交叉眼干扰是目前对抗单脉冲雷达的有效方式,为深入研究交叉眼干扰机理,对其形成的波前相位畸变特性进行了分析。根据相干叠加原理提出了一种基于相位畸变理论的模型,对干扰信号带来的指示角误差进行了计算;通过将波前相位畸变模型得到的结果与传统的几何分析模型进行对比验证,将干扰单元接收信号的幅度比作为研究重点,对波前相位畸变的模型进行了修正。结果表明:修正后的波前相位畸变的分析模型与传统几何分析结果一致,验证了波前相位畸变模型的准确性,为交叉眼干扰天线的参数优化建立了基础。

Cross-eye jamming is an effective measure for countering monopulse radar. The wave-front phase distortion characteristics of cross-eye jamming are analyzed to have an in-depth study. Based on the coherent stack principle of wave, the phase distortion model of cross-eye jamming is obtained. Then, on the basis of the model, the indication angle error brought by the interference signal is calculated. By comparing the wave-front phase distortion model with the traditional geometrical analysis model, the amplitude ratio of the received signal of the jammer unit is compared as the research emphasis, and the wave-front phase distortion model is corrected. The verification results show that the analysis of wave-front phase distortion is consistent with the traditional geometrical analysis, which verifies the accuracy of wave-front phase distortion model, and establishes foundation for further research about the optimization of antenna parameters.

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