船舶水下典型物理场低频线谱特征相关性研究姜润翔1,王嘉睿1,朱岿1,张伽伟2(1.海军工程大学电气工程学院,湖北武汉,430033;2.海军工程大学兵器工程学院,湖北武汉,430033)摘要:为了研究水下典型物理场低频线谱的特征和相关性,首先研制了集声场、电场、磁场和压力场测量功能于一体的水下联合测量装置;其次在某海域完成了海上试验,获取了30余艘不同目标的水下物理场信号;最后基于实测数据分析了典型船舶声场、电场、磁场、压力场100Hz以下频段低频线谱特征的相关性。分析结果表明:低频压力信号与低频声场的线谱特征具有强相关和共源特性;低频声场、压力场的线谱与低频电场信号的线谱在部分频点存在相关性和共源性,这为基于水下物理场联合探测与识别目标提供了新的思路。关键词:舰船;声场;电场;磁场;压力场;线谱中图分类号:U674;TJ630.34文献标识码:A文章编号:2096-3920(2023)04-0588-05DOI:10.11993/j.issn.2096-3920.2023-0057CorrelationofLow-FrequencyLineSpectrumCharacteristicsofUnderwaterTypicalPhysicalFieldsofShipsJIANGRunxiang1,WANGJiarui1,ZHUKui1,ZHANGJiawei2(1.SchoolofElectricalEngineering,NavalUniversityofEngineering,Wuhan430033,China;2.SchoolofOrdnanceEngineering,NavalUniversityofEngineering,Wuhan430033,China)Abstract:Tostudythecorrelationoflow-frequencylinespectrumcharacteristicsofunderwatertypicalphysicalfields,anunderwaterjointmeasuringdevicewasdeveloped,whichintegratedthemeasurementfunctionsofacousticfield,electricfield,magneticfield,andpressurefield.Secondly,theunderwaterphysicalfieldsignalsofmorethan30shipswithdifferenttargetswereobtainedthroughtestsinaseaarea.Finally,basedonthemeasureddata,thecorrelationbetweenthelow-frequency(below100Hz)linespectrumcharacteristicsoftheacousticfield,electricfield,magneticfield,andpressurefieldoftypicalshipswasanalyzed.Theresultsshowthatthelinespectrumcharacteristicsoflow-frequencypressuresignalandlow-frequencyelectricfieldarestronglycorrelatedandhavecommonsources.Thelinespectraofthelow-frequencyacousticfield,pressurefield,andlow-frequencyelectricfieldsignalarecorrelatedandhavecommonsourcesatsomefrequencypoints,whichprovidesanewideaforthejointdetectionandidentificationoftargetsbasedonunde...
