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Publications

This section of the website contains a listing of some of the Navigation Support Office’s publications on GNSS activities:

2017:

Flohrer, C., E. Schönemann, T. Springer, R. Zandbergen, W. Enderle (2017): Update on VLBI data analysis at ESOC. 23rd Working Meeting of the European VLBI Group for Geodesy and Astrometry (EVGA) 2017, May 14-19, Chalmers University of Technology, Gothenburg, Schweden, Download.

Agrotis L., Schoenemann E., Enderle W., Caissy M., Ruelke A: The IGS Real Time Service, Schriftenreihe des DVW, Band 87, 2017, DownloadWeb PageDownload Book

Dilßner, F., E. Schönemann, T. Springer, C. Flohrer, W. Enderle (2017): Galileo IOV Spacecraft Metadata and Its Impact on Precise Orbit Determination. EGU 2017, April 23-28, Vienna, Austria, Download.

Reckeweg, F., E. Schönemann, T. Springer, W. Enderle (2017): Galileo FOC Satellite Group Delay Estimation based on Raw Method and published IOV Metadata. EGU 2017, April 23-28, Vienna, Austria, Download.

2016:

Reckeweg, F., E. Schönemann, T. Springer, M. Becker, W. Enderle (2016): Multi-GNSS/Multi-Signal code bias determination from raw GNSS observations. Geodätische Woche at InterGEO 2016, October 11-13, Hamburg, Germany, Download.

Flohrer, C., M. Mercolino, E. Schönemann, T. Springer, J. Feltens, R. Zandbergen, W. Enderle, T. Morley (2016): VLBI and Delta-DOR activities at ESOC. First International Workshop on VLBI Observations of Near-field Targets 2016, October 5-6, Bonn, Germany, Download paperDownload ppt.

Braun, S., S. de Fine Licht, M. Ramos, E. Schönemann, W. Enderle, K.-J. Schulz (2016): Generation of a time scale at ESOC, 30th European Frequency and Time Forum 2016, April 4-7, York, United Kingdom, Download.

Dilßner, F., T. Springer, E. Schönemann, W. Enderle (2016): Evaluating the pre-flight GPS Block IIR/IIR-M antenna phase pattern measurements. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Flohrer, C., E. Schönemann, T. Springer, R. Zandbergen, W. Enderle (2016): VLBI processing at ESOC, 9th IVS General Meeting 2016, March 13-19, Johannesburg, South Africa, Download.

Fritsche, M., M. Uhlemann, R. Dach, E. Orliac, L. Prange, J. Dostal, A. Ruelke, W. Soehne, W. Enderle, J. Martin, E. Schoenemann, T. Springer, R. Zandbergen, Z. Altamimi, J. Chenal, S. Binda, F. Gonzales, R. Swinden (2016): Determination and Maintenance of the Galileo Terrestrial Reference Frame. EGU 2016, April 17-22, Vienna, Austria. Download.

Garcia-Serrano, C., T. Springer, F. Dilßner, C. Flohrer, E. Schönemann, W. Enderle (2016): ESOC’s Multi-GNSS Processing. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Orliac, E., R. Dach, K. Wang, M. Meindl, M. Rothacher, T. Romanyuk, U. Hugentobler, E. Schönemann, W. Enderle (2016): ESA Project on Improving GNSS-Based Precise Orbit Determination by Using Highly Accurate Clocks. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Romero, I., C. Noll, D. Maggert (2016): The IGS RINEX 3 Transition. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Romero, I., M. van Kints, J. Martin, V. Izquierdo, W. Enderle (2016): ESOC Station Network Status and Progress. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Schmid, R., R. Dach, X. Collilieux, A. Jäggi, M. Schmitz, F. Dilssner (2016): Absolute IGS antenna phase center model igs08.atx: status and potential improvements. Journal of Geodesy, Vol. 90, Issue 4, pp. 343-364, Springer, ISSN 0949-7714, DOI: 10.1007/s00190-015-0876-3.

Springer, T., C. Garcia-Serrano, M. van Kints, F. Dilßner, J. Feltens, C. Flohrer, F. Gini, I. Romero, E. Schönemann, W. Enderle (2016): The ESA/ESOC Analysis Center Progress and Improvements. IGS workshop 2016, February 8-12, Sydney, Australia, Download.

Wang, K., M. Meindl, M. Rothacher, E. Schönemann, W. Enderle (2016): Temperature influences in receiver clock modelling. EGU 2016, April 17-22, Vienna, Austria, Download.

2015:

Zandbergen, R., E. Schoenemann, T. Springer, J. Martin, W. Enderle, M. Uhlemann, M. Fritsche, R. Dach, L. Prange, E. Orliac, Z. Altamimi, J. Chenal, W. Soehne, J. Dostal, A. Rülke, F. Gonzalez, R. Swinden, S. Binda (2015): The Galileo Terrestrial Reference Frame and the Galileo Orbit Validation Facility. 5th Galileo Science Colloquium 2015, October 27-29, Braunschweig, Germany, Download.

Enderle, W., D. Navarro-Reyes, F. Gonzalez, E. Schoenemann, R. Zandbergen (2015): SLR measurements and their importance for Galileo. ILRS Technical Workshop 2015, October 26-30, Matera, Italy, Download.

Schönemann, E., T. Springer, F. Dilßner, C. Garcia Serrano, C. Flohrer, F. Reichel, W. Enderle, R. Zandbergen (2015): Precise Orbit Determination for GNSS Satellites. 5th Galileo Science Colloquium 2015, October 27-29, Braunschweig, Germany, Download.

Reichel, F., E. Schönemann, T. Springer, M. Becker, W. Enderle (2015): Analysis of Multi-GNSS Observations and the Challenges of their Combination. 5th Galileo Science Colloquium 2015, October 27-29, Braunschweig, Germany, Download.

Flohrer, C., T. Springer, M. Otten, C. Garcia Serrano, F. Dilßner, E. Schönemann, W. Enderle (2015): Using SLR for GNSS orbit model validation. ILRS Technical Workshop 2015, October 26-30, Matera, Italy, Download.

Dilßner, F., T. Springer, E. Schönemann, R. Zandbergen, W. Enderle (2015): Side-effects of a bad attitude: How GNSS spacecraft orientation errors affect solar radiation pressure modelling. EGU 2015, April 12-17, Vienna, Austria, Download.

Gerzen, T., J. Feltens, N. Jakowski, I. Galkin, R. Denton, B. Reinisch, R. Zandbergen (2015): Validation of plasmasphere electron density reconstructions derived from data on board CHAMP by IMAGE/RPI data. Advances of Space Research, Vol. 55, Iss. 1, pp. 170 – 183, 1 January 2015, 1-s2.0-S0273117714005018, DOI: http://dx.doi.org/10.1016/j.asr.2014.08.005.

2014:

Dilßner, F., T. Springer, E. Schönemann, W. Enderle (2014): Estimation of Satellite Antenna Phase Center Corrections for BeiDou. IGS workshop 2014, June 23-27, Pasadena, USA, Download.

Gini, F., M. Otten, T. Springer, W. Enderle, S. Lemmens, T. Flohrer (2014): Precise orbit determination of the GOCE re-entry phase. 5th International GOCE user workshop, November 25-28, Paris, France, Download.

Schönemann, E., T. Springer, F. Dilßner, W. Enderle, R. Zandbergen (2014): GNSS Analysis in a Multi-GNSS, Multi-Signal Environment. IGS workshop 2014, June 23-27, Pasadena, USA, Download.

Springer,  T., M. Otten, C. Flohrer, F. Pereira, F. Gini (2014): GNSS Satellite Orbit Modeling at ESOC. IGS workshop 2014, June 23-27, Pasadena, USA, Download.

Springer, T., C. Flohrer, M. Otten, W. Enderle (2014): ESA Reprocessing: Advances in GNSS analysis. IGS workshop 2014, June 23-27, Pasadena, USA, Download.

2013:

Enderle, W., L. Agrotis, R. Zandbergen, M. van Kints, J. Martin (2013): Real-Time GNSS Activities at ESA. GPS World, Vol. 24, No. 11, Download.

2012:

Dilßner, F., T. Springer, J. Weiss, G. Gienger, W. Enderle (2012): GNSS satellite attitude characteristics during eclipse season. IGS workshop 2012, July 23 – 27, Olsztyn, Poland, Download.

Dilßner, F., T. Springer, R. Schmid, W. Enderle (2012): Estimation of azimuthal satellite antenna phase center variations. IGS workshop 2012, July 23 – 27, Olsztyn, Poland, Download.

Enderle, W., R. Zandbergen, T. Springer, L. Agrotis (2012): Directions 2013: Galileo and GNSS to the Fore. GPS World, Vol. 23, No. 12, Download.

Gienger, G.,  Pereira, P. (2012): Towards Automated Determination of Orbit Maneuvers for GNSS Satellites. Proceedings of the 1st International Academy of Astronautics Conference on Dynamics and Control of Space Systems (DyCoSS), March 19 – 21, Porto, Portugal, Download.

Schönemann, E., T. Springer, R. Dach, L. Prange, M. Becker, U. Hugentobler, R. Weber, W. Enderle, A. Jäggi (2012): Development of a new combination software. IGS workshop 2012, July 23 – 27, Olsztyn, Poland, Download.

2011:

Dilßner, F., T. Springer, W. Enderle (2011): GPS IIF yaw attitude control during eclipse season. AGU Fall Meeting 2011, December 9, San Francisco, USA, Download.

