基于卫星跟踪和星敏感器的地月L2点星座自主导航  

Integrating satellite-to-satellite tracking with star tracker navigation for satellite constellation at earth-moon L2 point

作　　者：李彦军[1,3] 李星秀 吴盘龙[1] 姚培东[1] 薄煜明 LI Yanjun;LI Xingxiu;WU Panlong;YAO Peidong;BO Yuming(School of Automation,Nanjing University of Science&Technology,Nanjing 210094,China;School of Science,Nanjing University of Science&Technology,Nanjing 210094,China;Beijing Chinese sciences Aerospace Talent Service Co.,Ltd Jiangsu branch,Nanjing 210001,China)

机构地区：[1]南京理工大学自动化学院,南京210094 [2]南京理工大学理学院,南京210094 [3]北京中科航天人才服务有限公司江苏省分公司,南京210001

出　　处：《中国惯性技术学报》2020年第1期60-66,共7页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(61473153);航空科学基金(2016ZC59006)。

摘　　要：近年来在地月L2点构建自主导航星座用于深空探测已经成为研究热点。针对摄动引起的未知模型误差和量测异常造成单独使用卫星跟踪定轨性能较差的问题,提出了一种基于卫星跟踪和星敏感器组合的导航方案。在方案中融合了星间跟踪的距离、多普勒频移信息以及星敏感器测量的星座卫星与月球之间的角度信息,设计了一个联邦自适应平方根容积卡尔曼滤波器,利用自适应尺度矩阵对测量协方差进行改进,提高了异常测量下的定轨精度和鲁棒性。仿真结果表明,在异常测量下所提出的导航滤波方法的位置误差和速度误差,相比传统的联邦平方根容积卡尔曼滤波分别降低了68.85%和44.17%。Constructing a satellite constellation with autonomous navigation at the Earth-Moon L2 libration point for deep space exploration has been studied extensively in recent years.The accuracy of satellite-to-satellite tracking(SST)orbit determination is poor due to the unknown model error caused by perturbation and abnormal measurement.An Integrated navigation scheme of SST with star tracker(ST)for satellite constellation at earth-moon L2 point is designed.The range,Doppler information of SST and the angle information between the constellation satellites and the moon of the ST are fused together.Then,a federated adaptive square-root cubature Kalman filter(FASCKF)is developed to improve the accuracy of autonomous orbit determination by introducing an adaptive-scale matrix to adjust the measure covariance under abnormal measurement.The simulation results show that the position error and velocity error of the FASCKF are reduced by 68.85%and 44.17%respectively compared with the federated square-root cubature Kalman filter.

关 键 词：平动点 定轨 平方根容积卡尔曼滤波 自适应尺度矩阵 测量故障 

分 类 号：U448.2[建筑科学—桥梁与隧道工程]