导弹制导系统精度分析方法研究

Research onMethods of Missile Guidance Precision Analysis

在优化导弹的制导精度的研究中,针对导引头测量误差和导引头模型对导弹制导系统精度的影响,为了提高制导精度,解决非线性和随机效应引起的误差,采用蒙特卡罗法、协方差分析描述函数法和统计线性化伴随法对导弹的制导精度进行了研究。根据三种方法进行建立具有导引头测量误差和目标随机机动的非线性的导弹制导模型,在不同导引头模型下分析了导弹制导系统的精度。仿真结果表明,传统模型方法导引精度差,成为影响制导系统精度的主要因素。而采用一阶导引头模型效果好,不影响制导精度,还可以降低计算量和简化建模。

Based on the seeker measure error and the effects of seeker model on the precision of missile guidance system,the Monte Carlo method,Covariance Analysis Describing Function Technique（CADET） and Statistical Linearization Adjoint Method（SLAM） are used to study the precision of missile guidance system.After introducting the three methods,the non-linear model of missile guidance system is built up considering the seeker measure error and randomly propellable target,then the missile guidance system precision is studied based on different seeker models.The results indicate that the effects of seeker measure error on missile guidance system precision gets bigger,it changes rapidly at the last period and is the most important factor that effects the guidance system precision.Using one-order seeker model has no effect on guidance precision,and it can also reduce the calculation and simplify the missile model.