摘要
针对电子对抗环境下,雷达信号易被无源探测系统截获的问题,研究远距支援干扰对无源探测系统干涉仪测向的影响机理。首先,建立多辐射源条件下干涉仪测向的模型并给出测向误差的理论公式,然后分析远距支援干扰对无源探测系统干涉仪测向结果的影响,最后通过数值仿真验证该理论推导。仿真结果表明在信噪比为5 dB时,当干扰信号功率低于雷达信号功率3 dB时,干涉仪的测向误差超过11°,雷达系统可实现低截获概率的性能。
Aiming at the problem that radar signal is easy to be intercepted by passive detection system in electronic countermeasure environment,the influence mechanism of stand-off jamming on interferometer is studied.Firstly,the model of interferometer under the condition of multiple radiation sources is established,and the formula of direction finding error is given.Then,the in-fluence of stand-off jamming on direction finding results of interferometer is analyzed.Finally,the derivation is verified by numerical simulation.The simulation results show that when the sig-nal-to-noise ratio is 5dB and the jamming signal power is lower than the radar signal power by 3dB,the direction finding error of the interferometer exceeds 11°,and the performance of low in-terception probability could be achieved by the radar system.
作者
曾小东
ZENG Xiaodong(The 10th Research Institute of China Electronics Technology Group Corporation,Chengdu 610036,China)
出处
《电子信息对抗技术》
北大核心
2022年第2期18-20,43,共4页
Electronic Information Warfare Technology
关键词
远距支援干扰
干涉仪
测向误差
stand-off jamming
interferometer
direction finding error
