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Earth orientation parameters estimated from VLBI during the CONT11 campaign
In this paper we investigate the accuracy of the earth orientation parameters (EOP) estimated from the continuous VLBI campaign CONT11. We first estimated EOP with daily resolution and compared these
An efficient code to solve the Kepler equation. Elliptic case
A new approach for solving Kepler equation for elliptical orbits is developed in this paper. This new approach takes advantage of the very good behaviour of the modified Newton?Raphson method when
orvara: An Efficient Code to Fit Orbits Using Radial Velocity, Absolute, and/or Relative Astrometry
We present an open-source Python package, Orbits from Radial Velocity, Absolute, and/or Relative Astrometry (orvara), to fit Keplerian orbits to any combination of radial velocity, relative
An efficient code to solve the Kepler equation
Context. This paper introduces a new approach for solving the Kepler equation for hyperbolic orbits. We provide here the Hyperbolic Kepler Equation–Space Dynamics Group (HKE–SDG), a code to solve the
ERP Estimation using a Kalman Filter in VLBI
Antenna Axis Offsets and Their Impact on VLBI Derived Reference Frames
We have estimated the antenna axis offsets of VLBI (Very Long Baseline Interferometry) telescopes using VLBI data from 1995 to 2013. These were compared to values estimated in terrestrial surveys. We
Tropospheric Modeling for the Intensive Sessions
New Progress in VLBI tracking of GNSS satellites at GFZ
Preliminary results of post-correlation with the observations from a recent VLBI tracking of a GLONASS satellite experiment performed by the radio telescopes in Wettzell and Onsala in January 2013 are presented.
The effect of meteorological data on atmospheric pressure loading corrections in VLBI data analysis
Earth’s crustal deformation is a manifestation of numerous geophysical processes, which entail the atmosphere and ocean general circulation and tidal attraction, climate change, and the hydrological