Bivariate direction finding using two perpendicular bi-directional ("figure-8") sensors of (possibly) unequal orders

Da Su; Kainam Thomas Wong; Yue Ivan Wu

doi:10.1121/1.5087824

Bivariate direction finding using two perpendicular bi-directional ("figure-8") sensors of (possibly) unequal orders

J Acoust Soc Am. 2019 Mar;145(3):1241. doi: 10.1121/1.5087824.

Authors

Da Su¹, Kainam Thomas Wong², Yue Ivan Wu³

Affiliations

¹ Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong, China.
² School of General Engineering, Beihang University, Beijing 100083, China.
³ College of Computer Science, Sichuan University, Chengdu, Sichuan 610065, China.

PMID: 31067924
DOI: 10.1121/1.5087824

Abstract

A "figure-8" sensor is so labeled because its spatial pattern resembles the character "8" with regard to the sensor's axis. This figure-8 pattern narrows as the sensor's order increases. Using two such figure-8 directional sensors of higher order, oriented perpendicularly to each other-this paper pioneers closed-form signal-processing algorithms to estimate an incident signal's azimuth-elevation bivariate direction-of-arrival. Monte Carlo simulations verify these proposed algorithms' efficacy and statistical closeness to the corresponding Cramér-Rao bounds.