Non-cooperative Space Target Estimation Algorithm Without Prior Information Dependence Based on Temporal Line of Sight Constraint  

基于时间视线约束的无先验信息依赖非合作空间目标估计算法

作　　者：XIAO Hui ZHU Chongrui LIU Xinqi YU Yifan SHENG Qinghong YANG Rui 肖晖;朱崇瑞;刘昕圻;俞羿帆;盛庆红;杨锐(南京航空航天大学航天学院,南京211106;南京晓庄学院环境科学学院,南京211171)

机构地区：[1]College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,P.R.China [2]School of Environmental Science,Nanjing Xiaozhuang University,Nanjing 211171,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2024年第4期526-540,共15页南京航空航天大学学报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(Nos.42271448,41701531);the Key Laboratory of Land Satellite Remote Sensing Application,Ministry of Natural Resources of the People’s Republic of China(No.KLSMNRG202317)。

摘　　要：Under single-satellite observation,the parameter estimation of the boost phase of high-precision space noncooperative targets requires prior information.To improve the accuracy without prior information,we propose a parameter estimation model of the boost phase based on trajectory plane parametric cutting.The use of the plane passing through the geo-center and the cutting sequence line of sight(LOS)generates the trajectory-cutting plane.With the coefficient of the trajectory cutting plane directly used as the parameter to be estimated,a motion parameter estimation model in space non-cooperative targets is established,and the Gauss-Newton iteration method is used to solve the flight parameters.The experimental results show that the estimation algorithm proposed in this paper weakly relies on prior information and has higher estimation accuracy,providing a practical new idea and method for the parameter estimation of space non-cooperative targets under single-satellite warning.在单星观测条件下,高精度空间非合作目标助推段参数估计需要先验信息。为了提高在无先验信息情况下的精度,提出了一种基于弹道平面参数切割的助推段参数估计模型。利用穿过地心的平面和切割序列视线(Line of sight,LOS)生成轨迹切割平面。直接以轨迹切割面系数作为待估计参数,建立了空间非合作目标运动参数估计模型,采用高斯-牛顿迭代法求解飞行参数。实验结果表明,本文提出的估计算法对先验信息依赖较弱,具有较高的估计精度,为单星预警下空间非合作目标参数估计提供了一种实用的新思路和新方法。

关 键 词：motion parameter estimation estimation of impact point infrared early warning boost phase modeling trajectory database construction 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]