Title :
Closed-Form Direction Finding Using Collocated but Orthogonally Oriented Higher Order Acoustic Sensors
Author :
Song, Yang ; Wong, Kainam Thomas
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
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.
Keywords :
acoustic transducers; acoustic wave velocity measurement; direction-of-arrival estimation; acoustic particle-velocity sensor; closed-form direction finding; collocated orthogonally oriented higher order directional acoustic sensor; incident source azimuth-elevation angle-of- arrival estimation; open literature eigenstructure-based direction-finding algorithm; Acoustic measurements; Acoustic sensors; Acoustics; Arrays; Sea measurements; Vectors; Acoustic interferometry; acoustic signal processing; acoustic velocity measurement; array signal processing; direction of arrival estimation; phased arrays; sonar arrays; underwater acoustic arrays;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2012.2197608
