一种脉冲重复间隔固定序列快速检测方法樊甫华*史英春秦立龙(国防科技大学电子对抗学院合肥230037)摘要：针对脉冲混迭造成的脉冲重复间隔(PRI)固定序列检测以及PRI估计困难的问题，该文提出一种基于平面变换的PRI固定序列快速检测方法。该方法通过脉冲到达时间(TOA)对平面宽度的整数取余运算，只需1次时域变换处理即可生成PRI固定序列平面变换点迹的周期性图形(PGPTP)；之后依据点迹图形模式的差异实现多个TOA交错的PRI固定脉冲序列的判定，并结合点迹图形纵向展开周期和平面宽度逐一估计出PRI值，进而实现密集信号环境下PRI固定脉冲序列分选。仿真实验验证了该方法的有效性以及高效、实用等优点。关键词：信号分选；序列检测；平面变换点迹；PRI估计中图分类号：TN974文献标识码：A文章编号：1009-5896(2023)04-1293-10DOI:10.11999/JEIT220127AMethodofFastDetectingSequenceforStablePulseRepetitionIntervalFANFuhuaSHIYingchunQINLilong(CollegeofElectronicEngineering,NationalUniversityofDefenseTechnology,Hefei230037,China)Abstract:InlightofdifficultiesindetectingstablePulseRepetitionInterval(PRI)sequenceandestimatingitsPRIininterleavingpulsestream,afastdetectingmethodbasedonplanetransformationisproposedtosolvetheaboveproblems.Byonetime-domaintransform,thePeriodicGraphofPlaneTransformationPointtrace(PGPTP)mappingpulsesequencewithstablePRIisformedviathepresentedmethodperformingintegerremainderoperationonpulseTimeOfArrival(TOA)overplanewidth.AccordingtothedifferencesinpatternofPGPTPgotpreviously,pulsesequenceswithstablePRIsinterleavedinTOAcanbedistinguished,andthenthestablePRIsaregotwithpointtracelongitudinaldeploymentperiodandplanewidthandarethereforeusedtoaccuratelydeinterleavesuchsequencesindensepulsestream.Simulationresultsshowthatthismethodisvalidandpossessedofadvantagessuchashighefficiencyandpracticalapplicability,etc.Keywords:Signaldeinterleaving;Sequencedetecting;Planetransformationpointtrace;PulseRepetitionInterval(PRI)estimation1引言现代战场电磁环境下，电子侦察系统接收的雷达脉冲数每秒可达百万量级，大量的脉冲信号不仅参数上有重叠，而且时域交迭严重，信号分选面临着极大困难[1]。因此，为降低信号密度进行时域稀释处理是十分必要的...
