
Proceedings Paper
Tracking moving acoustic sources with a network of sensorsFormat | Member Price | Non-Member Price |
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Paper Abstract
This paper presents issues and algorithms for the problem of source
tracking with a network of aeroacoustic sensors. We study fusion of
data from sensors that are widely separated, and we give particular
attention to the important issues of limited communication bandwidth
between sensor nodes, effects of source motion, coherence loss between
signals measured at different sensors, signal bandwidth, and noise.
We compare the tracking performance of various schemes, including
joint (coherent) processing of all sensor data, as well as
data-reduction schemes that employ distributed computation and reduced
communication bandwidth with a fusion center. The key result of our
analysis is a quantification of the potential gain in source tracking
accuracy that is achievable with greater communication bandwidth and
joint processing of sensor data. We show that the potential gain in
accuracy depends critically on the scenario, as determined by the
source motion parameters, signal coherence between sensors, bandwidth
of the source signals, and noise level. For scenarios that admit
increased accuracy with joint processing, we present a
bandwidth-efficient algorithm that involves beamforming at
small-aperture sensor arrays combined with time-delay estimation
between widely-spaced sensor arrays.
Paper Details
Date Published: 7 August 2002
PDF: 12 pages
Proc. SPIE 4743, Unattended Ground Sensor Technologies and Applications IV, (7 August 2002); doi: 10.1117/12.444512
Published in SPIE Proceedings Vol. 4743:
Unattended Ground Sensor Technologies and Applications IV
Edward M. Carapezza, Editor(s)
PDF: 12 pages
Proc. SPIE 4743, Unattended Ground Sensor Technologies and Applications IV, (7 August 2002); doi: 10.1117/12.444512
Show Author Affiliations
Richard J. Kozick, Bucknell Univ. (United States)
Brian M. Sadler, Army Research Lab. (United States)
Published in SPIE Proceedings Vol. 4743:
Unattended Ground Sensor Technologies and Applications IV
Edward M. Carapezza, Editor(s)
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