摘要
空间红外预警系统仅可获得弹道导弹主动段尾焰红外辐射信号到达角信息,采用非线性最小二乘法可获得目标运动状态的迭代解。本文即针对其导弹主动段估计误差进行研究,通过理论推导得出状态估计的CRLB,并结合仿真结果给出其估计误差受预警星座分布、目标相对位置等因素影响的分析。
Space IR early warning system can only obtain the DOA information of ballistic missile＇s plume infrared radiation signal in the boost phase. Using Nonlinear Lease Square （NLS） estimator, we can get the iterative result of target state. The estimation performance is affected by the satellite constellation, the relative position of the target, and so on. In this paper, the CRLB of the estimation error in the boost phase is deduced theoretically. The error characteristics are analyzed finally based on the simulation results.
出处
《电光与控制》
北大核心
2007年第2期50-54,共5页
Electronics Optics & Control
关键词
空间预警系统
主动段
弹道估计
GDOP
space early - warning system
boost phase
trajectory estimation
GDOP
