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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ahmed, A.A. Shi, H. Shang, Y. |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Comput. Sci., Missouri Univ., Columbia, MO, USA (Ahmed, A.A.; Shi, H.; Shang, Y.) |
| Abstract | For wireless sensor networks, localization is crucial due to the dynamic nature of deployment. In relative localization, nodes use the distance measurements to estimate their positions relative to some coordinate system. In absolute localization, a few nodes (called anchors) need to know their absolute positions, and all the other nodes are absolutely localized in the coordinate system of the anchors. Relative and absolute localization methods differ in both the performance and the cost. We present a new approach to relative localization that we refer to as: simple hybrid absolute-relative positioning (SHARP). In SHARP, a relative localization method (M1) is used to relatively localize N/sub r/ reference nodes. Then, an absolute localization method (M2) uses these N/sub r/ nodes as anchors to localize the rest of the nodes. Choosing N/sub r/, M1, and M2 gives a wide range of performance-cost tuning. We have done extensive simulation using the multidimensional scaling (MDS) method as M1 and the ad-hoc positioning system (APS) method as M2. While previous research shows that MDS gives better localization results than APS, our simulation shows that SHARP outperforms MDS if both the localization error and the cost are considered. |
| Sponsorship | IEEE Comput. Soc. Tech. Comm. on Distributed Process. (TCDP) |
| Starting Page | 892 |
| Ending Page | 898 |
| File Size | 321818 |
| Page Count | 7 |
| File Format | |
| ISBN | 0769523285 |
| DOI | 10.1109/ICDCSW.2005.125 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-06-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Intelligent networks Wireless sensor networks Costs Sensor phenomena and characterization Distance measurement Multidimensional systems Computer science Instruments Micromechanical devices Microelectromechanical systems |
| Content Type | Text |
| Resource Type | Article |
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