自由段弹道识别及快速预警  

Recognition of Free-flight Trajectory and Rapid Early Warning

作　　者：杨冬[1,2] 徐劲[1,3] 陈务深[4] 

机构地区：[1]中国科学院紫金山天文台,南京210008 [2]中国科学院大学,北京100049 [3]中国科学院空间目标与碎片观测重点实验室,南京210008 [4]南京工业大学理学院,南京210009

出　　处：《天文学报》2014年第3期256-267,共12页Acta Astronomica Sinica

摘　　要：针对地面预警雷达捕获跟踪空间目标和实时测轨获取的目标轨道根数,提出了一种基于目标轨道运动特征识别自由飞行导弹及推算发点、落点的处理方法.该方法分为二体模型求解初交点和摄动修正两部分,分别进行迭代计算.数值实验结果表明：该处理方法计算收敛速度快,每次仅需6～8次迭代,能够满足导弹预警的高时效性要求.A processing approach is proposed to identify the free-flight missiles and derive the launch and landing locations based on the orbital motion characteristics of the missiles.In this approach,the orbital elements of the target missile are obtained by tracking the target in space,and recording the real-time orbital measurements using ground-based early-warning radar.The method has two parts：the two-body model and perturbation correction.The results indicate that,the approach has a fast convergence rate after just6～8 times of iterations,and the calculation can satisfy the highly time-sensitive requirement of the early warning of missiles.

关 键 词：航天器 行星与卫星:探测 方法:数值 

分 类 号：P138[天文地球—天体力学]