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AINA
2005
IEEE

Nodes Localization through Data Fusion in Sensor Network

9 years 8 months ago
Nodes Localization through Data Fusion in Sensor Network
The Location of nodes in sensor network is an important problem with application in resource allocation, location sensitive browsing, and emergency communications. A key problem in sensor network location is the creation of a method that is robust to measurement quantization and measurement noise and also has a reasonable implementation cost. The RSS and TDoA are the popular distance measurement methods, but can be easy affected by noise and not independent. This paper explores a Covariance Intersection (CI) that fuses together location estimations obtained from power propagation loss measurements and propagation time to obtain higher accuracy location estimate. The performances of Kalman filter type estimators are severely affected by the ignored cross covariance. CI algorithm provides a mechanism to fuse two or more random variables with unknown correlation such that the computed covariance of the new estimate is consistent; therefore CI method is quite suitable for sensor network a...
Ren C. Luo, Ogst Chen, Liang Chao Tu
Added 24 Jun 2010
Updated 24 Jun 2010
Type Conference
Year 2005
Where AINA
Authors Ren C. Luo, Ogst Chen, Liang Chao Tu
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