REFAG 2014

Part 1 - Theory and Concepts.- The Helmert transformation approach in network densification revisited.- A study of the role of the choice of reference system in the analysis of GNSS coordinate time series.- Validation of components of local ties.- Part 2 - Geodetic Measurement Techniques.- Combination of space-geodetic techniques on the observation level with c5++ - common nuisance parameters, data weighting and computational challenges.- The Processing of Single Differenced GNSS Data with VLBI Software.- IVS contribution to ITRF2014.- Antenna axis offsets and their impact on VLBI derived reference frames.- Scheduling VLBI observations to satellites with VieVS.- Refined Tropospheric Delay Models for CONT11.- Loading-induced deformation due to atmosphere, ocean and hydrology: Model comparisons and the impact on global SLR, VLBI and GNSS solutions.- The International Mass Loading Service.- Pre-combined GNSS-SLR Solutions: What could be the benefit for the ITRF?.- GGOS-SIM - Simulation of the Reference Frame for the Global Geodetic Observing System.- Overview of the ILRS contribution to the development of ITRF2013.- Part 3 - Regional Reference Frames.- A Spatial Analysis of Global Navigation Satellite Systems Stations within the context of the African Geodetic Reference Frame.- The development of a station coordinate prediction program to model time series from Continuous GPS stations in New Zealand.- Results from the regional AUSTRAL VLBI sessions for southern hemisphere reference frames.- Implementation of the ETRS89 in Europe: Current Status and Challenges.- Defining a Local Reference Frame using a Plate Motion Model and Deformation Model.- A Development of the Russian Geodetic Reference Network.- Weighted vs. unweighted MCs for the datum definition in regional networks.- Is Nubia plate rigid? A geodetic study of the relative motion of different cratonic areas within Africa.- Part 4 - Celestial to Terrestrial Frame Transformations.- How consistent are the current