摘要
在雷达反隐身问题的研究中,雷达吸波材料(RAM)的涂覆缩减了目标雷达散射截面(RCS),降低了目标的检测概率。针对雷达反隐身飞机突防的应用背景,以隐身飞机电磁散射特性为基础,以雷达探测概率为评价指标,建立了雷达反隐身的探测效果评估指标。首先研究了一种应用物理光学法(PO)与阻抗边界条件(IBC)结合计算表面涂覆目标雷达散射截面的快速方法。然后解算出隐身飞机突防时的动态RCS数据,并对其电磁散射特性进行分析。最后引入雷达探测概率模型,仿真分析了隐身突防过程中雷达对其探测概率的动态变化过程,理论分析和仿真结果表明:米波雷达相对厘米波雷达更具有反隐身优势。
In the research of the radar against stealth targets,radar cross section （RCS） and the detection probability of the target coated with radar absorbing material （RAM） is decreased.For the scene of radar against stealth target penetration,based on the electromagnetic scattering characteristics of stealth aircrafts,an evaluation model of detection effectiveness is established by taking the detection probability of the radar as an evaluation index.Firstly,a fast RCS calculation technique for target coated with radar absorbing materials is presented by utilizing physical optics （PO） method and impedance boundary condition （IBC）.Then the dynamic RCS sequences of the stealth aircraft are calculated and the electromagnetic scattering characteristics are analyzed.Ultimately,the model of the radar detection probability is introduced to simulate the dynamic process of the radar detection during the penetration.Theoretical analysis and simulation results indicate that the meter-wave radar is superior to centimeter-wave radar against stealth target.
出处
《计算机仿真》
北大核心
2017年第3期6-10,共5页
Computer Simulation
基金
国家自然科学基金(61372033)
