Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23016
Title: A lower bound of DOA-estimates by an array randomly subject to sensor-breakdown
Authors: Wong, KT 
Wu, YI
Hsu, YS
Song, Y
Keywords: Array signal processing
direction of arrival estimation
phased arrays
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE sensors journal, 2012, v. 12, no. 5, 5995136, p. 911-913 How to cite?
Journal: IEEE sensors journal 
Abstract: This paper introduces a new metric, to approximately lower-bound the error-variance in the estimation of an incident source's direction-of-arrival (DOA), for a sensor-array subject to random breakdown in its individual sensors. This new metric equals a weighted sum of Cramér-Rao bounds, each conditioned on a distinct event of sensors-breakdown. Those distinct events together describe the overall random phenomenon of the fallibility of the sensors that constitute the sensor-array. This new metric's tightness as an approximate lower bound is illustrated by Monte Carlo simulations of the maximum-likelihood estimator.
URI: http://hdl.handle.net/10397/23016
ISSN: 1530-437X
DOI: 10.1109/JSEN.2011.2165704
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