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Detection of chaff centroid jamming aided by GPS/INS

机译:GPS / INS辅助检测谷壳质心干扰

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摘要

Chaff centroid jamming released by vessel makes the target indicated azimuth angle of radar seeker of anti-ship missile bias off the target. The failure to detect the presence of chaff centroid jamming is catastrophic to target tracking for the radar seeker. In this study, the authors take the azimuthal in-phase monopulse ratio of radar seeker as test statistic and detect the presence of chaff centroid jamming with the aid of GPS/INS. Probability density functions of the azimuthal in-phase monopulse ratio when jamming is absent and present are derived at first. Then the authors propose a method using the measured information of both GPS/INS and radar seeker to estimate the target off-boresight azimuth angle which is vital for detection threshold setting. Finally, the authors show the performance of the chaff centroid jamming detection by simulations and analyse the effects of some key jamming parameters on detection performance.
机译:舰船释放的箔片质心干扰使目标指示反舰导弹雷达导引头的方位角偏离目标。无法检测到谷壳形质心干扰的存在,对于雷达搜索器的目标跟踪来说是灾难性的。在这项研究中,作者将雷达导引器的方位同相单脉冲比作为测试统计量,并借助GPS / INS来检测谷壳形质心干扰的存在。首先推导不存在干扰时存在的方位同相单脉冲比的概率密度函数。然后,作者提出了一种利用GPS / INS和雷达导引器的测量信息来估算目标离轴方位角的方法,这对于检测阈值的设置至关重要。最后,作者通过仿真展示了谷壳质心干扰检测的性能,并分析了一些关键干扰参数对检测性能的影响。

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