A sequential chain directional transmission-based localization algorithm

Abstract

The accuracy of localization is a significant criterion to evaluate the practical utility of localization algorithm in wireless sensor networks. By analyzing the impact of the network topology on the position accuracy of representative localization algorithms, in this paper, we proposed a novel Sequential Chain DirectionalTransmission-based Localization Algorithm (SCDTLA), which uses the topology control scheme to construct a sequential chain for every node in wireless sensor networks. This algorithm can make the data packets to be transmitted directionally by sensors while using the omni-directional antenna under flooding protocol. In such scenes where sensor nodes are uniformly distributed, the simulation results show that our localization algorithm can position much more accurately than DV hop in regular and especially irregular network topologies with lower communication overhead.

RSS-based efficient grid-scan localization algorithm in wireless sensor networks

“…Owing to high cost of Global Positioning System (GPS) receivers, only a small portion of sensor nodes are equipped with GPS receivers and these nodes are called anchor nodes. The remaining nodes, called unknown nodes, are location-unaware initially, and need to be localized with the assistance of the anchor nodes [1], [2], [3].…”