一种混合距离测量/到达角定位方法

Sunit Kumar Ghosh, M. Ryan, M. Frater
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引用次数: 1

摘要

由于许多无线传感器网络应用需要准确了解网络中传感器的位置,因此定位受到了相当大的关注。两种主要的定位技术是距离测量和到达角测量。前者需要大量的计算来解决计算角度中的符号歧义,而后者需要仔细校准以提供高精度。在本文中,我们描述了一种混合技术,该技术使用低精度的到达角估计来解决距离测量中的符号模糊问题。在许多实际情况下,即使在轴承线估计的均方根误差高达30度的情况下,也可以以高概率成功解决歧义,从而避免了校准的需要。这种符号歧义的早期解决方案可用于开发使用距离测量的低复杂性定位技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Hybrid Distance-measurement/Angle-of-arrival Approach to Localization
Localization has received considerable attention because many wireless sensor network applications require accurate knowledge of the locations of the sensors in the network. The two main localization techniques are distance measurement and angle-of-arrival measurement. The former requires extensive calculations to resolve sign ambiguities in calculated angles, while the latter requires careful calibration to provide high accuracy. In this paper, we describe a hybrid technique, in which low-accuracy estimates of the angle-of-arrival are used to resolve the sign ambiguity in distance measurements. In many practical situations, the ambiguity can be resolved with a high probability of success even with an RMS error as high as 30 degrees in the line-of-bearing estimate, which avoids the need for calibration. Early resolution of this sign ambiguity can be used to develop lower-complexity localization techniques using distance measurement.
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