摘要
以某火箭弹为例，在随机风场作用下，利用纵风作用下的随机弹道系统成形滤波器，把成形滤波器的微分方程和外弹道角运动方程联立，对此系统采用协方差分析描述函数法，对火箭弹的散布进行了计算．计算结果表明，随机风场作用下成形滤波器的原理，即平稳有色噪声等效处理为高斯白噪声作用下的状态的理论得到了实例验证，也说明了有色噪声白化过程的可行性。同时由于成形滤波器的采用，系统的输入为高斯白噪声，当用协方差分析描述函数法时，不但大大简化了火箭弹散布计算过程，而且得到的解也是精确解．另外运用尾翼延时张开技术来减小散布的措施，得出了不同平均风速下的火箭弹角散布与尾翼延张时间的关系的仿真曲线，以及此类型号的火箭弹在仅考虑随机风场作用时的最佳尾翼延张时间．
In this paper the rocket of 122mm, 20km is exampled, CADET is used in random ballistics system(RBS) with the action of random wind by use of sharping filter when the differential equations of sharping filter and angle motion equations of ballistics are allied. the spread of rocket is calculated. The result denotes that the theory of sharping filter, it is that color noise is same to the condition of the action of white noise is verified. The process of calculating of rocket spread is very sample bacause input of RBS is Gaussian white noise by use of sharping filter and the method of CADET; the solution is exact. The simulation curves between rocket spread and time of unfolding fins are given, and the optimal time of unfolding fins of this type of rocket is given only by the action of random wind.
出处
《弹道学报》
CSCD
北大核心
1997年第4期55-58,,62,,共5页
Journal of Ballistics
