两点源诱偏被动雷达导引头性能分析

Performance Analysis of the Dual-Source Decoying Technique Against Passive Radar Seeker

两点源诱偏是对抗反辐射导弹 (ARM)的有效手段。在大型仿真软件SPW上建立了一个比幅比相单脉冲体制的被动雷达导引头 (PRS)模型。利用该模型 ,推导出了在两点源作用下PRS角度测量的解析表达式。分析表明 ,导引头通过数据积累方法可以测得大功率源角度。给出了导引头数据积累测角性能与积累点数之间关系的表达式。根据以上研究 ,提出了在实际情况下为有效诱偏反辐射导弹 ,两点源的脉冲重复频率应满足的条件。仿真结果证实了上述结论的正确性。

The dual sources decoying technique is effective to counteract ARMs. A simulation model for the monopulse passive radar seeker (PRS) is built based on the simulation software tool-SPW. Based on this model, the analytical expression for angle measurement by the PRS is deduced under the interaction of dual sources. It is shown that the PRS can get the angle with high power source by way of data accumulation. The expression describing the relation between the angle-measurement performance and the size of accumulated data is presented. Finally, the conditions which must be satisfied by the pulse repetition frequencies of dual sources in order to decoy the PRS effectively in practical applications are given. All of the above studies have been demonstrated by the simulation results.