Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Long-Term Forecast of Station View Periods for Elliptical Orbits   In a previous paper, using ergodic theory, Lo [1] derived a simple definite
integral that provided an estimate of the view periods of ground stations to
satellites. This assumes the satellites are in circular orbits with
non-repeating ground tracks under linear $J_2$ perturbations. The novel feature
is that this is done without the propagation of the trajectory by employing
ergodic theory. This accelerated the telecommunications mission design and
analysis by several orders of magnitude and greatly simplified the process. In
this paper, we extend the view period integral to elliptical orbits.

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The categories of this paper are: econ
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-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: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph