摘要
云雾后向散射会产生引发激光引信虚警的回波信号,针对激光引信与云雾边缘的间距对回波特性影响的定量研究鲜有报道。基于蒙特卡罗法,对云雾散射回波进行了模拟仿真分析,并定量给出了云雾散射回波的波形、波峰位置和峰值功率随引信与云雾边缘的间距H*的变化规律。研究结果表明:在激光引信参数给定的条件下,随着H*的减小,云雾散射回波波形更趋近于高斯波形;当盲区距离H0>0.6 H*时,回波波峰位置主要由盲区距离决定,波峰位置随间距H*的变化不明显;当H0<0.6 H*时,波峰位置随间距H*增大而增大。分析表明:仿真结果符合云雾对传输光束的散射规律,可以为激光引信的目标识别提供技术支撑。
Scattering effect of clouds and fogs produces the backscattering signal which results in false alarm for laser fuze. There were few reports on the studies of the cloud-and-fog backscattering echo which affected by the space between cloud and fuze. Based on the Monte-Carlo technology, cloud and fog scattering effects were simu- lated,the rules of wave shape and peak power of scattering echo varied with the space between fuze and cloud were quantitatively given. Research results showed that wave shape of the scattering echo was more close to Gaussian shape in the decreasing of space H. When blind distance H0 and space Hsatisfied H0 〉 0. 6H , peak position mainly depended on blind distance,peak power increased in the increasing of H. When blind distance H0 and space H satisfied H0 〈 0. 6H ,increasing speed of peak position was bigger,and peak power decreased with the increasing of H. Simulation results provided laser fuze target discrimination for reference.
出处
《探测与控制学报》
CSCD
北大核心
2012年第5期1-4,15,共5页
Journal of Detection & Control
基金
国防预研项目资助(9140A05010209HK14)
关键词
激光引信
近场
云雾
散射
laser fuse
near field
cloud and fog
scattering
