t设计分布球形阵列谐波分解波束形成仿真分析
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- 英文论文题名：Beam-forming simulation analysis of spherical array in t-design distribution by harmonic decomposition
- 论文作者：孙乃葳 ; 李建辰 ; 万亚民 ; 李永胜 ; 赵罡 ; 吕维
- 英文论文作者：SUN Nai-wei ; LI Jian-chen ; WAN Ya-min ; LI Yong-sheng ; ZHAO Gang ; Lü Wei ; The 705th Research Institute ; China Shipbuilding Industry Corporation ; Science and Technology on Underwater Information and Control Laboratory
- 年：2016
- 作者机构：中国船舶重工集团公司第七O五研究所;水下信息与控制重点实验室;
- 论文关键词：球形阵 ; 谐波分解 ; t分布 ; 波束形成 ; 指向性
- 英文论文关键词：Sphere array ; Harmonic decomposition ; t-design distribution ; Beam forming ; Directivity
- 会议召开时间：2016-08-21
- 会议录名称：2016’中国西部声学学术交流会论文集
- 语种：中文
- 分类号：TB56;TN911.7
- 学会代码：SXJS
- 会议名称：2016’中国西部声学学术交流会
- 会议地点：中国四川成都
- 主办单位：中国声学学会微声学分会、中国声学学会物理声学分会、陕西省声学学会、浙江省声学学会、山东省声学学会、上海市声学学会、黑龙江省声学学会、水声技术重点实验室、重庆市声学学会、西安市声学学会、四川省声学学会
- 学会名称：《声学技术》编辑部
- 页数：4
- 文件大小：577k
- 原文格式：D
- 会议级别：全国
摘要
本文针对常规阵列信号处理方法的波束指向性受阵列尺寸限制的问题,提出用球谐波分解方法实现t设计分布的球形体积阵列的超指向性波束形成。基于水声传感器阵列的实际科研应用,首先建立球谐波模态重构的数学模型,其次修正刚性球入射声场的声压,提高模型在实际中的适用性,最后对t设计分布采样的20元刚性球形阵列进行谐波分解波束形成。仿真与理论推导的结果相一致,结果表明,能够获得优于常规波束形成的波束指向性,当谐波分解阶数为2阶时,波束形成性能最佳。
According to the situation of beam forming directivity index(DI) is limited by array size by conventional array signal processing method, one ultra-directivity beam forming method by spherical harmonic decomposition is introduced for rigid spherical volume array in t-design distribution in this paper. Reference to practical application of underwater acoustic sensor array, firstly, a mathematical model based on spherical harmonic modal reconstruction is built. Then the sound pressure of incident sound field is revised, therefore the applicability of the model in practice is improved.Finally beam-forming of 20 sensors array in t-design distribution on rigid spherical by harmonic decomposition is conducted. The simulation results are consistent with the basic theory, the result shows that directivity performance which is superior to conventional beam-forming is obtained and the optimum beam-forming performance is obtained when the harmonic decomposing order is 2.
According to the situation of beam forming directivity index(DI) is limited by array size by conventional array signal processing method, one ultra-directivity beam forming method by spherical harmonic decomposition is introduced for rigid spherical volume array in t-design distribution in this paper. Reference to practical application of underwater acoustic sensor array, firstly, a mathematical model based on spherical harmonic modal reconstruction is built. Then the sound pressure of incident sound field is revised, therefore the applicability of the model in practice is improved.Finally beam-forming of 20 sensors array in t-design distribution on rigid spherical by harmonic decomposition is conducted. The simulation results are consistent with the basic theory, the result shows that directivity performance which is superior to conventional beam-forming is obtained and the optimum beam-forming performance is obtained when the harmonic decomposing order is 2.
引文
[1]刘伯胜,雷家煜.水声学原理[M].哈尔滨:哈尔滨工程大学出版社,2009
[2]S.Yan,H.Sun,U.P.Svensson,X.Ma,and J.M.Hovem.”Optimal modal beam-forming for spherical microphone arrays”IEEE Trans.Audio Speech Lang.Process.,vol.19,no.2,pp.361–371,Feb.2011.
[3]蒋伟.小尺度传感器阵列超指向性研究及实现.西北工业大学硕士学位论文,2007
[4]鄢社锋,侯朝焕,马晓川.采从阵元域到模态域阵列信号处理.声学学报,2011
[5]Jens Meyer and Gary Elko,”A highly scalable spherical microphone array based on an orthogonal decomposition of the sound field”,IEEE ICASSP,pp.1781-1784,2002
[6]Boaz Rafaely,”Analysis and Design of Spherical Microphone Arrays”,IEEE Transaction on Speech and Audio Processing,Vol.13,NO.1,Jan.2005
[7]甘甜,王英民,赵俊渭.模态分解的波束形成方法研究.兵工学报,2011
[8]甘甜,王英民,赵俊渭.模态分解的波束形成方法研究.兵工学报,2011.
[9]宋沫飞,孙正兴,张尧烨,刘凯,章菲倩.采用单幅草图的正交多面体模型生成方法.计算机辅助设计与图形学学报,2012
[2]S.Yan,H.Sun,U.P.Svensson,X.Ma,and J.M.Hovem.”Optimal modal beam-forming for spherical microphone arrays”IEEE Trans.Audio Speech Lang.Process.,vol.19,no.2,pp.361–371,Feb.2011.
[3]蒋伟.小尺度传感器阵列超指向性研究及实现.西北工业大学硕士学位论文,2007
[4]鄢社锋,侯朝焕,马晓川.采从阵元域到模态域阵列信号处理.声学学报,2011
[5]Jens Meyer and Gary Elko,”A highly scalable spherical microphone array based on an orthogonal decomposition of the sound field”,IEEE ICASSP,pp.1781-1784,2002
[6]Boaz Rafaely,”Analysis and Design of Spherical Microphone Arrays”,IEEE Transaction on Speech and Audio Processing,Vol.13,NO.1,Jan.2005
[7]甘甜,王英民,赵俊渭.模态分解的波束形成方法研究.兵工学报,2011
[8]甘甜,王英民,赵俊渭.模态分解的波束形成方法研究.兵工学报,2011.
[9]宋沫飞,孙正兴,张尧烨,刘凯,章菲倩.采用单幅草图的正交多面体模型生成方法.计算机辅助设计与图形学学报,2012