DOA estimation using one-bit quantized measurements

Author

Bar-Shalom, Ofer ; Weiss, Anthony J.

Author_Institution

Tel Aviv Univ., Israel

Volume

38

Issue

3

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

868

Lastpage

884

Abstract

The effects 1-bit quantization of the input samples has on the direction-of-arrival (DOA) estimation accuracy are considered. The signal model assumes a single stochastic Gaussian point source that is embedded in white Gaussian noise (WGN). The inherent limitations governed by the extreme clipping of the input data are analyzed using the Cramer-Rao bound (CRB) that is derived for a two-sensor array. In addition, several estimators for the I-bit estimation are discussed. Numerical and analytical analyses of the estimation error reveal weak dependency on signal-to-noise ratio (SNR) with singular behavior of the estimation error in certain DOA angles.

Keywords

Gaussian noise; direction-of-arrival estimation; radar signal processing; white noise; 1 bit; Cramer-Rao bound; DOA angles; DOA estimation; estimation error; input data; one-bit quantized measurements; signal model; signal-to-noise ratio; single stochastic Gaussian point source; two-sensor array; white Gaussian noise; Covariance matrix; Direction of arrival estimation; Estimation error; Frequency estimation; Gaussian noise; Quantization; Sampling methods; Signal analysis; Stochastic processes; Stochastic resonance;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2002.1039405

Filename

1039405