Spatio-temporal monitoring using contours in large-scale wireless sensor networks

Authors:
Hadi Alasti;Asis Nasipuri
Affiliations:
University of North Carolina at Charlotte, Charlotte, NC, USA;University of North Carolina at Charlotte, Charlotte, NC, USA
Venue:
Proceedings of the 2nd ACM international workshop on Foundations of wireless ad hoc and sensor networking and computing
Year:
2009

Citing 3
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Abstract

This paper presents algorithms for efficiently detecting the variation of a distributed signal over space and time using large scale wireless sensor networks. The proposed algorithms use contours for estimating the spatial distribution of a signal. A contour tracking algorithm is proposed to efficiently monitor the variations of the contours with time. Use of contours reduces the communication cost by reducing the participation of sensor nodes for the monitoring tasks. The proposed schemes use multi-sensor collaboration techniques and non-uniform contour levels to reduce the error in reconstructing the signal distribution. Results from computer simulations are presented to demonstrate the performance of the proposed schemes.