考虑降雨影响的飞机生存力模型与仿真分析

为研究更符合实际战场环境的飞机作战生存力,以降雨这一自然环境为典型,建立了雨杂波干扰下雷达对飞机的探测概率模型以及飞机生存力模型。认为飞机的RCS是Swerling起伏目标,通过确定综合信干比和最小可检测信噪比,采用蒙特卡罗法,利用MATLAB仿真了在雨杂波干扰和杂波抑制综合作用下飞机的生存力与距离的关系,并重点讨论了雷达波长和降雨状况对飞机生存力的影响。结论认为:在S波段内,降雨使飞机的生存力有一定程度的提高,且随着降雨量的增大和敌方雷达波长的减小,飞机生存力的提高更为明显;考虑降雨状况的影响,对于飞机生存力的研究是具有一定实际意义的。

Simulation and Analysis of Aircraft Survivability Model the Impacted by Rain

To study aircraft combat survivability that is in more coincident with practical battlefield environment,taking rain as a representative example,the model of detection probability of an aircraft by radar is established in rain clutter,as well as the aircraft survivability model.The radar cross section(RCS) of the aircraft is treated as Swerling fluctuating target,then the signal to jamming ratio and minimum detectable signal to noise ratio are calculated.The relationship between aircraft survivability and range under the effect of both rain clutter and clutter restraint is simulated with Monte Carlo method through MATLAB program.The influence of radar wavelength and rain condition to aircraft survivability is discussed.In the S wave band it can be concluded that aircraft survivability is enhanced by rain at a certain extent.When the rainfall rate increases or enemy radar wavelength decreases,the aircraft survivability is enhanced more obviously.So it is practical meaning to study the aircraft survivability in consideration of the situation of rain.