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Sensors 2009, 9(5), 3405-3436; doi:10.3390/s90503405
Article

Determining the Best Sensing Coverage for 2-Dimensional Acoustic Target Tracking

*  and
Received: 19 March 2009; in revised form: 15 April 2009 / Accepted: 30 April 2009 / Published: 8 May 2009
(This article belongs to the Special Issue Wireless Sensor Technologies and Applications)
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Abstract: Distributed acoustic target tracking is an important application area of wireless sensor networks. In this paper we use algebraic geometry to formally model 2-dimensional acoustic target tracking and then prove its best degree of required sensing coverage. We present the necessary conditions for three sensing coverage to accurately compute the spatio-temporal information of a target object. Simulations show that 3-coverage accurately locates a target object only in 53% of cases. Using 4-coverage, we present two different methods that yield correct answers in almost all cases and have time and memory usage complexity of Θ(1). Analytic 4-coverage tracking is our first proposed method that solves a simultaneous equation system using the sensing information of four sensor nodes. Redundant answer fusion is our second proposed method that solves at least two sets of simultaneous equations of target tracking using the sensing information of two different sets of three sensor nodes, and fusing the results using a new customized formal majority voter. We prove that 4-coverage guarantees accurate 2-dimensional acoustic target tracking under ideal conditions.
Keywords: Wireless sensor networks; quality of service; target tracking; geometric algebra; sensing coverage; accuracy Wireless sensor networks; quality of service; target tracking; geometric algebra; sensing coverage; accuracy
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Pashazadeh, S.; Sharifi, M. Determining the Best Sensing Coverage for 2-Dimensional Acoustic Target Tracking. Sensors 2009, 9, 3405-3436.

AMA Style

Pashazadeh S, Sharifi M. Determining the Best Sensing Coverage for 2-Dimensional Acoustic Target Tracking. Sensors. 2009; 9(5):3405-3436.

Chicago/Turabian Style

Pashazadeh, Saeid; Sharifi, Mohsen. 2009. "Determining the Best Sensing Coverage for 2-Dimensional Acoustic Target Tracking." Sensors 9, no. 5: 3405-3436.



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