Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accurate indoor mapping using an autonomous unmanned aerial vehicle
  (UAV)   An autonomous indoor aerial vehicle requires reliable simul- taneous
localization and mapping (SLAM), accurate flight control, and robust path
planning for navigation. This paper presents a system level combination of
these existing technologies for 2D navigation. An Unmanned aerial vehicle (UAV)
called URSA (Unmanned Recon and Safety Aircraft) that can autonomously flight
and mapping indoors environments with an accuracy of 2 cm was developed.
Performance in indoor environments was assessed in terms of mapping and
navigation precision.

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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con