主动段弹道估计可观测性分析  

Observability Analysis of Boost-Phase Trajectory Estimation

作　　者：唐宏斌[1] 郑键[1] 李骏[1] 姜文利[1] 周一宇[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《电子信息对抗技术》2006年第2期27-31,共5页Electronic Information Warfare Technology

摘　　要：空间红外预警系统仅可获得弹道导弹主动段尾焰辐射信号方位角信息,采用极大似然估计和非线性最小二乘估计可获得目标运动状态的迭代解。预警卫星与目标距离较远,测量方程非线性,可观测性较弱。本文即从估计误差CRLB和Fisher信息矩阵条件数入手,对弹道导弹目标主动段状态估计可观测性做出理论推导和仿真分析。In space early warning system, only DOA information of the infrared radiation signal of the ballistic missile＇s plume in boost phase can be obtained, and using ML and NLS, we can get the iterative result of the target state. Because of the far distance between the satellite and the target and the nonlinearity of the measurement equation, the observability of the system is weak. The CRLB of the estimation variance and the condition number of the Fisher information matrix are deduced theoretically first, and then the observability analysis is given with the simulation results.

关 键 词：空间预警系统 主动段 弹道估计 GDOP 

分 类 号：TN971[电子电信—信号与信息处理]