·雷达系统与技术·DOI:10．16592/j．cnki．1004－7859．2022．12．017子阵级密集MIMO阵列性能分析及试验验证孙斌*1，张二伟2，王久友2，黄璐1，华煜明1(1．北京跟踪与通信技术研究所，北京100094)(2．南京电子技术研究所，南京210039)摘要:相比单元级密集多输入多输出(MIMO)阵列的处理复杂度，子阵级密集MIMO阵列更具工程应用前景。针对已有文献分析均基于单元级密集MIMO阵列的不足，文中首先理论推导出了子阵级密集MIMO阵列的归一化方向图函数，然后阐述了其与单元级密集MIMO阵列在虚拟孔径形成上的本质差异，并分别与单元级密集MIMO阵列和相控阵(PA)进行了信噪比、测角精度和角分辨率等性能的对比分析，最后搭建试验平台验证了理论分析的正确性。关键词:密集多输入多输出阵列;单元级;子阵级;测角精度;角分辨率;虚拟孔径中图分类号:TN957文献标志码:A文章编号:1004－7859(2022)12－0112－06引用格式:孙斌，张二伟，王久友，等．子阵级密集MIMO阵列性能分析及试验验证［J］．现代雷达，2022，44(12):112－117．SUNBin，ZHANGErwei，WANGJiuyou，etal．Performanceanalysisandexperimentalverificationforco-locatedMI-MOradaratsubarraylevel［J］．ModernＲadar，2022，44(12):112－117．PerformanceAnalysisandExperimentalVerificationforCo-locatedMIMOＲadaratSubarrayLevelSUNBin*1，ZHANGErwei2，WANGJiuyou2，HUANGLu1，HUAYuming1(1．BeijingInstituteofTrackingandTelecommunicationTechnology，Beijing100094，China)(2．NanjingＲesearchInstituteofElectronicsTechnology，Nanjing210039)Abstract:Comparedwiththeprocessingcomplexityofunitlevelco-locatedmultipleinputmultipleoutput(MIMO)array，subarraylevelco-locatedMIMOarrayhavemorepromisingengineeringapplications．Inviewoftheshortcomingsofexistingliteratureanaly-sisbasedoncelllevelco-locatedMIMOarray，thenormalizedantennapatternfunctionofco-locatedMIMOradaratsubarraylevelisderivedtheoretically．Then，theessentialdifferencesinvirtualapertureformationbetweensubarraylevelco-locatedMIMOarrayandunitlevelco-locatedMIMOarrayisresearched．Theperformancesuchassignal-to-noiseratio，anglemeasurementaccuracyandangularresolutioniscomparedbetweensubarraylevelco-locatedMIMOarray，celllevelco-locatedMIMOarrayandphasedar-ray(PA)too．Fi...
