在强电磁辐射等效噪声模型下,提出了基于蒙特卡罗仿真的强电磁辐射对制导雷达性能影响分析方法。结合LFM制导雷达信号处理模型,分析了强电磁辐射对LFM雷达导引头的目标能量积累效率、距离分辨力、速度分辨力、测角精度等性能参数的影响。仿真结果表明,强电磁辐射导致LFM雷达上述性能参数严重下降,且恶化程度不仅与等效幅相噪声的强度有关,还与幅相噪声相关性有关。

A novel method based on Monte Carlo simulation was presented for analysis of signal processing performance degeneration of linear frequency modulation (LFM) seeker radar in the radiation of high power microwave (HPM). The influence of HPM on the seeker radar was modeled as equivalent noise random process called equivalent noise process model. According to the signal processing of LFM radar, the radar signal processing performance figures, such as target radar echo integration efficiency, range resolution, velocity resolution and angle measuring precision etc, were theoretically analyzed under HPM radiation interference. The simulations reveal that serious performance degeneration was caused by the strength of equivalent noise process and the amplitude-phase's noise correlation.