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角闪烁是现代防空制导武器的主要误差源。针对隐身飞机目标动态角闪烁外场测量难度大、耗时长、精度低的问题,提出了一种基于FEKO软件的雷达目标动态角闪烁特性的实时仿真方法。首先,对雷达坐标系和目标坐标系进行了坐标转换,获得了目标模型飞行随时间变化的方位角和俯仰角;然后,介绍了利用FEKO仿真计算目标动态角闪烁的方法及其步骤;最后,以隐身飞机目标为例,通过该方法仿真获得蛇形机动下的目标实时动态角闪烁特性。仿真结果表明:该方法能获得目标实时电场散射信息,进而计算出目标的角闪烁信息。该研究为防空制导武器抗诱偏、降低脱靶量等方面提供了理论分析和实验依据。
Angle flashing is the main source of error in modern air defense guided weapons. Aimed at the difficulty of measuring the dynamic angular flicker of stealth aircraft in the field, it is difficult, time-consuming and low precision. A real-time simulation method based on FEKO software is proposed. Firstly, the coordinate transformation between the radar coordinate system and the target coordinate system was carried out, and the azimuth and pitch angle of the target model flying over time were obtained. Then, the method and the steps of calculating the dynamic target flicker using FEKO simulation were introduced. Finally, Taking the stealth aircraft target as an example, the real-time dynamic angular flicker characteristics of the target under the serpentine maneuver are obtained by this method. The simulation results show that this method can obtain the target real-time electric field scattering information and then calculate the target angular flashing information. The research provides theoretical analysis and experimental evidences for anti-induced deflection of anti-aircraft guided weapons and reduction of miss distance.