title: A mobile anchor assisted localization algorithm based on regular hexagon in wireless sensor networks.
abstract: Localization is one of the key technologies in wireless sensor networks (WSNs), since it provides fundamental support for many location-aware protocols and applications. Constraints of cost and power consumption make it infeasible to equip each sensor node in the network with a global position system (GPS) unit, especially for large-scale WSNs. A promising method to localize unknown nodes is to use several mobile anchors which are equipped with GPS units moving among unknown nodes and periodically broadcasting their current locations to help nearby unknown nodes with localization. This paper proposes a mobile anchor assisted localization algorithm based on regular hexagon (MAALRH) in two-dimensional WSNs, which can cover the whole monitoring area with a boundary compensation method. Unknown nodes calculate their positions by using trilateration. We compare the MAALRH with HILBERT, CIRCLES, and S-CURVES algorithms in terms of localization ratio, localization accuracy, and path length. Simulations show that the MAALRH can achieve high localization ratio and localization accuracy when the communication range is not smaller than the trajectory resolution.
authors.affiliation: Department of Information & Communication Systems, Hohai University, Changzhou 213022, China ; Guangdong Provincial Key Lab of Petrochemical Equipment Fault Diagnosis, Guangdong University of Petrochemical Technology, Maoming 525000, China.
authors.forename: Guangjie
authors.identifier: 0000-0002-6921-7369
authors.initials: G
authors.lastname: Han
authors.affiliation: Department of Information & Communication Systems, Hohai University, Changzhou 213022, China.
authors.forename: Chenyu
authors.identifier: 0000-0003-2334-1038
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Integrated Management Coastal Research Institute, Universidad Politecnica de Valencia, 46000 Valencia, Spain.
authors.forename: Jaime
authors.identifier: 0000-0002-0862-0533
authors.initials: J
authors.lastname: Lloret
authors.affiliation: Guangdong Provincial Key Lab of Petrochemical Equipment Fault Diagnosis, Guangdong University of Petrochemical Technology, Maoming 525000, China.
authors.forename: Lei
authors.identifier: 0000-0002-6700-9347
authors.initials: L
authors.lastname: Shu
authors.affiliation: Instituto de Telecomunicações, University of Beira Interior, 6201-001 Covilhã, Portugal.
authors.forename: Joel J P C
authors.initials: JJ
authors.lastname: Rodrigues
mesh_terms: D000465:Algorithms; D058998:Remote Sensing Technology / Q000379:methods*