文档名：雷达带外三阶互调伪信号干扰效应预测模型
摘要：为评估雷达装备的抗电磁干扰性能,从电磁辐射伪信号干扰效应机理出发,理清带外多频三阶互调信号与带内单频伪信号干扰效应贡献度之间的关联关系,引入伪信号干扰效应指数的概念,建立了三阶互调伪信号干扰效应评估模型,并基于伪信号电平值的变化规律提出了模型修正方法和效应测试预测流程.以某型步进频连续波测距雷达为研究对象,采用差模注入等效替代电磁辐射的方法对受试雷达进行带外三阶互调临界伪信号干扰效应试验,结果表明:在雷达工作中心频率两侧,辐射频偏0.2～2.2GHz的范围内,随着辐射频偏的增大,三阶互调伪信号干扰的影响呈现先增大而后降低的规律.通过改变干扰频点、场强组合和伪信号敏感电平的方式开展试验验证,证明了三阶互调伪信号干扰模型的准确度优于2dB,能够客观评估雷达装备三阶互调伪信号干扰.
Abstract：Inordertoevaluatetheanti-electromagneticinterferenceperformanceofradarequipment,basedonthemechanismofpseudo-signalinterferenceeffectofelectromagneticradiation,therelationshipbetweenthecontributionofout-of-bandmulti-frequencythird-orderintermodulationsignalandin-bandsingle-frequencypseudo-signalinterferenceeffectisclarified,andtheconceptofpseudo-signalinterferenceeffectindexisintroduced.Theevaluationmodelofthird-orderintermodulationpseudo-signalinterferenceeffectisestablished,andthemodelcorrectionmethodandeffecttestpredictionprocessareproposedbasedonthechangeruleofpseudo-signallevelvalue.Takingastepped-frequencycontinuouswaverangingradarastheresearchobject,theout-of-bandthird-orderintermodulationcriticalpseudo-signalinterferenceeffecttestofthetestedradariscarriedoutbyusingthemethodofdifferentialmodeinjectionequivalentsubstitutionofelectromagneticradiation.Theresultsshowthattheinfluenceofthethird-orderintermodulationpseudo-signalinterferenceincreasesfirstandthendecreaseswiththeincreaseoftheradiationfrequencyoffsetintherangeof0.2-2.2GHzonbothsidesoftheradarworkingcenterfrequency.Theexperimentalverificationiscarriedoutbychangingtheinterferencefrequencypoint,fieldstrengthcombinationandpseudo-signalsensitivelevel.Itisprovedthattheaccuracyofthethird-orderintermodulationpseudo-signalinterferencemodelisbetterthan2dB,whichcanobjectivelyevaluatethethird-orderintermodulationpseudo-signalinterferenceofradarequipment.
作者：魏光辉 赵宏泽 杜雪 潘晓东 吕旭旭Author：WEIGuanghui ZHAOHongze DUXue PANXiaodong LYUXuxu
作者单位：陆军工程大学电磁环境效应重点实验室,石家庄050003
刊名：电波科学学报
Journal：ChineseJournalofRadioScience
年，卷(期)：2024, 39(2)
分类号：O441
关键词：雷达装备 三阶互调 电磁辐射 伪信号干扰 效应评估
Keywords：radarequipment third-orderintermodulation electromagneticradiation pseudo-signalinterference effectevaluation
机标分类号：TN957.51F746F114.46
在线出版日期：2024年5月11日
基金项目：国防基础科研重点项目，重点实验室基金雷达带外三阶互调伪信号干扰效应预测模型[
期刊论文] 电波科学学报--2024, 39(2)魏光辉 赵宏泽 杜雪 潘晓东 吕旭旭为评估雷达装备的抗电磁干扰性能,从电磁辐射伪信号干扰效应机理出发,理清带外多频三阶互调信号与带内单频伪信号干扰效应贡献度之间的关联关系,引入伪信号干扰效应指数的概念,建立了三阶互调伪信号干扰效应评估模型,并...参考文献和引证文献
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