The aim of this study is to find an effective way to expand the ground tracking network of satellite laser ranging on the assumption that a new station is added to the existing network. Realistic numbers of observations for a new station are numerically simulated, based on the actual data acquisition statistics of the existing stations. The estimated errors are compared between the cases with and without a new station after the covariance matrices are created from a simulation run that contains six-satellite-combined orbit determination. While a station placed in the southern hemisphere is found to be useful in general, it is revealed that the most effective place differs according to the geodetic parameter. The X and Y components of the geocenter and the sectoral terms of the Earth's gravity field are largely improved by a station in the polar regions. A middle latitude station best contributes to the tesseral gravity terms, and, to a lesser extent, a low latitude station best performs for the Z component of the geocenter and the zonal gravity terms.
CITATION STYLE
Otsubo, T., Matsuo, K., Aoyama, Y., Yamamoto, K., Hobiger, T., Kubo-Oka, T., & Sekido, M. (2016). Effective expansion of satellite laser ranging network to improve global geodetic parameters 6. Geodesy. Earth, Planets and Space, 68(1). https://doi.org/10.1186/s40623-016-0447-8
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