基于奇异谱分析的空间非合作目标无源机动检测方法  

SSA-based passive orbit maneuver detection method for space non-cooperative target

作　　者：龚柏春 杨世航 韩飞 孙玥 宁昕[3] GONG Baichun;YANG Shihang;HAN Fei;SUN Yue;NING Xin(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Shanghai Aerospace Control Technology Research Institute,Shanghai 201109,China;School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]南京航空航天大学航天学院,南京210016 [2]上海航天控制技术研究所,上海201109 [3]西北工业大学航天学院,西安710072

出　　处：《中国惯性技术学报》2024年第10期1052-1060,共9页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金面上项目(12272168);空间智能控制技术全国重点实验室开放基金(HTKJ2023KL502015)。

摘　　要：针对空间非合作目标无源预警任务中无先验信息条件下的目标轨道异常检测难题,提出了基于奇异谱分析的目标机动无源检测方法。首先,在追踪卫星轨道坐标系下建立了相对动力学模型及无源相对视线角测量模型。然后,通过奇异谱分析对视线角原始测量序列进行特征提取,设计了差异化评价指标及其阈值的计算方法并利用与、或门逻辑进行综合机动判断。最后,在GEO类型轨道应用场景下对所提算法进行了数值仿真验证与结果分析。仿真结果表明,当无源测角精度不低于3×10^(-4)rad时,相对距离1000 km以内目标执行的1 m/s量级以上的小脉冲机动可被有效地检测,检测成功率超过90%。To solve the maneuver detection problem in the initial orbit determination stage of the space situation awareness mission for non-cooperative targets,a passive maneuver detection method based on singular spectrum analysis is proposed.Firstly,a nonlinear relative dynamics and a line-of-sight measurement model are established in the local vertical local horizontal frame.Subsequently,the features of the line-of-sight(LOS)angle sequences are extracted by singular spectrum analysis,the calculation method of the differential evaluation index and threshold are designed,and the AND/OR gates are used for comprehensive judgment.Finally,the maneuver detection model is verified,tested and analyzed in GEO type orbit and different working conditions.With a camera precision of no less than 3×10-4 rad,small pulse maneuvers within the range of 1 m/s for non-cooperative targets with an altitude difference of 1000 km could be effectively detected,the success rate of maneuver detection above 1 m/s is more than 90%.

关 键 词：空间态势感知 空间非合作目标 相对导航 机动检测 奇异谱分析 

分 类 号：U666.1[交通运输工程—船舶及航道工程]