Dilßner, F., M. Otten, T. Springer, C. Flohrer, D. Svehla, R. Zandbergen (2011): GPS satellite antenna parameters from combined ground-based and space-borne data processing. EGU 2011, April 3-8, Vienna, Austria, Download.

Dilßner, F., R. Dach, R. Schmid, T. Springer, R. Zandbergen (2011): Updating the IGS processing standard: new GLONASS satellite antenna corrections for igs08.atx. EGU 2011, April 3-8, Vienna, Austria, Download.

Dilßner, F., T. Springer, G. Gienger, J. Dow (2011): The GLONASS-M satellite yaw-attitude model. Adv Space Res 47 (1), 160-171, DOI: 10.1016/j.asr.2010.09.007.

Dilßner, F., T. Springer, G. Gienger, R. Zandbergen (2011): Dancing in the Dark: How GNSS Satellites Cross the Earth’s Shadow. TU München, January 24, Munich, Germany, Download.

Feltens, J., M. Angling, N. Jackson-Booth, N. Jakowski, M. Hoque, M. Hernández-Pajares, A. Aragón-Angel, R. Orús and R. Zandbergen (2011): “Comparative testing of four ionospheric models driven with GPS measurements”, Radio Science, Vol. 46, RS0D12, doi: 10.1029/2010RS004584, 2011.

Springer, T. F. Dilßner, D. Escobar, D. Svehla, C. Flohrer, R. Zandbergen (2011): NAPEOS: The ESA/ESOC tool for space geodesy, EGU 2011, April 3-8, Vienna, Austria, Download.

2010:

Dilßner, F. (2010): GPS IIF-1 satellite antenna phase center and attitude modeling. InsideGNSS, September, Download.

Dilßner, F., T. Springer, C. Flohrer, J. Dow (2010): Estimation of Phase Center Corrections for GLONASS-M Satellite Antennas. J. Geod. 84 (8), 467-480, DOI: 10.1007/s00190-010-0381-7.

Dilßner, F., T. Springer, J. Dow (2010): A new yaw-attitude model for eclipsing GLONASS-M satellites. COSPAR 2010, July 18-25, Bremen, Germany.

Dilßner, F., T. Springer, J. Dow (2010): Update of the IGS antenna phase center model: new GLONASS satellite antenna corrections from CODE and ESOC. IGS workshop 2010, June 28 – July 2, Newcastle, England.

Dilßner, F., T. Springer, J. Dow (2010): Modelling the GLONASS-M satellite yaw-attitude during eclipse seasons. IGS workshop 2010, June 28 – July 2, Newcastle, England.

Feltens, J. (2010): ”Hyperboloidal coordinates: transformations and applications in special constructions”, J. Geod., 85, 239 – 254.

Feltens, J., M. Angling, N. Jakowski, M. Hernández-Pajares and R. Zandbergen (2010c): “Global Ionospheric Monitoring and Navigation Systems”, presentation at the Beacon Satellite Symposium, Barcelona, Spain, 7 – 11 June, 2010.

Feltens, J., M. Angling, N. Jakowski, M. Hernández-Pajares and R. Zandbergen (2010b): “GNSS Contibution to Next Generation Global Ionospheric Monitoring”, presentation at the Beacon Satellite Symposium, Barcelona, Spain, 7 – 11 June, 2010.

Feltens, J., M. Angling, N. Jackson-Booth, N. Jakowski, M. Hoque, C. Mayer, M. Hernández-Pajares, A. García-Rigo, R. Orús-Perez, A. Aragón-Angel, and M. Juan Zornoza (2010a): “Recommendations for a New European Ionosphere Monitoring System”, Navigation Support Office, ESA Study Final Report DOPS-SYS-RP-5001-OPS-GN, 20 January 2010.

Krankowski A., M. Hernández-Pajares, J. Feltens, A. Komjathy, S. Schaer, A. García-Rigo and P. Wielgosz (2010): “Present and future IGS Ionospheric products”, IGS Workshop, 28 June – 2 July 2010, Newcastle upon Tyne, U.K.

Schönemann, E., A. Hauschild, P. Steigenberger, T. Springer, J. Dow, O. Montenbruck, U. Hugentobler, M. Becker (2010): New Results from GIOVE: The CONGO-Network and the Potential of Tracking Networks with Multiple Receiver and Antenna Types. EGU 2010, May 2-7, Vienna, Austria.

Svehla, D., E. Schönemann, D. Escobar, T. Springer (2010): Complete relativistic modelling of the GIOVE-B clock parameters and its impact on POD, track-track ambiguity resolution and precise timing. IGS workshop 2010, June 28 – July 2, Newcastle, England, Download.

2009:

Dilßner, F., Springer, T., Dow, J. (2009): Schätzung von Phasenzentrumskorrekturen für GLONASS-Satellitenantennen. 7. GNSS-Antennen-Workshop, March 19-20, Geodätisches Institut, TU Dresden, Germany.

