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Improved TOA-Based Localization Method with BS Selection Scheme for Wireless Sensor Networks

机译：改进的基于TOA的无线传感器网络基站选择定位方法

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摘要

The purpose of a localization system is to estimate the coordinates of the geographic location of a mobile device. The accuracy of wireless localization is influenced by non-line-of-sight (NLOS) errors in wireless sensor networks. In this paper, we present an improved time of arrival (TOA)-based localization method for wireless sensor networks. TOA-based localization estimates the geographic location of a mobile device using the distances between a mobile station (MS) and three or more base stations (BSs). However, each of the NLOS errors along a distance measured from an MS (device) to a BS (device) is different because of dissimilar obstacles in the direct signal path between the two devices. To accurately estimate the geographic location of a mobile device in TOA-based localization, we propose an optimized localization method with a BS selection scheme that selects three measured distances that contain a relatively small number of NLOS errors, in this paper. Performance evaluations are presented, and the experimental results are validated,through comparisons of various localization methods with the proposed method.
机译：定位系统的目的是估计移动设备地理位置的坐标。无线定位的准确性受无线传感器网络中非视距（NLOS）错误的影响。在本文中，我们提出了一种改进的基于到达时间（TOA）的无线传感器网络定位方法。基于TOA的定位使用移动站（MS）与三个或更多基站（BS）之间的距离估算移动设备的地理位置。但是，由于在两个设备之间的直接信号路径中存在不同的障碍，因此沿着从MS（设备）到BS（设备）测量的距离的每个NLOS误差都不同。为了在基于TOA的定位中准确估算移动设备的地理位置，我们提出了一种优化的定位方法，该方法采用BS选择方案，该方案选择三个测量距离，这些距离包含相对较少的NLOS误差。通过将各种定位方法与提出的方法进行比较，提出了性能评估并验证了实验结果。

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