021-030).

摘　　要：To investigate the real-time mean orbital elements(MOEs)estimation problem under the influence of state jumping caused by non-fatal spacecraft collision or protective orbit trans-fer,a modified augmented square-root unscented Kalman filter(MASUKF)is proposed.The MASUKF is composed of sigma points calculation,time update,modified state jumping detec-tion,and measurement update.Compared with the filters used in the existing literature on MOEs estimation,it has three main characteristics.Firstly,the state vector is augmented from six to nine by the added thrust acceleration terms,which makes the fil-ter additionally give the state-jumping-thrust-acceleration esti-mation.Secondly,the normalized innovation is used for state jumping detection to set detection threshold concisely and make the filter detect various state jumping with low latency.Thirdly,when sate jumping is detected,the covariance matrix inflation will be done,and then an extra time update process will be con-ducted at this time instance before measurement update.In this way,the relatively large estimation error at the detection moment can significantly decrease.Finally,typical simulations are per-formed to illustrated the effectiveness of the method.

关 键 词：unscented Kalman filter mean orbital elements(MOEs)estimation state jumping detection nonlinear system 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计] TN713[电子电信—电路与系统]