Feltens, J. (2009): ” Vector method to compute the Cartesian ( X , Y , Z ) to geodetic (f,l,h) transformation on a triaxial ellipsoid”, J. Geod., 83, 129-137.

Hernández-Pajares, M., J.M. Juan, J. Sanz, R. Orus, A. Garcia-Rigo, J. Feltens, A. Komjathy, S.C. Schaer and A. Krankowski (2009): “The IGS VTEC maps: a reliable source of ionospheric information since 1998”, Journal of Geodesy, DOI: 10.1007/s00190-008-0266-1.

Schönemann, E., F. Dilßner, D. Svehla, T. Springer, M. Becker, J. Dow, R. Zandbergen (2009): GIOVEA and B – Precursors of a New Era: Signal and Clock Quality and the Achievable Orbit Accuracy. 2nd International Colloquium – Scientific and Fundamental Aspects of the Galileo Programme, Padua, Italy.

Schönemann, E., P. Alfaro, T. Springer, M. Becker, J. Dow, R. Zandbergen (2009): Limitations for near-real-time orbit and clock products and first results of a normal equation stacking approach for orbit and clock determination. EGU 2009, April 19-24, Vienna, Austria.

Schönemann, E., T. Springer, M. Otten, M. Becker (2009): Where is GIOVE-A exactly? – Using Microwaves and Laser Ranging for Precise Orbit Determination. GPS World, Vol. 20, No. 7, Download.

Schmid, R., P. Steigenberger, R. Dach, M. Schmitz, F. Dilßner, U. Hugentobler (2009): Interactions of the IGS reprocessing and the IGS antenna phase center model. AGU Fall Meeting, December 14, San Francisco, USA.

Springer, T. and Dilßner, F. (2009): SVN49 and Other GPS Anomalies – Elevation-Dependent Pseudorange Errors in Block IIRs and IIR-Ms. InsideGNSS, July/August, Download.

2008:

Dilßner, F., G. Seeber, G. Wübbena, M. Schmitz (2008): Impact of Near-Field Effects on the GNSS Position Solution. In: Proceedings of the 21st International Technical Meeting of the Satellite Division of the Institute of Navigation ION GNSS 2008, September 16-19, Savannah, Georgia, USA, http://www.geopp.de/download/dilssnerion2008.pdf.

Feltens, J. (2008): ”Vector methods to compute azimuth, elevation, ellipsoidal normal, and the Cartesian (X,Y,Z) to geodetic (f,l,h) transformation”, J. Geod., 82, 493-504.

Springer, T., F. Dilßner, E. Schönemann, M. Otten, I. Romero, J. Tegedor, F. Pereira, J. Dow (2008): ESOC new developments & innovations. International GNSS Service Analysis Center Workshop, June 2-6, Miami Beach, Florida, USA.

Springer, T., F. Dilßner, E. Schönemann, I. Romero, J. Tegedor, F. Pereira, J. Dow (2008). ESOC IGS reprocessing. International GNSS Service Analysis Cen-ter Workshop, June 2-6, Miami Beach, Florida, USA.

Springer, T., F. Dilßner, E. Schönemann, I. Romero, J.Tegedor, F. Pereira, J. Dow (2008): ESOC combined GNSS processing. International GNSS Service Analysis Center Workshop, June 2-6, Miami Beach, Florida, USA.

2007:

Feltens, J. (2007), “Development of a new three-dimensional mathematical ionosphere model at European Space Agency/European Space Operations Centre”, Space Weather, 5, S12002, doi:10.1029/2006SW000294.

Schönemann, E., T. Springer, M. Otten, M. Becker, J. Dow (2007): GIOVE-A precise orbit determination from microwave and satellite laser ranging data – first perspectives for the Galileo constellation and its scientific use. In: Proceedings of the First Colloquium on Scientific and Fundamental Aspects of the Galileo Programme, October 1-4, Toulouse, France.

2006:

Feltens, J. and J. Dow, (2006): „Realized and Planned Improvements in ESA/ESOC Ionosphere Modelling”, IGS Presentation, in Proceedings of the 2006 IGS Workshop, ESOC, Darmstadt, May 8-11, 2006.

Leinen, S., M. Becker, J. Dow, J. Feltens, and K. Sauermann (2006): “Geodetic Determination of Radio Telescope Antenna Reference Point and Rotation Axis Parameters”, Journal of Surveying and Engineering (JoSE), DOI: 10.1061/(ASCE)0733-9453(2007)133:2(41).

2005:

Feltens, J., J. Dow, G. Billig, D. Fornarelli, S. Pallaschke, B. Smeds, H.-J. Volpp, P. Escoubet, H. Laakso (2005): “Ionosphärischer Einfluß auf die Satellitenkommunikation im S-Band”, Invited Presentation, in Proceedings of the 2nd National Workshop on Space Weather, DLR Neustrelitz, Neustrelitz, Germany, September 26-27, 2005.

