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系统分析了DSP导弹预警系统的工作流程,研究了DSP导弹预警熊对战略导弹的弹道确定和落点预报原理。在此基础上,构建了DSP系统在双星凝视跟踪模式下的观测模型,并根据战略导弹主动段动力学模型特性和自由端导弹动力学方程,构建了导弹实时弹道确定中的简化状态模型和落点预报模型。在观测模型和状态模型基础上,提出了双星观测模式下的弹道导弹主动段实时弹道确定方法。基于UKF非线性滤波技术,通过随机采样点逼近非线性观测方程和导弹主动段,在不必求解雅克比矩阵的情况下,实现了DSP导弹防御系统对战略导弹主动段的实时弹道确定和实时落点预报功能。最后,基于STK仿真实现了DSP导弹预警的全过程,仿真结果表明,双星观测模式下,DSP导弹预警系统对战略导弹的落点预警精度能达到10~50 km,完全满足战术需求。
The working flow of the DSP missile early warning system is analyzed systematically. The ballistic determination and fall forecasting principle of the pre-warning bear missile against the strategic missile is studied. On this basis, the observation model of DSP system under binary star gaze tracking mode is constructed. Based on the dynamic model of the active missile and the dynamics equation of the free-end missile, a simplified state model and a Point prediction model. Based on the observational model and the state model, a real-time trajectory determination method for the ballistic missile active section under the dual-star observation mode is proposed. Based on the UKF nonlinear filtering technique, the non-linear observation equation and the missile active segment are approximated by random sampling points. The real-time trajectory determination and real-time trajectory of the DSP missile defense system on the active segment of the strategic missile are realized without solving the Jacobian matrix Forecast function. Finally, the whole process of DSP missile warning is realized based on STK simulation. The simulation results show that the precision of early warning of strategic missiles by DSP missile early warning system can reach 10 ~ 50 km under the double star observation mode, which fully meets the tactical requirements.