| 基于平面声全息的全空间场变换:Ⅰ.原理与算法 |
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| 引用本文： | 何元安, 何祚镛. 基于平面声全息的全空间场变换:Ⅰ.原理与算法[J]. 声学学报, 2002, 27(6): 507-512. DOI: 10.15949/j.cnki.0371-0025.2002.06.006 |
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| 作者姓名： | 何元安 何祚镛 |
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| 作者单位： | 1.哈尔滨工程大学水声所 哈尔滨 150001 |
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| 基金项目： | 国家计量项目和国家自然科学基金资助项目（10174018） |
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| 摘 要： | 首先证明了NAH变换中两种Green函数变换关系式对最终的场变换结果的一致性,给出了NAH变换中主要参数之间的定量关系式,进行了滤波窗的性能优化分析。利用NAH变换与Helmholtz积分,提出了改进的远场指向性快速计算方法,与DRL方法相比,该方法对声源形状的适应性更强,计算精度更高。
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| 收稿时间： | 2000-12-20 |
| 修稿时间： | 2001-11-30 |
Full spatial transformation of sound field based on planar acoustic holography: I. Principle and algorithm |
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| HE Yuanan, HE Zuoyong. Full spatial transformation of sound field based on planar acoustic holography: I. Principle and algorithm[J]. ACTA ACUSTICA, 2002, 27(6): 507-512. DOI: 10.15949/j.cnki.0371-0025.2002.06.006 |
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| Authors: | HE Yuanan HE Zuoyong |
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| Affiliation: | 1.Institute of Underwater Acoustics, Harbin Engineering University Harbin 150001 |
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| Abstract: | It is demonstrated that the two forms of Green function in NAH technique give the same final results of sound field transformation. The quantitative relationships between the main parameters in NAH technique are deduced. The performance analysis of various filters is conducted. The methods for quickly calculating of the far-field directionality are given by use of the NAH field transformation and Helmholtz integration. Compared with DRL method, it is more applicable and precise for various acoustics sources. |
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