欢迎来到天天文库
浏览记录
ID:36372204
大小:3.65 MB
页数:130页
时间:2019-05-10
《空气中声源产生的水下声场建模与分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、西北工业大学博士学位论文空气中声源产生的水下声场建模与分析姓名:张翼鹏申请学位级别:博士专业:水声工程指导教师:马远良20070301声信号,实验测量的平均传播损失与理论预测基本一致。关键词:空气声波透射入水,快速场模型,波数积分模型,运动介质中的快速场模型,运动声源声场建模IIABSTRACTThe∞search∞air.to.watef窨。衄d仃缸Ismissionis岱删aIfordesigning岫derwa船acousticsyst鼬todetect8iI慨targ既T挝sdi删ionstlldi嚣ma瑚ythe瑚ld钉water杈埘嘶cmodelingmetholdsfbfa
2、irbome∞uroe.Then,血e∞models撕璐edtostIIdytlle啪d绷teraco戚cfiddcharjlct两stics.1kmaincon晡b嘶。璐a坞aslblIows:(1)RaymethodisusedtomodeIthe州fhc同so吼dindeepwa把r;inadditionthelateral啪veintroducedbywaveme血0disdi∞璐sed.Then’thedil.僦靴Lve删mb凹in:cc蓼ationmodelisdeduced.nismuchp嗽ise'蚰d咖bcllscdto01,tainabenchmafkleslIIt.
3、(2)Af;塔tfield舯Dgram(FFP)isdevcl叩edtocalcuIaten掂shallowwa由盯acoustic丘eld既citedbyair_bomesourcc.Anditis劭【tclldedtoh粕棚etheeIasdcb‘啪咖alvi∞衄如t.The蠡st丘eidpI捌吕舢isalso嗽ndedtoincludemoVingm酣ia,andusedto锄lyzetheinn啪ceofn嵋诚ndandsoundspecdp∞fileina扯晰lhn坞∞modeIs'the孙旧rage仃鲫胁issionlossinsbmlowwal%衄dtheinIIuen∞o
4、fthesourceheighttogcther嘶ththelateralwwea∞stl_1died.(3)Atwo.din”nsi∞alwaVenmnb盯integrationmodelisdevtdoped置brtheIlnderw栅∞o删c丘cldofaifbomerapid王ymo、,iI喀∞埘∞.Atf缸矗e地its咄djm黜匝彻Ialap删ma土ionisd“Iuced.F钟也ec8∞主nwhicha∞u∞e仃戳Ikisp鲢s.mgav留≤k阳画懈.afagc丘eldprogramis如vebDped.Theac叫s£ic矗led主ndeepw姗and曲mlowwa钯ra∞
5、studied州ththe∞models.IIldeepwatel;bo也曲峙锄印Iimdeandthe矗即encyofthereceivcdsi印alch觚ge稍thtime.Thechange豫leisa妇『ected蚵出ef∞eiVef出事胁,tbe∞urcebejghtandlhem施啪horizontal船Dgek帆V啪tbe∞llr∞andtlle豫ceiv瓯lnsllallowwatef,tlle锄叩litIldeofthereceivedsi印aIn眦tuatcsquicl(1弘也eDopplcrslliftis喇de蝇锄dthespcc㈣broadeningissigI
6、li矗c蛳t.Fllnhe肋。坩,tlledi仃brentpat:hsmaybes印撒tedinthetime·行equ%cypl黜.TkDoppIer丘叼∞ncysbiRofmelat蒯waVeismuchl哪cf出缸也eoneoflhe豫缸ctedwave,锄disconsistent晰ththes咖alinmeair.(4)T如e)【perimentsa坞pe哟咖cdtosmdy也eac0IIstic丘eldinw缸盯{
7、or也eaif蛔eso埘优Thefilstonejs山eair-to删ers咖d缸锄蜥sSiona【perim吼t,whichlII缸删edo眦in锄echoic
8、t雅l(.Tllis∞(p烈im艘tcc嘶m垮thelmden例b贫∞蚰dck咙Icl威sticpfedictedbytlletIleofy.Thesecondexperhnentisperfo锄edinY-缸gliIlgW妇却lo如C如t凹£osimula£emeshallowwateracollstic6elde嫡tcdby锄ailfbI啪e∞ur∞.1t峙si鲫laI既cit酣by锄ailbomesour∞isobservcd
此文档下载收益归作者所有