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논문 기본 정보

자료유형
학술저널
저자정보
Liquan Zhao (Northeast Electric Power University) Kexin Zhang (Northeast Electric Power University)
저널정보
한국정보처리학회 JIPS(Journal of Information Processing Systems) JIPS(Journal of Information Processing Systems) 제16권 제5호
발행연도
2020.1
수록면
1,158 - 1,168 (11page)

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초록· 키워드

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The distance vector-hop wireless sensor node location method is one of typical range-free location methods. Indistance vector-hop location method, if a wireless node A can directly communicate with wireless sensor networknodes B and C at its communication range, the hop count from wireless sensor nodes A to B is considered to bethe same as that form wireless sensor nodes A to C. However, the real distance between wireless sensor nodes Aand B may be dissimilar to that between wireless sensor nodes A and C. Therefore, there may be a discrepancybetween the real distance and the estimated hop count distance, and this will affect wireless sensor node locationerror of distance vector-hop method. To overcome this problem, it proposes a wireless sensor network nodelocation method by modifying the method of distance estimation in the distance vector-hop method. Firstly, weset three different communication powers for each node. Different hop counts correspond to different communicationpowers; and so this makes the corresponding relationship between the real distance and hop count moreaccurate, and also reduces the distance error between the real and estimated distance in wireless sensor network. Secondly, distance difference between the estimated distance between wireless sensor network anchor nodes andtheir corresponding real distance is computed. The average value of distance errors that is computed in the secondstep is used to modify the estimated distance from the wireless sensor network anchor node to the unknownsensor node. The improved node location method has smaller node location error than the distance vector-hopalgorithm and other improved location methods, which is proved by simulations.

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