Relative location estimation in wireless sensor networks
IEEE Transactions on Signal Processing
Performance analysis of relative location estimation for multihop wireless sensor networks
IEEE Journal on Selected Areas in Communications
Mobile element assisted cooperative localization for wireless sensor networks with obstacles
IEEE Transactions on Wireless Communications
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This paper studies the impact of crystal clock drift on the ranging accuracy. A novel technique in which a group of sensor devices, each having a different clock drift, can reduce this adverse effect by a 2-phase round robin fashion is presented. In comparison to the conventional way of point-to-point group ranging scheme, this technique has the desirable advantage of low energy consumption, which is a very important requirement in wireless sensor networks. The ability to reduce the effect of timing drift is illustrated in the simulation results where our proposed method outperforms prior works under the effect of clock drift on the ranging accuracy.