摘要
为研究电子干扰掩护条件下隐身飞机低空、超低空突防战术作战效能,基于某典型隐身飞机动态雷达散射截面(radar cross section,RCS)和地面对电磁波的反射效应,研究了低空突防战术对雷达探测性能的影响.首先,采用坐标转换矩阵计算不同时刻雷达照射飞机角度,通过高频近似算法计算突防过程中飞机的动态RCS序列;其次,引入雷达和干扰机天线方向图传播因子F和Fj,表征地面对电磁波的反射效应,推导雷达方程,得到雷达探测距离和探测概率;最后,针对构建的隐身飞机突防场景,通过计算机进行仿真,分析飞行高度、地面起伏等参数变化对雷达探测性能的影响.仿真结果表明,在电子干扰掩护下,利用隐身飞机在鼻锥方向的低可探测性能,采用低空、超低空突防战术能显著降低雷达对隐身飞机的探测性能,而地面反射效应对雷达探测性能具有明显影响.研究结果可为作战训练中灵活运用该战术提供理论参考.
In order to study the effectiveness of low-altitude and ultra-low-altitude penetration of stealth aircraft under the condition of electronic jamming,the influence of low altitude penetration tactics on radar detection performance is studied based on the dynamic radar cross section(RCS)of a typical stealth aircraft and the reflection effect of the ground on electromagnetic waves.Firstly,the RCS of the aircraft is calculated by using the coordinate transformation matrix and the high frequency approximation algorithm.Secondly,the radar and jammer antenna pattern propagation factors F and Fj are introduced to characterize the reflection effect of the ground to the electromagnetic wave,and the radar equation is derived to obtain the radar detection range and detection probability.Finally,the stealth aircraft penetration scene is simulated,and the influence of parameters such as flight altitude and ground undulation on radar detection performance is analyzed.The simulation results show that the low-altitude and ultra-low-altitude penetration tactics can significantly reduce the detection performance of radar to stealth aircraft,and the ground reflection effect has an obvious impact.The research results can provide a theoretical reference for the flexible application of the tactics in combat training.
作者
姬伟杰
JI Weijie(Air Force Xi’an Flying College,Xi’an 710306,China)
出处
《电波科学学报》
CSCD
北大核心
2023年第2期318-324,共7页
Chinese Journal of Radio Science
关键词
隐身飞机
低空突防
电子干扰
stealth aircraft
low-altitude penetration
electronic jamming