Dow, J.M., C. García, J. Feltens, T. Springer, J. Perez, H. Boomkamp, E. Rojo, I. Romero (2005): “The ESA/ESOC IGS Analysis Centre Annual Report 2003-2004”, IGS 2002 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens, J., J. Dow, M. Becker, S. Leinen, K. Sauermann (2005): “The ESA Tracking Site Directory Version II”, in Proceedings of the 28th ESA Antenna Workshop on Space Antenna Systems and Technologies, ESA/ESTEC, Noordwijk, The Netherlands, May 31 – June 3, 2005.

2004:

Feltens, J., J. Dow, G. Billig, D. Fornarelli, S. Pallaschke, B. Smeds, H.-J. Volpp, P. Escoubet, H. Laakso (2004): “Relation of RF Link Degradations Observed on Cluster and Other Spacecraft to Spread-F with the Aid of IGS TEC Maps”, Invited Presentation, in Proceedings of the 2nd ESA Workshop on Satellite Navigation User Equipment Technologies NAVITEC ‘2004, ESA/ESTEC, Noordwijk, The Netherlands, December 8-10, 2004.

Billig, G., J. Dow, J. Feltens, D. Fornarelli, S. Pallaschke, B. Smeds, H.-J. Volpp, P. Escoubet, H. Laakso (2004): “RF link degradation by Spread-F, observed on Cluster and other ESA Spacecraft”, Tracking, Telemetry and Command Systems for Space Applications, TTC 2004, September 7-9, 2004, ESA/ESOC.

Laakso, H., P. Escoubet, G. Billig, J. Dow, J. Feltens, D. Fornarelli, S. Pallaschke, B. Smeds, H.-J. Volpp (2004): “RF Link Degradations by Spread-F Observed on Cluster Spacecraft”, 2004 Western Pacific Geophysics Meeting, August 16-20, 2004, Honolulu, Hawaii.

Feltens, J., J.M.Dow, G.Billig, D.Fornarelli, S.Pallaschke, B.Smeds, H.-J.Volpp, P.Escoubet, H.Laakso (2004): „Usage of IGS TEC Maps to explain RF Link Degradations by Spread-F, observed on Cluster and other ESA Spacecraft”, IGS Presentation, in Proceedings of the 2004 IGS Workshop & Symposium, AIUB, Berne, Switzerland, March 1-5, 2004.

2003:

Hernandez-Pajares,M., J.Feltens, P.Heroux, S.Schaer and B.D.Wilson (2003): “IGS activities on measurements techniques in the Ionosphere: Global TEC Maps”, IUGG2003, Sapporo Japan, July 2, 2003.

Hernandez-Pajares,M. and J.Feltens (2003): “IGS Ionosphere Working Group Activities: Update since September 2002”, Presentation at the 22th IGS GB Meeting, Nice, France, April 6, 2003.

Feltens,J. (2003b): “The Activities of the Ionosphere Working Group of the International GPS Service (IGS)”, peer-reviewed paper in GPS solutions, Vol. 7, No. 1, p 41 ff, May 2003.

Feltens,J. (2003a): “The International GPS Service (IGS) Ionosphere Working Group”, peer-reviewed paper in Advances in Space Research, Vol. 31, No. 3, p 635-644, 2003.

Billig,G., J.Feltens, S.Pallaschke, B.Smeds, H.-J.Volpp (2003): “Cluster AGC Fluctuations Working Group Final Report”, ESA Technical Note CL-COM-RP-1001-TOS, 22 December 2003.

2002:

Feltens,J. and M.Hernandez-Pajaes (2002f): „2002 IGS Activities in the Area of the Ionosphere”, IGS 2002 Technical Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. and M.Hernandez-Pajaes (2002e): „2002 IGS Activities in the Area of the Ionosphere”, IGS 2002 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. (2002d): „Current Status of ESOC Ionosphere Modelling and Planned Improvements”, IGS Presentation, in Proceedings of the 2002 IGS Analysis Center Workshop, NRCan, Ottawa, Ontario, Canada, April 8-11, 2002.

Feltens,J. (2002c): „Iono_WG Status Report and Outlook – Position Paper -”, IGS Presentation, in Proceedings of the 2002 IGS Analysis Center Workshop, NRCan, Ottawa, Ontario, Canada, April 8-11, 2002.

Feltens,J. (2002b): „Résumé of Three Years of Iono_WG Activities and Status of Comparisons & Validations”, IGS Presentation, in Collection of Papers of the IGS/IAACs Ionosphere Workshop, ESOC, Darmstadt, Germany, January 17-18, 2002.

