Improving the orbits of GPS block IIA satellites during eclipse seasons |
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Authors: | CJ Rodriguez-Solano U HugentoblerP Steigenberger G Allende-Alba |
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Institution: | Institut für Astronomische und Physikalische Geodäsie, Technische Universität München, 80333 München, Germany |
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Abstract: | During Sun-Earth eclipse seasons, GPS-IIA satellites perform noon, shadow and post-shadow yaw maneuvers. If the yaw maneuvers are not properly taken into account in the orbit determination process, two problems appear: (1) the observations residuals increase since the modeled position of the satellite’s navigation antenna differs from the true position, and (2) the non-conservative forces like solar radiation pressure or Earth radiation pressure are mismodeled due to the wrong orientation of the satellite’s surfaces in space. |
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Keywords: | GNSS Box-wing satellite model Precise orbit determination Solar radiation pressure Yaw attitude |
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