Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Autocorrelation, Wigner and Ambiguity Transforms on Polygons for
  Coherent Radiation Rendering   Simulating the radar illumination of large scenes generally relies on a
geometric model of light transport which largely ignores prominent wave
effects. This can be remedied through coherence ray-tracing, but this requires
the Wigner transform of the aperture. This diffraction function has been
historically difficult to generate, and is relevant in the fields of optics,
holography, synchrotron-radiation, quantum systems and radar. In this paper we
provide the Wigner transform of arbitrary polygons through geometric transforms
and the Stokes Fourier transform; and display its use in Monte-Carlo rendering.

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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: ao-sci
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The categories of this paper are: math
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th