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- W2148053032 abstract "Acoustic arrays have become an important tool in noise identification for aerospace measurement applications, and the conventional beamforming algorithm has been adopted as a processing technique of choice. In most practical cases the beamforming computations have to be conducted off-line due to extensive computational time requirements. An alternative algorithm with real-time capability has been proposed. The algorithm has a form similar to a classical observer whilst working in the frequency domain for the array processing. The performance of this observer-based algorithm is studied here in a simulation case and in an experimental case by comparing it to a conventional beamforming method. In this paper it is shown that the observer-based algorithm could release the coherence restriction between the background noise and the signal of interest. The proposed observer-based algorithm also has the capability of operating over sampling blocks recursively. The convergence rate of this recursive algorithm is also satisfactory for the simulation case. As a result, a great deal of experimental time could be saved as any testing defects could be revealed instantaneously and corrected on-site. In addition, this innovative approach provides an alternative perspective from which many techniques already in use could be extended to this new application area of array processing." @default.
- W2148053032 created "2016-06-24" @default.
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- W2148053032 date "2011-04-26" @default.
- W2148053032 modified "2023-09-27" @default.
- W2148053032 title "Real-time location of coherent sound sources by the observer-based array algorithm" @default.
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- W2148053032 doi "https://doi.org/10.1088/0957-0233/22/6/065501" @default.
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