Continuous Indoor Tracking via Differential RSS Fingerprinting
Continuous Indoor Tracking via Differential RSS Fingerprinting
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DOI：
10.1109/mass56207.2022.00072
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Yunzhi Li;Yidan Hu;A. Aseeri;Yukun Dong;Rui Zhang
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文献类型：
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作者：
Yunzhi Li;Yidan Hu;A. Aseeri;Yukun Dong;Rui Zhang
室内导航是用户探索大型陌生室内环境(如机场、商场和医院综合体)所必需的，这依赖于持续跟踪用户位置的能力。典型的室内导航系统建立在合适的室内定位系统(IPS)之上，需要用户定期提交位置查询以了解他们的下落，从而提供最新的导航信息。基于接收信号强度(RSS)的IPSS被认为是最经典的IPSS之一，它通过将用户的RSS测量值与预先在不同位置收集的指纹进行比较来定位用户。尽管现有的RSS-IPSS具有显著的优势，但它面临着两个关键挑战，即RSS指纹的模糊性和设备多样性，这可能会大大降低其定位精度。本文介绍了一种新型的基于RSS的室内连续跟踪系统CITS的设计和性能评估，该系统通过差分RSS指纹匹配可以有效地应对指纹模糊性和设备多样性。详细的实验研究证实了CITS相对于以前基于RSS的解决方案的显著优势。
Indoor navigation is necessary for users to explore large unfamiliar indoor environments such as airports, shopping malls, and hospital complex, which relies on the capability of continuously tracking a user's location. A typical indoor navigation system is built on top of a suitable Indoor Positioning System (IPS) and requires the user to periodically submit location queries to learn their whereabouts whereby to provide update-to-date navigation information. Received signal strength (RSS)-based IPSes are considered as one of the most classical IPSes, which locates a user by comparing the user's RSS measurement with the fingerprints collected at different locations in advance. Despite its significant advantages, existing RSS-IPSes suffer from two key challenges, the ambiguity of RSS fingerprints and device diversity, that may greatly reduce its positioning accuracy. In this paper, we introduce the design and evaluation of CITS, a novel RSS-based continuous indoor tracking system that can effectively cope with fingerprint ambiguity and device diversity via differential RSS fingerprint matching. Detailed experiment studies confirm the significant advantages of CITS over prior RSS-based solutions.