Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Indoor Navigation Algorithm Based on a Smartphone Inertial Measurement
  Unit and Map Matching   We propose an indoor navigation algorithm based on pedestrian dead reckoning
(PDR) using an inertial measurement unit in a smartphone and map matching. The
proposed indoor navigation system is user-friendly and convenient because it
requires no additional device except a smartphone and works with a pedestrian
in a casual posture who is walking with a smartphone in their hand. Because the
performance of the PDR decreases over time, we greatly reduced the position
error of the trajectory estimated by PDR using a map matching method with a
known indoor map. To verify the proposed indoor navigation algorithm, we
conducted an experiment in a real indoor environment using a commercial Android
smartphone. The performance of our algorithm was demonstrated through the
results of the experiment.

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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: physics
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int