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Inverse Method of Microphone Array and Aircraft Noise Source Identification
MA Jun-hui;QIAO Wei-yang;TAN Hong-chuan;ZHAO Lei
2011, 31 (2):
163-169.
DOI: 10.3969/j.issn.1006-1355-2011.02.039
In order to develop and improve the technique of identification and measurement of aircraft noise source, and to understand the essential properties of the noise source deeply, a large planar microphone array for the landing process of large civil aircraft has been developed. This plane array is composed by 104 microphones whose positions in the plane are determined by the computer aided optimization design. Meanwhile, the spectrum characteristics of the array have been tested by means of numerical simulation. The plane array has been used to measure the noise sources of 20 landing aircrafts in the Xi’an Xianyang International Airport. In the experiment, a noise source identification and measurement system for large civil aircraft has been built and developed, and the microphone array technique and its data processing software also have been verified.
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