光电干扰箔片云团运动规律的仿真研究

鉴于自燃箔片云团对红外成像导引头光电干扰有效的试验结果,针对气动阻力大的箔片云团,采取常用的气动阻力公式f=-kv2来描述运动规律,引入匀降速度u,分别推导出水平方向和垂直方向上升段和下降段的速度、位移的计算公式.结合图象分析对云团的运动规律进行仿真研究,还讨论了采用不同气动阻力公式对拟合系数和拟合相似度的影响.该方法可推广应用于大气层内亚声速质点运动轨迹的解析方法.

Moving characters simulation of foils cloud used in optics-electronic countermeasure

After successful result of optics-electronic coutermeasure test is achieved,it is proved that the pyrophoric foils cloud can effectively decoy and go away track of IR imaging guiding-head.For pyrophoric foils cloud whose aerodynamic resistance is large,the formula(f=-kv2)is used in describing its moving characters.Using uniformity fall-velocity(u),calculate formula for velocity and displacement in horizontal and vertical direction,rise and fall section are derived.According to the images analysis,the moving...