Noise source decomposition system and method using adaptive aperture phased array

摘要

A system and method for determining a characteristic of a noise source. A first array (102) of microphones is mounted on a platform moveable from a starting position to an ending position along a line parallel to a central axis of the noise source. A second array (211-221) of microphones includes sound sensors mounted in a spaced apart fixed position with respect to the noise source. A processing system processes first information from the first array (102) of microphones and second information from the second array (211-221) of microphones. The processing system collects and stores the first and second information at each discrete step of the first array (102), spatially filters the first information, processes and calibrates the filtered first information based on the second information, and further processes the calibrated first information to obtain a characteristic at a selected location. For flyover testing, the first array (102) is instead held in a fixed position.