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通过将协方差描述函数法和伴随技术相结合,提出统计线性化伴随法,并将其运用于导弹制导系统的精度分析,建立了综合考虑目标机动、随机风干扰以及导引头噪声作用的导弹制导精度非线性模型,分析了各随机干扰因素对制导系统精度的影响,同时与协方差描述函数法、蒙特卡罗法进行了比较。仿真结果表明,统计线性化伴随法能够更全面地反映制导系统的统计性能,且具有更高的计算效率。
By combining the covariance descriptive function method with the attendant technique, a statistical linearization adjoint method is proposed and applied to the precision analysis of the missile guidance system. The missile that combines target maneuver, random wind disturbance and seeker noise is established The nonlinear model of guidance precision is analyzed. The influence of each random disturbance factor on the guidance system accuracy is analyzed. At the same time, the covariance description function method and Monte Carlo method are compared. The simulation results show that the statistical linearization adjoint method can reflect the statistical performance of the guidance system more fully and has a higher computational efficiency.