典型文献
Beam alignments based on the spectrum decomposition of orbital angular momentums for acoustic-vortex communications
文献摘要：
Given the enhanced channel capacity of wave chirality,acoustic communications based on the orbital angular mo-mentum(OAM)of acoustic-vortex(AV)beams are of significant interest for underwater data transmissions.However,the stringent beam alignment is required for the coaxial arrangement of transceiver arrays to ensure the accuracy and relia-bility of OAM decoding.To avoid the required multiple measurements of the traditional orthogonality based algorithm,the beam alignment algorithm based on the OAM spectrum decomposition is proposed for AV communications by using simplified ring-arrays.Numerical studies of the single-OAM and OAM-multiplexed AV beams show that the error of the OAM spectrum increases with the translation distance and the deflection angle of the transceiver arrays.To achieve an ideal arrangement,two methods of the single-array translation alignment and the dual-array deflection alignment are developed based on the least standard deviation of the OAM spectrum(SD-OAM).By decreasing the SD-OAM towards zero using transceiver arrays of 16 transmitters and 16 receivers,accurate beam alignments are accomplished by multiple adjustments in three dimensions.The proposed method is also demonstrated by experimental measurements of the OAM dispersion and the SD-OAM for misaligned beams.The results demonstrate the feasibility of the rapid beam alignment based on the OAM spectrum decomposition by using simplified transceiver ring-arrays,and suggest more application potentials for acoustic communications.
文献关键词：
中图分类号：
作者姓名：
Gepu Guo;Xinjia Li;Qingdong Wang;Yuzhi Li;Qingyu Ma;Juan Tu;Dong Zhang
作者机构：
School of Computer and Electronic Information,Nanjing Normal University,Nanjing 210023,China;Haiying Enterprise Group Co.,Ltd.,Wuxi 214061,China;College of Ocean Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Institute of Acoustics,Nanjing University,Nanjing 210093,China
文献出处：
引用格式：
[1]Gepu Guo;Xinjia Li;Qingdong Wang;Yuzhi Li;Qingyu Ma;Juan Tu;Dong Zhang-.Beam alignments based on the spectrum decomposition of orbital angular momentums for acoustic-vortex communications)[J].中国物理B（英文版）,2022(12):464-472
A类：
momentums
B类：
Beam,alignments,spectrum,decomposition,orbital,angular,acoustic,vortex,communications,Given,enhanced,channel,capacity,wave,chirality,OAM,AV,beams,are,significant,interest,underwater,data,transmissions,However,stringent,required,coaxial,arrangement,transceiver,arrays,ensure,accuracy,relia,decoding,To,avoid,measurements,traditional,orthogonality,algorithm,proposed,by,using,simplified,Numerical,studies,single,multiplexed,show,that,error,increases,translation,distance,deflection,angle,achieve,ideal,two,methods,dual,developed,least,standard,deviation,By,decreasing,towards,zero,transmitters,receivers,accurate,accomplished,adjustments,three,dimensions,also,demonstrated,experimental,dispersion,misaligned,results,feasibility,rapid,suggest,more,application,potentials
AB值：
0.435902
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