Feltens,J. (2002a): „Current Status of ESOC Ionosphere Modelling and Planned Improvements”, IGS Presentation, in Collection of Papers of the IGS/IAACs Ionosphere Workshop, ESOC, Darmstadt, Germany, January 17-18, 2002.

2001:

Feltens,J. (2001b): „2001 IGS Activities in the Area of the Ionosphere”, IGS 2001 Technical Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. (2001a): „2001 IGS Activities in the Area of the Ionosphere”, IGS 2001 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J., N.Jakowski and J. Cisak (2001): „The International GPS Service (IGS) Ionosphere Working Group Activities”, Presentation at the Antarctic Geodesy Symposium 2001 (AGS’01), Saint-Petersburg, Russia, July 17-21, 2001.

Feltens,J. and P.H. Doherty (2001): „The International GPS Service (IGS) Ionosphere Working Group”, Presentation at the International Beacon Satellite Symposium, Boston College, Chestnut Hill, MA 02167, U.S.A., June 3-6, 2001.

Feltens,J., N.Jakowski and C.Noll (2001): „High-Rate SolarMax IGS/GPS campaign „HIRAC/SolarMax“, Crustal Dynamics Data Information System (CDDIS) bulletin, 16(3), 2001.

I. Romero, C. García Martínez, J.M. Dow, R. Zandbergen, GLONASS Precise Orbit Determination, Proceedings GNSS 2001, Seville, Spain, May 2001.

I. Romero, C. García Martínez, J.M. Dow, R. Zandbergen, Moving GPS Precise Orbit Determination Towards Real-Time, Proceedings GNSS 2001, Seville, Spain, May 2001.

2000:

Feltens,J. (2000c): „2000 IGS Activities in the Area of the Ionosphere”, IGS 2000 Technical Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. (2000b): „2000 IGS Activities in the Area of the Ionosphere”, IGS 2000 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. (2000a): „Die Ionosphären-Arbeitsgruppe der Internationalen GPS Service (IGS)”, in Proceedings Nationaler Workshop zum Weltraumwetter, DLR, Neustrelitz, Germany, October 26-27, 2000, pp 161-169.

I. Romero, C. García Martínez, R. Kahle, J.M. Dow, T. Martín Mur, Precise Orbit Determination of GLONASS Satellites at the European Space Agency, Proceedings COSPAR 2000, Warsaw, Poland, July 2000.

I. Romero, R. Vignjevic, Deployable Space Manipulator Closed-Loop Control, Ideas and Possibilities of Using GPS as a Sensor, Advances in Space Research (to appear)

1999:

Feltens,J. and S.Schaer (1999b): „1999 IGS Activities in the Area of the Ionosphere”, IGS 1999 Technical Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. and S.Schaer (1999a): „The IGS Ionosphere Working Group Activities in 1999”, IGS 1999 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. and C.Noll (1999): „GPS data collected during August 1999 solar eclipse“, Crustal Dynamics Data Information System (CDDIS) bulletin, 15(1), 1999.

Jakowski,N., S.Schlüter, S.Heise and J.Feltens (1999b): „Auswirkungen der Sonnenfinsternis vom 11. August 1999 auf die Ionosphäre“, Allgemeine Vermessungs-Nachrichten (AVN), 11-12/1999, Wichmann Verlag, pp 370-373.

Jakowski,N., S.Schlüter, S.Heise and J.Feltens (1999a): „Satellite Technology Glimpses Ionospheric Response to Solar Eclipse“, EOS, Transactions, American Geophysical Union, Vol. 80, No. 51, December 21, 1999, pp 621 ff.

Feltens,J. (1999b): „Routine Production of Ionosphere TEC Maps at ESOC“, IGS Presentation, in Proceedings of the 1999 IGS Analysis Centers Workshop, SIO, La Jolla, California, U.S.A., June 8-10, 1999.

Feltens,J. (1999a): „IGS Products for the Ionosphere – One Year of Iono_WG Activities –“, IGS Presentation, in Proceedings of the 1999 IGS Analysis Centers Workshop, SIO, La Jolla, California, U.S.A., June 8-10, 1999.

1998:

Feltens,J. (1998c): „1998 IGS Ionosphere Working Group Status Report”, IGS 1998 Status Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J. (1998b): „Efforts towards a Combined IGS Ionosphere Product started”, IGS 1998 Annual Report, The IGS Central Bureau, NASA Jet Propulsion Laboratory California Institute of Technology, Pasadena, California, U.S.A.

Feltens,J., J.M.Dow, T.J.Martin-Mur, C.Garcia-Martinez and P. Bernedo (1998): „Routine Production of Ionosphere TEC Maps at ESOC – First Results”, IGS Presentation, in Proceedings of the 1998 IGS Analysis Centers Workshop, ESOC, Darmstadt, Germany, February 9-11, 1998, pp 273-284.

