Vector-sensor array processing for electromagnetic source localization

Author

Nehorai, Arye ; Paldi, Eytan

Author_Institution

Dept. of Electr. Eng., Yale Univ., New Haven, CT, USA

Volume

42

Issue

2

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

376

Lastpage

398

Abstract

The authors present a new approach for localizing electromagnetic sources using sensors where the output of each is a vector consisting of the complete six electric and magnetic field components. Two types of source transmissions are considered: (1) single signal transmission (SST), and (2) dual signal transmission (DST). The model is given in terms of several parameters, including the wave direction of arrival (DOA) and state of polarization. A compact expression is derived for the Cramer-Rao bound (CRB) on the estimation errors of these parameters for the multi-source multi-vector-sensor model. Quality measures including mean-square angular error (MSAE) and covariance of vector angular error (CVAE) are introduced, and their lower bounds are derived. The advantage of using vector sensors is highlighted by explicit evaluation of the MSAE and CVAE bounds for source localization with a single vector sensor. A simple algorithm for estimating the source DOA with this sensor is presented along with its statistical performance analysis

Keywords

approximation theory; array signal processing; electromagnetic wave polarisation; matrix algebra; statistical analysis; Cramer-Rao bound; DOA; algorithm; direction of arrival; dual signal transmission; electric field components; electromagnetic source localization; estimation errors; lower bounds; magnetic field components; mean-square angular error; multisource multivector sensor model; polarization state; single signal transmission; source transmissions; statistical performance analysis; vector angular error covariance; vector-sensor array processing; Acoustic sensors; Array signal processing; Direction of arrival estimation; Electromagnetic fields; Electromagnetic measurements; Estimation error; Magnetic field measurement; Magnetic sensors; Polarization; Sensor arrays;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.275610

Filename

275610