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Closed-Form Direction Finding Using Collocated but Orthogonally Oriented Higher Order Acoustic Sensors

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2 Author(s)
Yang Song ; Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon, China ; Wong, K.T.

This paper introduces new closed-form formulas to estimate an incident source's azimuth-elevation angle-of-arrival, for various combinations of higher order directional acoustic sensors, that are orthogonally oriented in a collocated triad. Also identified are the validity regions for un ambiguous estimation of the azimuth-elevation arrival-angle. These new direction-finding formulas may be used in the open literature's eigen-structure-based direction-finding algorithms, originally designed for (first-order) acoustic particle-velocity sensors.

Published in:

Sensors Journal, IEEE  (Volume:12 ,  Issue: 8 )