Feltens,J. (1998a): „Chapman Profile Approach for 3-d Global TEC Representation”, IGS Presentation, in Proceedings of the 1998 IGS Analysis Centers Workshop, ESOC, Darmstadt, Germany, February 9-11, 1998, pp 285-297.

T. Martín Mur, C. García Martínez, Data Analysis of Space Based Relative GPS Experiments , FDS-98, AAS 98-325, 1998.

Schaer,S., W.Gurtner and J.Feltens (1998): „IONEX: The IONosphere Map EXchange Format Version 1”, in Proceedings of the 1998 IGS Analysis Centers Workshop, ESOC, Darmstadt, Germany, February 9-11, 1998, pp 233-247.

1997:

T. Martín Mur, J.M. Dow, Satellite Navigation Using GPS , ESA Bulletin, 1997.

Feltens, J., J.M. Dow, T.J. Martin-Mur, C. Garcia-Martinez, F. Martinez-Fadrique and R. Piriz (1997): Using GPS for Ionospheric Corrections of ESA Tracking Data, Proceedings of the 12th International Symposium on Space Flight Dynamics, 2-6 June 1997, ESOC, Darmstadt, Germany, pp. 121-125.

T. Martín Mur, J.M. Dow, C. García Martínez, Absolute and Relative Navigation of Spacecraft Using GPS – The ATV Rendezvous Predevelopment Flight Demonstrations, 12th International Symposium on Space Flight Dynamics, Darmstadt, Germany, 2-6 June 1997.

P. Bernedo, T. Martín Mur, J.M. Dow, C. García Martínez, Monitoring of Global Navigation Satellite Systems, 12th International Symposium on Space Flight Dynamics, Darmstadt, Germany, 2-6 June 1997.

1996:

Dow,J.M., T.J.Martin-Mur, J.Feltens, C.Garcia-Martinez and M.A.Bayona-Perez (1996): „Orbital and Other Products of the International GPS Service for Geodynamics (IGS)“ Acta Astronautica, Vol. 38, Nos. 4-8, pp. 437-443.

Feltens,J. (1996b): „Ionosphere Maps – A New Product of IGS?“ IGS Ionosphere Session Summary summarised after the IGS Analysis Centre Workshop, Silver Spring, Maryland, USA, March 19 to 21, 1996, in Proceedings of the 1996 IGS Analysis Centers Workshop.

Feltens,J., J.M.Dow, T.J.Martin-Mur, C.Garcia-Martinez and M.A.Bayona-Perez (1996): „Verification of ESOC Ionosphere Modelling and Status of IGS Intercomparison Activity“ IGS Paper presented at the IGS Analysis Centre Workshop, Silver Spring, Maryland, USA, March 19 to 21, 1996, in Proceedings of the 1996 IGS Analysis Centers Workshop.

Feltens,J. (1996a): „Ionosphere Models – A New Product of IGS ?“ IGS Position Paper presented at the IGS Analysis Centre Workshop, Silver Spring, Maryland, USA, March 19 to 21, 1996, in Proceedings of the 1996 IGS Analysis Centers Workshop.

1995:

Casotto, S., J.M. Dow, T. Martín Mur, TOPEX/Poseidon Precise Orbit Determination using GPS Double Difference Phase Observables. COSPAR 30th Scientific Assembly, Hamburg, July 1994. Adv. in Space Res., Vol 16, No. 12, 1995.

Dow, J.M., T. Martín Mur, C. García Martínez, J. Feltens: High Precision Orbits for the International GPS Service for Geodynamics (IGS), COSPAR 30th Scientific Assembly, Hamburg, July 1994. Adv. in Space Res., Vol 16, No. 12, 1995.

Dow,J.M., T.J.Martin-Mur, J.Feltens, C.Garcia-Martinez and M.A.Bayona-Perez (1995): „Orbital and Other Products of the International GPS Service for Geodynamics (IGS)“ Presented at the 46th International Astronautical Congress, Oslo, Norway, October 2 to 6, 1995.

Dow,J.M., T.J. Martin-Mur, J.Feltens and C.Garcia-Martinez (1995): „IGS Orbits for GPS Applications“ Publication dedicated to Erwin Groten on the occasion of his 60th anniversary, June 28, 1995, Darmstadt, Germany.

Feltens,J. (1995): “Non-gravitational Forces on Satellite Orbits.” National Report of the Federal Republic of Germany on the Geodetic Activities in the Years 1991 – 1995. Presented at XXI General Assembly of the International Union for Geodesy and Geophysics (IUGG), Boulder, USA, July 2 to 16, 1995.

Feltens,J. and J.M.Dow (1995): „Establishment of an Ionosphere Monitoring Facility at ESOC“ Publication dedicated to Erwin Groten on the occasion of his 60th anniversary, June 28, 1995, Darmstadt, Germany.

