无基础设施地磁室内定位系统的实际效果

Marinus Toman, Eoghan Furey, K. Curran
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引用次数: 0

摘要

无基础设施室内定位系统(IPS)是室内定位领域的一个相对较新的进展。传统上,IPS需要建筑物内一定数量的专用基础设施来准确定位设备。现在有公司提供无基础设施的IPS,声称他们可以获得亚米级的精度。一些IPS还声称使用地磁定位来达到这种精度。这里的目的是研究提供地磁定位技术的无基础设施IPS的准确性。我们解释了它的准确性,什么可能会对系统的准确性产生负面影响,以及在多大程度上使用地磁定位技术。开发了Android移动应用程序,主要目的是研究IPS在各种条件下的准确性。我们发现,一开始的IPS比GPS精确三倍,到最后是GPS精确十倍。IPS在有磁力计的设备上反应更快,也更准确,但当互联网连接中断时,精度会大幅下降。此外,潮湿的天气对准确性产生了负面影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Real-World Efficacy of an Infrastructure-Free Geomagnetic Indoor Positioning System
Infrastructure-free Indoor Positioning Systems (IPS) are a relatively new advancement in the indoor localisation area. Traditionally, IPS's require a certain amount of dedicated infrastructure within a building to position a device accurately. There are now companies offering infrastructure-free IPS that claim they can obtain sub-metre accuracy. Some IPS's also claim to use geomagnetic positioning to achieve this accuracy. The aim here is to investigate the accuracy of an infrastructure-free IPS which offers geomagnetic positioning techniques. We explain its accuracy, what may negatively affect the accuracy of the system and to what extent are geomagnetic positioning techniques being used. An Android mobile application was developed with the primary purpose of investigating the accuracy of the IPS under various conditions. We found that the IPS at the beginning was three times more accurate than GPS and ten times more accurate at the end. The IPS was more responsive and more accurate on a device that had a magnetometer but accuracy dropped considerably when the internet connection is lost. Also, wet weather specifically impacted negatively on the accuracy.
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