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本文用CADET(Covariance Analysis Describing Function Technique)即协方差分析描述函数法分析了反舰导弹侧向脱靶量(脱靶距离均值和均方散布的总称)问题。首先描述了影响脱靶量的侧向阵风和目标机动等因素的随机特性。然后由CADET方程计算出在各种随机干扰作用下导弹的脱靶量,从而确定影响脱靶量的主要因素。同时用Monte-Carlo法进行了验证,得到了比较满意的结果。最后分析了在干扰因素作用下,导弹的脱靶量与导引比的关系。通过CADET方法计算的这些结果,可以为型号的改进和导弹制导性能的仿真评定提供依据。
In this paper, the CADET (Covariance Analysis Describing Function Technique) that covariance analysis describes the function method to analyze the anti-ship missile lateral miss distance (off-target distance mean and mean squared) problem. Firstly, the random characteristics of lateral gusts and target maneuvers which affect the miss distance are described. Then CADET equation was calculated in a variety of random missiles missile miss distance, in order to determine the main factors affecting miss distance. At the same time, Monte-Carlo method was used to verify the results. Finally, the relationship between missile miss distance and the guidance ratio under the interference factor is analyzed. These results calculated by the CADET method can provide the basis for the improvement of the model and the simulation evaluation of missile guidance performance.