Mobility-Assisted Node Localization Based on TOA Measurements Without Time Synchronization in Wireless Sensor Networks
Mobility-Assisted Node Localization Based on TOA Measurements Without Time Synchronization in Wireless Sensor Networks
复制标题
无线传感器网络中基于无时间同步的 TOA 测量的移动辅助节点定位
DOI：
10.1007/s11036-010-0281-3
复制
发表时间：
2012-02-01
影响因子：
3.8
通讯作者：
Gu, Yu
中科院分区：
文献类型：
--
作者：
Chen, Hongyang;Liu, Bin;Gu, Yu
无线传感器网络（WSNs）已经被提出用于许多位置相关的应用。为了标记收集到的数据和方便通信协议，有必要确定每个传感器的位置。本文讨论了两种新型定位方案的性能，这两种定位方案使用两种广义几何定位算法来实现基于到达时间（TOA）测量的精确估计，而不需要时间同步。为了提高网络性能和解决静态wsn在位置估计方面的局限性，有效地利用了移动锚点，并设计了两种具有吸引力的移动锚点移动策略。通过大量的仿真，验证了该方法的有效性，并与传统的三边测量方法进行了比较。
Wireless sensor networks (WSNs) have been proposed for a multitude of location-dependent applications. To stamp the collected data and facilitate communication protocols, it is necessary to identify the location of each sensor. In this paper, we discuss the performance of two novel positioning schemes, which use two generalized geometrical localization algorithms to achieve an accurate estimation based on time-of-arrival (TOA) measurements without time synchronization. In order to improve the network performance and address the limitations of static WSNs on position estimation, a mobile anchor is utilized effectively and two attractive movement strategies for mobile anchor are designed accordingly. The effectiveness of our approaches is validated and compared with the traditional Trilateration method by extensive simulations.