基于多重交叉残差方法的空间目标旋转特性分析
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摘要
针对传统的频谱分析和自相关函数反演周期时常出现虚假周期的问题,提出了多重交叉残差法处理空间旋转目标雷达散射截面(Radar Cross Section,RCS)的时间序列。以空间跟踪和监视系统(Space Tracking and Surveillance System,STSS)卫星为例,仿真了空间目标失稳旋转状态,对比了频谱分析、自相关函数和多重交叉残差3种方法的处理结果,发现当目标存在进动运动时多重交叉残差法抗干扰能力更强。在此基础上,进一步研究了不同章动角时多重交叉残差法对旋转周期的反演效果,结果表明章动角大小会影响旋转周期的反演准确度,且章动角达到一定数值后,卫星进动幅度过大导致RCS序列周期性模糊,无法用多重交叉残差法反演出旋转周期。
In retrieving period based on spectrum analysis and autocorrelation function,false periods often occur.In allusion to this problem,the multiple cross-residue method is proposed to process radar cross section(RCS) sequence of rotating space target. Instability rotating state of the Space Tracking and Surveillance System(STSS) satellite is simulated and RCS data is generated by a fast algorithm based on improved Gordon equation.Comparison of the processing effect of spectrum analysis,autocorrelation function and multiple cross-residue indicates that,without precession,treatment effect of the three methods is similar,but multiple cross-residue has stronger anti-interference ability when precession exists.On this basis,considering different nutation angle,further research on retrieving effect of multiple cross-residue is carried out.The simulation results proclaim that retrieving accuracy is affected by the value of nutation angle.When nutation angle exceeds a certain value,RCS sequence will become fuzzy and rotation period can not be retrieved with multiple cross-residue.
In retrieving period based on spectrum analysis and autocorrelation function,false periods often occur.In allusion to this problem,the multiple cross-residue method is proposed to process radar cross section(RCS) sequence of rotating space target. Instability rotating state of the Space Tracking and Surveillance System(STSS) satellite is simulated and RCS data is generated by a fast algorithm based on improved Gordon equation.Comparison of the processing effect of spectrum analysis,autocorrelation function and multiple cross-residue indicates that,without precession,treatment effect of the three methods is similar,but multiple cross-residue has stronger anti-interference ability when precession exists.On this basis,considering different nutation angle,further research on retrieving effect of multiple cross-residue is carried out.The simulation results proclaim that retrieving accuracy is affected by the value of nutation angle.When nutation angle exceeds a certain value,RCS sequence will become fuzzy and rotation period can not be retrieved with multiple cross-residue.
引文
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[3]戴崇.雷达目标动态RCS特性建模方法研究[D].长沙:国防科学技术大学,2013.
[4]刘丽华,王壮,胡卫东,等.弹道导弹进动周期雷达测量提取方法研究[J].现代雷达,2008,30(1):30-33,37.
[5]黄小红,姜卫东.空间目标RCS序列周期性判定与提取[J].航天电子对抗,2005,21(2):29-30.
[6]寇鹏,牛威,张瑞.一种空间目标旋转周期估计的新方法[J].宇航学报,2014,35(3):356-361.
[7]张艺瀛,高建军,李高鹏,等.弹道中段目标进动周期的估计[J].电讯技术,2017,57(2):217-223.
[8]徐灿,李智.基于改进Gordon方程的RCS快速算法[J].装备学院学报,2016,27(5):85-89.
[9]彭兰.改进的物理光学技术计算目标的雷达散射截面[D].西安:西安电子科技大学,2013.
[10] RIUS J M,FERRANDO M,JOFRE L. High-frequency RCS of complex radar targets in real-time[J]. IEEE Transactions on Antennas and Propagation,1993,41(9):1308-1319.
[11] BINZ C R,DAVIS M A,KELM B E,et al.Optical survey of the tumble rates of retired GEO satellites[R].Washington DC:Naval Research Lab,2014.
[12] ZHU X,ZHANG S,NING Z,et al. Applications of 3σclipping rule in the fatigue damage accumulation analysis[J]. Spacecraft Environment Engineering,2014,31(6):609-613.
[13]中华人民共和国建设部.岩土工程勘察规范:GB50021-94[S].北京:中国建筑工业出版社,1995.
[14]黄圳圭.航天器姿态动力学[M].长沙:国防科技大学出版社,1997.
[15] WILSON L R M,HOPCRAFT K I.Periodicity in the autocorrelation function as a mechanism for regularly occurring zero crossings or extreme values of a Gaussian process[J].Physical Review E,2017,96(6):062129.