Device for localizing acoustic sources and measuring their...

Details Device for localizing acoustic sources and measuring their... Device for localizing acoustic sources and measuring their...

2011-03-08

2011-03-08

Pihulic, Dan (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

C367S008000

Reexamination Certificate

active

07903500

ABSTRACT:
The invention relates to a device for localizing acoustic sources and measuring their intensity comprisingan antenna having at least two sub-antennas, each sub-antenna having at least two branches disposed in a cross or star shape, each branch being equipped with a plurality of microphones, anda system for processing the signals coming from the microphones,the device being designed to establish, for a frequency higher than a given value fc, an acoustic source hologram, i.e. a distribution of acoustic pressures or intensities at different computation points on a given surface.

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Musha et al., “Adaptive Signal Processing for Reducing Nearby Generated Flow Noise,” Applied Acoustics, vol. 66, pp. 1206-1217, 2005.
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MacPhic, “Thinned Coincident Arrays for the Direct Measurement of the Principal Solution in Radio Astronomy,” IEEE Transactions on Antennas and Propagation, vol. 51, No. 4, pp. 788-793.
Piet et al., “Localization Of The Acoustic Sources Of The A340 With A Large Phased Microphone Array during Flight Tests,” American Institute of Aeronautics and Astronautics, Inc., vol. 2, pp. 1189-1199, 2002.

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