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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.
Published in:
Sensors Journal, IEEE
(Volume:12
,
Issue:
5
)
Date of Publication: May 2012
- Page(s):
- 911 - 913
- ISSN :
- 1530-437X
- INSPEC Accession Number:
- 12650274
- Digital Object Identifier :
- 10.1109/JSEN.2011.2165704
- Product Type:
- Journals & Magazines
- Date of Publication :
- 22 August 2011
- Date of Current Version :
- 05 April 2012
- Issue Date :
- May 2012
- Sponsored by :
- IEEE Sensors Council
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