Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The application of MultiView Methods for High Precision Astrometric
  Space VLBI at Low Frequencies   High precision astrometric Space Very Long Baseline Interferometry (S-VLBI)
at the low end of the conventional frequency range, i.e. 20cm, is a requirement
for a number of high priority science goals. These are headlined by obtaining
trigonometric parallax distances to pulsars in Pulsar--Black Hole pairs and OH
masers anywhere in the Milky Way Galaxy and the Magellanic Clouds. We propose a
solution for the most difficult technical problems in S-VLBI by the MultiView
approach where multiple sources, separated by several degrees on the sky, are
observed simultaneously. We simulated a number of challenging S-VLBI
configurations, with orbit errors up to 8m in size and with ionospheric
atmospheres consistant with poor conditions. In these simulations we performed
MultiView analysis to achieve the required science goals. This approach removes
the need for beam switching requiring a Control Moment Gyro, and the space and
ground infrastructure required for high quality orbit reconstruction of a
space-based radio telescope. This will dramatically reduce the complexity of
S-VLBI missions which implement the phase-referencing technique.

7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
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The categories of this paper are: adap-org
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an