Axel Nothnagel

发表

Influence of Source Constellations on UT1 Derived from IVS INT1 Sessions

Minttu Uunila, Axel Nothnagel, Judith Leek, 2012 .

Adjustment of a European Combined GPS-SLR-VLBI Fundamental Network

Axel Nothnagel, K Kaniuth, Horst Müller, 1998 .

International VLBI Service for Geodesy and Astrometry

Axel Nothnagel, Dirk Behrend, Zinovy Malkin, 2017, Journal of Geodesy.

Fringe fitting and group delay determination for geodetic VLBI observations of DOR tones

Qiang Zhang, Axel Nothnagel, Songtao Han, 2019, Advances in Space Research.

Integration of Space Geodetic Techniques as the Basis for a Global Geodetic-Geophysical Observing System (GGOS-D): An Overview

Axel Nothnagel, Markus Rothacher, Hermann Drewes, 2010 .

Strategic Plan of the IVS for the Period 2016-2025

Axel Nothnagel, Torben Schüler, Rüdiger Haas, 2016 .

Constraining Least-Squares VLBI Solutions

Axel Nothnagel, Thomas Artz, Sebastian Halsig, 2016 .

Space-Time Reference Systems for Monitoring Global Change and for Precise Navigation

Harald Schuh, Axel Nothnagel, K Börger, 2010 .

The Bonn Correlator: Status Report

Axel Nothnagel, Torben Schüler, Walter Alef, 2019 .

Terrestrial Laser Scanner Two-Face Measurements for Analyzing the Elevation-Dependent Deformation of the Onsala Space Observatory 20-m Radio Telescope’s Main Reflector in a Bundle Adjustment

Axel Nothnagel, Heiner Kuhlmann, Rüdiger Haas, 2017, Sensors.

Modeling the VLBI delay for Earth satellites

Axel Nothnagel, F. Jaron, 2018, Journal of Geodesy.

The EUropean-VGOS Project

Axel Nothnagel, Torben Schüler, Christian Plötz, 2019 .

Comparison and Combination of Recent European VLBI and GPS solutions

Axel Nothnagel, Matthias Becker, J.c. Campbell, 2000 .

Investigations of reference systems for monitoring global change and for precise navigation in space: preface to the special issue on reference systems

Axel Nothnagel, Detlef Angermann, Robert Heinkelmann, 2018, Journal of Geodesy.

Layout of local tie report

Axel Nothnagel, 2005 .

Consistent realization of ITRS and ICRS from a multi-technique combination

Axel Nothnagel, Manuela Seitz, 2014 .

VLBI intensive sessions revisited

Axel Nothnagel, Judith Leek, Maike Schumacher, 2012 .

Numerical Issues in Space-Geodetic Data Analysis and Their Impact on Earth Orientation Parameters

Axel Nothnagel, Sebastian Halsig, Andreas Iddink, 2016 .

An Inequality Constrained Least-Squares Approach as an Alternative Estimation Procedure for Atmospheric Parameters from VLBI Observations

Axel Nothnagel, Thomas Artz, Sebastian Halsig, 2016 .

The Use of NWP Products in Near Real-Time GPS Data Processing

Axel Nothnagel, Antonio Rius, Estel Cardellach, 2001 .

The correlation process in Very Long Baseline Interferometry

Axel Nothnagel, A. Nothnagel, 2019, GEM - International Journal on Geomathematics.

IVS and its important role in the maintenance of the global reference systems

Axel Nothnagel, Ed Himwich, W. Schlüter, 2002 .

Improved Positions of Non-Geodetic EVN Telescopes

Richard Campbell, Axel Nothnagel, Simon T. Garrington, 2002 .

The IVS official combined solution for ITRF2008

Axel Nothnagel, S. Böckmann, A. Nothnagel, 2009 .

Reliability and Stability of VLBI-Derived Sub-Daily EOP Models

Peter Steigenberger, Axel Nothnagel, T Artz, 2010 .

Initial Results Obtained with the First TWIN VLBI Radio Telescope at the Geodetic Observatory Wettzell

Axel Nothnagel, Torben Schüler, Sebastian Halsig, 2015, Sensors.

IVS High Accurate Products for the Maintenance of the Global Reference Frames As Contribution to GGOS

Axel Nothnagel, Alan R. Whitney, Dirk Behrend, 2007 .

On the geometry of baselines suitable for UT1 estimation with VLBI Intensive sessions

Axel Nothnagel, Benedikt Soja, Johannes Böhm, 2021 .

Considerations of VLBI transmitters on Galileo satellites

Axel Nothnagel, Ahmad M. Jaradat, Jakob Gruber, 2021, Advances in Space Research.

Recent crustal movements observed with the European VLBI network: geodetic analysis and results

Axel Nothnagel, Rüdiger Haas, James Campbell, 2003 .

Proof-of-Concept Studies for a Local Tie Monitoring System

Axel Nothnagel, Dirk Behrend, John M. Gipson, 2010 .

EOP alignment campaign, IDS/IGS/ILRS/IVS EOP combinations, systematic errors

Axel Nothnagel, Pascal Willis, R. Noomen, 2003 .

Conventions on thermal expansion modelling of radio telescopes for geodetic and astrometric VLBI

Axel Nothnagel, A. Nothnagel, 2009 .

The contribution of Very Long Baseline Interferometry to ITRF2005

Axel Nothnagel, Sarah Böckmann, Markus Vennebusch, 2007 .

Explanatory Supplement to the Section "Antenna Deformation

Harald Schuh, Axel Nothnagel, Oleg Titov, 1999 .

ERP time series with daily and sub-daily resolution determined from CONT05

T Artz, Axel Nothnagel, Volker Tesmer, 2007 .

International VLBI Service for Geodesy and Astrometry: Earth orientation parameter combination methodology and quality of the combined products

T Artz, Axel Nothnagel, Volker Tesmer, 2010 .

The terrestrial reference frame and the dynamic Earth

Axel Nothnagel, Zuheir Altamimi, Detlef Angermann, 2001 .

Improved UT1 predictions through low-latency VLBI observations

Axel Nothnagel, Brian J. Luzum, 2010 .

Using an atmospheric turbulence model for the stochastic model of geodetic VLBI data analysis

Axel Nothnagel, Thomas Artz, Sebastian Halsig, 2016, Earth, Planets and Space.