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- W4379875429 abstract "Acoustic imaging techniques aim at retrieving equivalent sources on radiating devices from microphone signals. Widely used in wind tunnel, they allow to localize acoustic hot spots, estimate their acoustic power and directivity. Recent years have also seen several applications of array processing techniques on CAA (computational aeroacoustics) data, where the acoustic propagation is simulated on a set of virtual microphones. Avoiding installation effects and measurement noise, this process allows to multiply and test digital mock-ups before final experimental validation. By taking advantage of state-of-the-art phased-array techniques, this paper aims at defining a consistent strategy to perform three-dimensional numerical acoustic imaging. It therefore pays a specific attention to the modelisation of aeroacoustic sources, diffraction effects brought by three-dimensional transfer functions and the reconstruction of source correlation with inverse techniques. The strategy performances (source localization, quantification, directivity) are assessed against the LAGOON landing gear benchmark." @default.
- W4379875429 created "2023-06-09" @default.
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- W4379875429 date "2023-06-08" @default.
- W4379875429 modified "2023-09-27" @default.
- W4379875429 title "Enhancement of array processing techniques for CAA-based acoustic imaging" @default.
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- W4379875429 doi "https://doi.org/10.2514/6.2023-3819" @default.
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