极化捷变干扰对脉冲雷达的时域蒙特卡洛分析
Time-domain monte carlo analysis of polarization-agile jamming against pulse radars
摘要
针对脉冲体制雷达极化抗干扰工程评估需求，在不依赖复杂阵列与频域仿真前提下，从时域极化动态失配机理出发，采用蒙特卡洛随机采样方法，量化慢捷变、脉间捷变、脉内捷变三类极化样式对雷达信噪比（SNR）/信干比（SIR）的影响规律。结果表明：极化捷变干扰效能由捷变速率与雷达脉宽τ、脉冲重复周期（PRI）的相对关系决定，而非绝对速率；脉内捷变最优区间为2/τ＜fj＜10/τ，可使雷达极化滤波改善因子降至3dB以内、检测概率低于0.1；脉间捷变效能随速率提升线性增强；慢捷变易被极化滤波完全抑制。该方法简洁，适合工程快速评估与参数设计。
Abstract
Aiming at the engineering evaluation requirement of polarization anti-jamming for pulse radars, without relying on complex array and frequency-domain simulation, this paper starts from the time-domain polarization dynamic mismatch mechanism, and uses Monte Carlo random sampling method to quantify the influence laws of three polarization-agile patterns（slow-agile, inter-pulse-agile, intra-pulse-agile）on radar signal-to-noise ratio（SNR）signal-to-interference ratio（SIR）. The results show that the effectiveness of polarization-agile jamming is determined by the relative relationship between the agility rate and the radar pulse width τ and pulse repetition interval（PRI）Tr, rather than the absolute rate; the optimal intra-pulse-agile range is 2/τ＜fj ＜ 10/τ, which can reduce the radar polarization filtering improvement factor to less than 3 dB and the detection probability to less than 0.1; the effectiveness of inter-pulse-agile increases linearly with the rate; slow-agile is easily completely suppressed by polarization filtering. The method is concise and suitable for rapid engineering evaluation and parameter design.关键词
信息处理技术/极化捷变/脉冲雷达/时域分析/蒙特卡洛/信干比Key words
information processing technology/polarization-agile/Pulse radar/Time-domain analysis/Monte Carlo/Signal-to-interference ratio引用本文复制引用
邵元正,赵盼,张建涛,鲁植元.极化捷变干扰对脉冲雷达的时域蒙特卡洛分析[EB/OL].(2026-06-23)[2026-06-25].http://www.paper.edu.cn/releasepaper/content/202606-66.学科分类
雷达/电子对抗
