In wireless sensor networks(WSNs),sensor location plays a critical role in many applications.Having a GPS receiver On every sensor node is costly.This paper describes MACL,a mobile anchor centroid localization method,which uses a single mobile anchor node to move in the sensing field and broadcast its current position periodically.The proposed method is radio-frequency based,so no extra hardware or data communication is needed between the sensor nodes.We use simulations to investigate the performance of MACL,and find that the localization method is principle simple,less computing and communication overhead,low costly,and flexible accuracy.
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