Garcia-Martinez,C., J.M.Dow, T.J.Martin-Mur, J.Feltens and M.A. Bayona-Perez (1995): „The GPS receiver network of ESOC: Maspalomas, Kourou, Kiruna, Perth and Villafranca“ International GPS Service for Geodynamics, 1994 Annual Report, September 1, 1995, pp. 281-286, IGS Central Bureau, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA.

Martín Mur, T.J., Estimation of Precise GPS Clock Bias values by the ESOC IGS Analysis Centre, Proceedings of the 1995 IGS Workshop, May 1995.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1995): „Annual report of the ESOC IGS Analysis Centre to the IERS for 1994“ IERS TN 19, Observatoire de Paris, September 1995, pp. P-13 to P-17.

Martin-Mur,T.J., J.M.Dow, N.Bondarenco, C.Garcia-Martinez and J.Feltens (1995): „Use of GPS for Precise and Operational Orbit Determination at ESOC“ Proceedings of the ION (Institute of Navigation) GPS-95.

Martin-Mur,T.J., J.M.Dow, C.Garcia-Martinez and J.Feltens (1995): “The ESOC / IGS Analysis Centre.” International GPS Service for Geodynamics, 1994 Annual Report, September 1, 1995, pp. 1163-1168, IGS Central Bureau, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA

1994:

Casotto, S., M. Romay Merino, T. Martín Mur, J.M. Dow, Sub-decimetre Determination of the TOPEX/Poseidon Orbit. OAD WP No. 544, ESA/ESOC, August 1994.

Dow, J.M., T.J. Martín Mur, M.M. Romay Merino: ESA’s Precise Orbit Determination Facility, ESA Bulletin no. 78, May 1994.

Dow,J.M., T.J.Martin-Mur, C.Garcia-Martinez and J.Feltens (1994): „High Precision Orbits for the International GPS Service for Geodynamics (IGS)“ COSPAR pp. (12)51-(12)54.

Dow,J.M., T.J.Martin-Mur, S.Casotto, J.Feltens, C.Garcia-Martinez and M.A.Bayona-Perez (1994): „Determination of Satellite Orbits with GPS“ Presented at the International Symposium on Space Flight Dynamics, St.Petersburg – Moscow, Russia, May 22 to 28, 1994.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1994): „Annual report from the ESOC / IGS Analysis Centre to the IERS for 1993“ March 1994, ESA / European Space Operations Centre.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1994): „Annual Report from the ESOC Analysis Centre for 1993“ P-23 to P-35, IERS TN 17, September 1994.

1993:

Dow,J.M., C.Garcia-Martinez, T.J.Martin-Mur, J.Feltens (1993): „The ESOC IGS Network Centre: Operations and Communications“ Presented at the IGS Network Operations Workshop International GPS Service for Geodynamics, Silver Spring, Maryland, USA, October 18 to 20, 1993, no proceedings.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1993): „ESOC Report to the 1993 IGS Analysis Centre Workshop“ Presented at the IGS Analysis Centre Workshop, International GPS Service for Geody­namics, Ottawa, Ontario, Canada, October 12 to 14, 1993, no proceedings.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1993): „IGS Activities at ESOC“ Presented at the European Geophysical Society XII General Assembly, May 3 to 7, 1993, Wiesbaden, Germany , no proceed­ings.

Martin-Mur,T.J., J.M.Dow, J.Feltens and C.Garcia-Martinez (1993): „ESOC Station Coordinate Solutions for the IGS’92 Campaign, Including Epoch’92“ Proceedings of the International Association of Geodesy IGS Workshop, Berne, Switzerland, March 25-26, pp 275-284.

Dow,J.M., T.J.Martin-Mur, J.Feltens and C.Garcia-Martinez (1993): „The ESOC GPS Facility: Report on the IGS 1992 Campaign and Outlook“ Proceedings of the International Association of Geodesy IGS Workshop, Berne, Switzerland, March 25-26, 1993, pp 111-122.

1992:

Dow,J.M., J.Feltens, T.J.Martin-Mur, S.Frey, C.Garcia-Martinez and S.Casotto (1992): „Satellite Determinations of Earth Orientation with Emphasis on GPS“ Presented at the World Space Congress, Washington, August 28 to September 9, 1992.

Dow,J.M., J.Feltens, P.Duque and F.Sarti (1992): „A GPS Orbit Determi­nation and Analysis Facility“ Proceedings of the 6th International Geodetic Symposium on Satellite Positioning, Columbus (Ohio), U.S.A, March 17 to 20, 1992, Vol. I pp 472-481.

1991:

Feltens,J. (1991): „Nicht-gravitative Störeinflüsse bei der Modellierung von GPS-Erdumlaufbahnen“ Deutsche Geodätische Kommission, Reihe C (Dissertationen), Heft 371, München, 1991.