第42卷第5期Vol.42,No.52023年9月JournalofAppliedAcousticsSeptember,2023⋄研究报告⋄Burst模式在多波束声呐高帧率测深方法中的应用符晓磊夏伟杰†赵宇凡(南京航空航天大学电子信息工程学院南京211106)摘要:在常规多波束测深声呐系统中,需要等待远距离目标信号到达接收基阵后才能再次发射探测信号,这将导致测深帧率下降。针对该问题,该文提出了一种基于Burst模式的多波束声呐高帧率测深方法。由于各角度的海底回波持续时间远小于远距离目标信号到达接收基阵的所需时间,根据这一特性,采用Burst模式,通过等间隔地发射多帧信号并接收,同时保证发射的间隔大于最大波束持续时间,实现多帧信号在时间角度域中的分离,提高测深系统帧率。由于相邻帧的隧道效应会与部分波束发生重叠,针对该问题采用改进的线性约束最小方差算法,实现了低副瓣宽零陷的波束形成,从而削弱隧道效应的影响。最后通过仿真数据验证了该文所提方法的有效性,表明该方法在特定条件下能够将测深帧率提高3.3倍。关键词:多波束测深声呐;高帧率;线性约束最小方差算法;隧道效应中图法分类号:TB566文献标识码:A文章编号:1000-310X(2023)05-1015-09DOI:10.11684/j.issn.1000-310X.2023.05.015TheapplicationofBurstmodeinmethodofthemulti-beamhighframeratebathymetryFUXiaoleiXIAWeijieZHAOYufan(CollegeofElectronicalandInformationEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing211106,China)Abstract:Intheconventionalmulti-beambathymetrysystem,itisnecessarytowaitfortheremotetargetsignalstoreachreceivingarraybeforere-launchingtheprobesignals,whichleadstothedecreaseofthebathymetryframerate.Intermsofthisissue,amethodofthemulti-beamhighframeratebathymetryisproposedonthebasisofBurstmode.Thedurationofthesubmarineechoateachangleismuchlessthanthetimerequiredfortheremotesignalsarrival.Accordingtothisfeature,theBurstmodeisadoptedwhichtransmitsmultipleframesofsignalsatequalintervalsandthenreceivesthem,ensuringthatthetransmissionintervalislargerthanthemaximumbeamdurationsimultaneously.Itcanrealizetheseparationofmulti-framesignalsinthetimeandangledomain,andimprovetheframerateofthebathymetrysystem.Sincethetunneleffectofadjacentframeswilloverlapwithsomepartbeams,animprovedlinearlyconst...