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Point In Triangle Testing Based Trilateration Localization Algorithm In Wireless Sensor Networks
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  • Point In Triangle Testing Based Trilateration Localization Algorithm In Wireless Sensor Networks
  • Point In Triangle Testing Based Trilateration Localization Algorithm In Wireless Sensor Networks
저자명
Zhang. Aiqing,Ye. Xinrong,Hu. Haifeng
간행물명
KSII Transactions on internet and information systems : TIIS
권/호정보
2012년|6권 10호|pp.2567-2586 (20 pages)
발행정보
한국인터넷정보학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Localization of sensor nodes is a key technology in Wireless Sensor Networks(WSNs). Trilateration is an important position determination strategy. To further improve the localization accuracy, a novel Trilateration based on Point In Triangle testing Localization (TPITL)algorithm is proposed in the paper. Unlike the traditional trilateration localization algorithm which randomly selects three neighbor anchors, the proposed TPITL algorithm selects three special neighbor anchors of the unknown node for trilateration. The three anchors construct the smallest anchor triangle which encloses the unknown node. To choose the optimized anchors, we propose Point In Triangle testing based on Distance(PITD) method, which applies the estimated distances for trilateration to reduce the PIT testing errors. Simulation results show that the PIT testing errors of PITD are much lower than Approximation PIT(APIT) method and the proposed TPITL algorithm significantly improves the localization accuracy.