| 二维传声器阵列测量技术及其对飞机进场着陆过程噪声的实验研究 |
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| 引用本文： | 乔渭阳, Ulf Michel. 二维传声器阵列测量技术及其对飞机进场着陆过程噪声的实验研究[J]. 声学学报, 2001, 26(2): 161-168. DOI: 10.15949/j.cnki.0371-0025.2001.02.013 |
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| 作者姓名： | 乔渭阳 Ulf Michel |
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| 作者单位： | 西北工业大学航空动力与热力工程系!西安710072(乔渭阳)，德国宇航院柏林湍流研究分部!德国柏林10623(Ulf Michel) |
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| 摘 要： | 发展了一种由111个传声器组成的M维平面传声器阵列测量技术,111个传声器在平面阵列中的位置应用随机优化的方法确定,从而保证平面传声器阵列在感兴趣的测量频率范围内具有理想的性能,并应用数值模拟的方法检验了平面传声器阵列的频谱特性.应用此平面传声器阵列对当前流行的民用客机进场着陆过程中飞机噪声源进行了测量分析,实验结果表明应用此项技术可以辨别出在飞机表面上所有重要的噪声源,并可获得全尺寸飞机机体重要噪声源的详细的频谱特性、指向特性和声级变化.
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| 收稿时间： | 1999-11-04 |
A study on landing aircraft noise based on the fly-over measurements with a planar microphone array |
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| QIAO Weiyang, Ulf Michel. A study on landing aircraft noise based on the fly-over measurements with a planar microphone array[J]. ACTA ACUSTICA, 2001, 26(2): 161-168. DOI: 10.15949/j.cnki.0371-0025.2001.02.013 |
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| Authors: | QIAO Weiyang Ulf Michel |
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| Abstract: | A large planar microphone array, which consists of 111 microphones, was successfully developed. The positions of 111 microphones in the array were determined by a random optimization procedure for the largest possible amplification and dynamic range. The beam pattern of planar array was obtained by numerical calculation. This planar array was applied to measure a two-dimensional mapping of the sound sources on landing aircraft. It is shown that important airframe noise sources can be identitied. The spectra and directivity of any interested noise source can also be obtained by this measurement. |
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