CADET在舰空导弹比例导引制导系统中的应用

摘要

针对传统Monte-Carlo方法存在计算量大、耗时过长的缺点,采用协方差分析描述函数技术(the covariance analysis describing function technique,CADET)法建立弹目相对运动方程.介绍统计协方差分析描述函数技术的原理,讨论非线性系统的准线性化问题,对协方差分析描述函数技术在比例导引制导系统中的应用进行分析,并以实例说明.结果表明:该方法在进行舰空导弹制导性能分析时耗时短、统计性能好、精度高,明显优于传统Monte-Carlo法.%Aiming to the disadvantage of computational complex and long time-consuming of traditional Monte-Carlo method, establish guided missile target relative motion equation using the covariance analysis describing function technique (CADET). The principle of CADET is introduced in the paper. Then study the linearization of nonlinear function, analyze the application of CADET in proportional guidance control system. And give an example to analysis it. The results show that the method has the advantage of higher speed, statistical performance and precision in the guidance performance analysis. It is better than Monte-Carlo method.