| タイトル | Application of beamform to sound propagation in the atmosphere |
| 著者（英） | Gerhold, Carl H.; Wiese, Michael R. |
| 著者所属（英） | Computer Sciences Corp.; NASA Langley Research Center |
| 発行日 | 1990-10-01 |
| 言語 | eng |
| 内容記述 | The feasibility of applying beam-former technology (i.e., the technique that uses the combined signal from an array of sensors as a spatial filter to locate sound sources) in atmospheric acoustics is examined. Special attention is given to the microphone array, data collection, and signal processing technology as well as to an array processing algorithm. It is shown that this algorithm, which incorporates the maximum-likelihood method, is operational. Also discussed is a postprocessing algorithm for eliminating the ghosting sidelobes that arise from the moving sources. |
| NASA分類 | ACOUSTICS |
| レポートNO | 91A12503
AIAA PAPER 90-3990 |
| 権利 | Copyright |
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