教師資料查詢 | 類別: 期刊論文 | 教師: 張志勇 Chih-yung Chang (瀏覽個人網頁)

標題:Distributed direction-based localization in wireless sensor networks
學年95
學期2
出版(發表)日期2007/03/01
作品名稱Distributed direction-based localization in wireless sensor networks
作品名稱(其他語言)
著者Wang, Sheng-Shih; Shih, Kuei-Ping; Chang, Chih-Yung
單位淡江大學資訊工程學系
出版者Amsterdam: Elsevier BV
著錄名稱、卷期、頁數Computer Communications 30(6), pp.1424–1439
摘要Location awareness is an attractive research issue in the wireless sensor network (WSN). However, precise location information may be unavailable due to the constraint in energy, computation, or terrain. Additionally, several applications can tolerate the diverse level of inaccuracy in such geographic information. Thus, this paper presents a direction-based localization scheme, DLS, whose main goal is for each sensor to determine its direction rather than its absolute position. The direction we are concerned with is the one relative to the sink. Motivated by the proposed spatial locality property, DLS considers multiple messages received for a sensor to determine its direction. Furthermore, a novel scheme, anchor deployment strategy, is also proposed for the improvement of the estimated correctness in direction of the sensor within the communication range of the sink. With the aid of the virtual dual direction coordinate (VDDC) system, DLS is able to efficiently and precisely position sensors around the axes. We evaluate DLS via simulations in terms of various numbers of sensors and communication ranges for the scenarios with different numbers of directions. The average correct rates in DLS reach approximately 94%, 86%, and 81% for the networks with 4, 8, and 16 directions, respectively. DLS achieves outstanding performance for the high density networks as well. In addition, DLS also works well regardless of the sink placement. Overall, simulation results validate the practicality of DLS, and show that DLS can effectively achieve direction estimation.
關鍵字Wireless sensor networks (WSNs); Localization; Range-free; Direction-based localization scheme (DLS)
語言英文
ISSN0140-3664
期刊性質國外
收錄於SCI
產學合作
通訊作者Wang, Sheng-Shih
審稿制度
國別荷蘭
公開徵稿
出版型式
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