摘要
为研究体系作战条件下地基雷达组网和预警机结合探测隐身飞机能力,基于隐身飞机三维建模并计算雷达散射截面积(Radar Cross Section,RCS),分析了隐身飞机突防过程中不同时刻雷达探测性能变化情况。首先,采用专业软件建立了某型隐身飞机三角面元模型,采用物理光学法(Physical Optics,PO)计算了飞机RCS。其次,建立了雷达坐标系与飞机机身坐标系转换关系,计算了不同时刻机身坐标系中雷达照射角度。最后,通过构建隐身飞机突防模型,研究不同时刻地基雷达组网和预警机联合探测隐身飞机的雷达探测距离和探测概率变化情况。仿真结果表明,地基雷达组网和预警机能够有效利用隐身飞机侧向、后方和上方RCS较大(10~20 dB)的特点,其中,预警机最大探测距离达151 km,平均探测距离在80 km左右,地基雷达组网的平均距离探测为50 km左右,对隐身飞机具有良好探测能力。
In order to study the capabilities of ground-based radar netting and early warning aircraft(AWACS)for detecting stealth aircraft under system operation conditions,by calculating the radar cross section(RCS)of stealth aircraft based on 3D modeling,the change of radar detection performance of stealth aircraft at different time during penetration is analyzed.At first,the triangular panel model of a stealth aircraft is established by using professional software,and the RCS of the stealth aircraft is calculated by Physical Optics(PO)method.Secondly,the conversion relationship between the radar coordinate system and the aircraft fuselage coordinate system is established,and the radar illumination angles in the fuselage coordinate system at different times are calculated.Finally,by modeling stealth aircraft penetration model,the radar detection range and detection probability of stealth aircraft detected by radar network and AWACS at different times are studied.The simulation results show that the ground-based radar netting and early warning system can effectively utilize the large RCS of the stealth aircraft(10~20 dB).The maximum detection distance of early warning aircraft is 151 km,and the average detection distance is about 80 km,the average detection distance of ground-based radar network is about 50 km.
作者
姬伟杰
JI Weijie(Xi’an Flying College of PLA Air Force,Xi’an 710306,China)
出处
《电讯技术》
北大核心
2023年第8期1133-1138,共6页
Telecommunication Engineering
关键词
体系作战
隐身飞机
雷达组网
预警机
突防模型
system operation
stealth aircraft
radar netting
early warning aircraft
penetration model
