What is it about?
The paper shows the mathematical details of how to measure the angle of arrival of a plane wave using a general shaped 3-dimensional array, as well as simplifications when using a tetrahedral array (or equilateral triangle array in 2 dimensions). The paper shows how this is possible only for cases where the sound from the direction of interest has high signal-to-noise ratio.
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Why is it important?
There are many applications where a large array of sensor traditionally used for beam forming direction finding is not practical. Good examples of this are robotics sensors and mobile surround sound audio microphones.
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Read the Original
This page is a summary of: Small-aperture array processing for passive multi-target angle of arrival estimation, The Journal of the Acoustical Society of America, October 2017, Acoustical Society of America (ASA),
DOI: 10.1121/1.5006910.
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