飞行过程中存在的各种干扰会使导弹偏离预定弹道而影响其精度,因此研究各干扰因素对弹道参数的影响显得很有必要。文中通过试验仿真研究对比了几种典型干扰对某型导弹弹道参数的影响,建立了该型导弹六自由度标准弹道模型,以及发动机推力偏心、风干扰、初始扰动、分离扰动四种典型干扰的偏差模型。针对四种极限模式进行了仿真试验,分析了各因素对导弹弹道参数的影响。仿真结果表明,对于该型导弹,经常干扰对其飞行特性的影响远大于瞬时干扰,导弹位置受推力偏心的影响较大,姿态角主要受风干扰影响,而瞬时干扰只在作用时刻前后对弹道参数有影响且影响不大。

The disturbances occurred during missile launching makes trajectory deviate from expectation, it is necessary to investigate the influence of disturbances on the trajectory parameters. The influence of several typical disturbances on some missile's trajectory parameters were compared through simulation, the six degree-of-freedom model of standard trajectory was established, and then models with four typical disturbances (eccentricity of motor thrust, wind interference, initial disturbance, separating disturbance) were found. Simulation tests for four ultimate situations were carried through, and the influence of each factor on missile trajectory parameters was analyzed. The results show that for this missile's flight characteristics, the influence of frequent interference is much larger than that of the instantaneous interference, the position is influenced mainly by the thrust eccentricity, the attitude angle is mainly affected by wind disturbance, and the instantaneous interferences just have little effect on ballistic parameters before and after the action time.