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

Volume

12

Issue

8

fYear

2012

Firstpage

2604

Lastpage

2608

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;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2012.2197608

Filename

6193404