Title :
DOA estimation using one-bit quantized measurements
Author :
Bar-Shalom, Ofer ; Weiss, Anthony J.
Author_Institution :
Tel Aviv Univ., Israel
fDate :
7/1/2002 12:00:00 AM
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;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2002.1039405
