飞机动态 RCS序列的仿真研究

飞机动态 RCS序列的仿真研究

内容简介：针对飞机实际飞行中的各种随机抖动，提出了一种飞机动态RCS序列仿真方法。首先采用飞机缩比模型的激光测量尺寸在FEKO中建立精确电磁计算模型，得到了飞机全空域静态RCS数据。在运动建模中先设定飞行航迹，推算出飞行过程中飞机的姿态角变化，叠加实际飞行中随机抖动的影响，使得运动建模更加贴近实际。仿真结果表明：叠加随机抖动后的动态RCS与初始值相差3 dB的点数占总数的17．5％，该方法对雷达目标动态特性的仿真研究具有重要的参考价值。

Abstract：Considering the random jitter of a flying aircraft,a simulation method for dynamic RCS series of aircraft was proposed .An electromagnetic calculation model of the aircraft based on scaling model size was established in FEKO,and the all-space static RCS was obtained .After the flight path was simulated and the attitude angle of the aircraft in flight was calculated out,the dynamic RCS series of the aircraft flying with random jitter were obtained .Random jitter was considered in movement modeling to make movement more realistic.The simulation results show that there are 17.5% points that have 3 dB or above difference with the initial RCS value after considering the effect of the random jitter .The presented method is beneficial to the study of dynamic characteristics of radar targets .

作者：庄亚强, 张晨新, 周超, 张小宽,

关键词：雷达散射截面, RCS, 动态雷达散射截面, 随机抖动, 坐标转换, 仿真