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This paper presents a novel concept and algorithms for the precise positioning of geostationary data relays using Low Earth Orbit (LEO) satellites. Simulations show positioning accuracies at centimetre level. A time synchronization between the LEO satellite and the ground station is decisive for achieving such high accuracies. The estimated positions enable orbit predictions for geostationary data...
The use of Low Earth Orbit (LEO) satellites as navigation satellites for geostationary data relays promises positioning with centimetre accuracy. Thereby, the number of visible LEO satellites, the geometry of the LEO constellation, the antenna gains and the signal design have a huge influence on the achievable precision. In addition, LEO satellite position biases propagate into geostationary (GEO)...
Earth observation uses a large number of Low Earth Orbiting (LEO) satellites (ca. 400). The increasing resolution of their instruments has inflated the data volumes that need to be transmitted. The low altitudes limit the contact times, which is challenging both with respect to the data volumes and delay until data can be transmitted. Geostationary satellite (GEO) relaying is thus a promising alternative...
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