柱面内声全息技术在声源识别与定位中的应用  

Application of Cylindrical Interior NAH in the Identification and Localization of Sound Sources

作　　者：李卫兵[1] 陈剑[1] 于飞[1] 陈心昭[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院

出　　处：《农业机械学报》2005年第4期103-106,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号 :5 0 2 75 0 44 );高等学校博士学科点专项科研基金资助项目(项目编号:2 0 0 2 0 3 5 90 0 5 );教育部科学技术研究重点项目(项目编号 :0 2 12 6)

摘　　要：介绍了柱面内声全息技术的基本原理,对其实施过程中的数据采集、算法实现和滤波等关键技术进行了研究;并通过数值仿真的形式研究了该技术在柱形声源内辐射声场的重建,柱形声源的识别和定位过程中的有效性、可行性和准确性。研究的结果表明,柱面内声全息技术在柱形声源内辐射声场的重建。The principle of the cylindrical interior nearfield acoustic holography (NAH) was presented and adopted to analyze the sound field generated by cylindrical sources. In addition, some key techniques such as the data acquisition, algorithm and filtering were also described to implement the acoustic holography. The numerical simulations have been conducted to illustrate the validity, feasibility and correctness of the cylindrical interior NAH in the reconstruction of the interior sound field, identification and localization of the cylindrical sound sources. The results of the numerical simulations showed the merits of the cylindrical interior NAH in the reconstruction of the interior sound field, identification and localization of the cylindrical sound sources.

关 键 词：声全息技术 声源识别 面内 应用 辐射声场 基本原理 数据采集 关键技术 算法实现 数值仿真 定位过程 柱形 准确性 重建 

分 类 号：TB877.2[一般工业技术—摄影技术] TB533.2[理学—物理]