Paper Info
Title
Optimality Analysis of Sensor-Source Geometries in Heterogeneous Sensor Networks
Abstract
Source localization is an important application of wireless sensor networks (WSNs). Many types of sensors can be used for source localization, e.g., range sensors, bearing sensors and time-difference-of-arrival (TDOA) based sensors, etc. It is well known that relative sensor-source geometry can significantly affect the performance of any particular localization algorithm. Existing works in the literature mainly deal with geometry analysis for homogeneous sensors. However, in real applications, different types of sensors may be utilized for source localization. Hence, in this paper, we consider the optimal sensor placement problem in heterogeneous sensor networks (HSNs), where two types of sensors are deployed for source localization. Relative optimal sensor-source configurations with the minimum number of sensors for source localization are identified under the Doptimality criterion with potential extensions to the general case. Explicit characterizations of optimal sensor-source geometries are given for hybrid range and bearing sensors, hybrid bearing and TDOA based sensors as well as co-located hybrid range and bearing sensors, respectively. The results of this work can be applied to the sensor path planning problem for optimal source localization.
Year
DOI
Venue
2013
10.1109/TWC.2013.021213.121269
IEEE Transactions on Wireless Communications
Keywords
Field
DocType
fisher information matrix (fim),wsn,sensor path planning problem,heterogeneous sensor networks,source localization,localization algorithm,heterogeneous sensor network (hsn),optimal sensor-source configurations,optimal sensor placement problem,tdoa,bearing sensors,optimal source localization,cramer-rao bound (crb),sensor-source geometries,homogeneous sensors,path planning,time-difference-of-arrival,tdoa based sensors,wireless sensor networks,wireless sensor network (wsn),d-optimality criterion,sensor placement,time-of-arrival estimation,relative sensor-source geometry,hybrid bearing,optimality analysis,noise measurement,noise,time difference of arrival,geometry,vectors,sensors
Motion planning,Key distribution in wireless sensor networks,Homogeneous,Bearing (mechanical),Real-time computing,Source localization,Multilateration,Wireless sensor network,Mathematics
Journal
Volume
Issue
ISSN
12
4
1536-1276
Citations 
PageRank 
References 
18
0.86
13
Authors
3
Name
Order
Citations
PageRank
Wei Meng129430.14
Lihua Xie25686405.63
Wendong Xiao346728.64