Abstract:Kinematic velocities are needed when gravity field recovery ought to be done from kinematic positions by the use of the energy integral.[4] has tested smoothing cubic splines applying on CHAMP kinematic orbit. The solution has been found potent when a reference gravity field is used during the processing. However the possibility of an error emerges that the reference field 'leaks' into the estimated velocity, which would harmfully affect the gravity field model solution in the subsequent step. The use of smoot… Show more
Kinematic orbits provide a time series of independent positions, which are a good base for gravity field recovery. Gravity field recovery using the energy integral requires numerical differentiation in order to get velocity information for kinetic energy. This paper deals with numerical differentiation methods to test the most effective method for velocity determination of a LEO (Low Earth Orbiter).
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