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Atmospheric Impact on GPS Observations

Atmospheric Impact on GPS Observations. Project of GEODESY/GIANT program of SCAR WGGGI Report 2000 - 2002 Prepared by Jan Cisak - project leader. WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002. Project Background.

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Atmospheric Impact on GPS Observations

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  1. Atmospheric Impact on GPS Observations Project of GEODESY/GIANT program of SCAR WGGGI Report 2000 - 2002 Prepared by Jan Cisak - project leader WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  2. Project Background • Establishment of the project - Tokyo 07- 2000 • Receiving a grant from Polish Committee on Scientific Research Warsaw 03-2001 • Report in Siena coordinators meeting Siena 07 - 2001 • Presentation of first results on AGS’01 St. Petersburg 07 - 2001 • Presentation of Iono WG Activities St. Petersburg 07 - 2001 • Presentation of WGGGI/GIANT Activities Darmstadt 01- 2002 • International Workshop Warsaw 05 - 2002 • WGGGI meeting Shanghai 07 - 2002 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  3. International Cooperation • Irk Shagimuratov - IZMIRAN, Kaliningrad, Russia • Yevgen Zanimonskiy - „Metrologia” Kharkov, Ukraine • Alla Zanimonskaya - „Metrologia” Kharkov, Ukraine • Reinhard Dietrich - Institut für Planetare GeodäsieTechnische Universität Dresden • Sibylle Vey - Institut für Planetare GeodäsieTechnische Universität Dresden • Henk Brolsma - Australian Antarctic Division • John Manning - National Mapping Division, Australia • Glenn Johnston - National Mapping Division, Australia • Larry Hothem - National Mapping DivisionUS Geological Survey • Michael Mayer- Geodetic Institute (GIK) of the University • ofKarlsruhe (Germany). • Bjorn Johns - UNAVCO     • Joachim Feltens - Iono_WG ChairmanESOC, Darmstadt • Norbert Jakowsky - Deutsches Zentrum für Luft- und • Raumfahrt e.V. (DLR), Institut für Kommunikation und • Navigation, NL, Neustrelitz • Uk Han - Dept. of Environmental Sci. Korea Military • AcademySeoul, Korea WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  4. Contribution of Polish researchers and Organizations to the project • Jan Krynski - Institute of Geodesy and • Cartography, Warsaw • Jan Cisak - Institute of Geodesy and Cartography, • Warsaw • Marcin Sekowski - Institute of Geodesy and • Cartography, Warsaw • Wlodzimierz Baran – University of Warmia and • Mazury, Olsztyn • Andrzej Krankowski - University of Warmia and • Mazury, Olsztyn • Pawel Wielgosz - University of Warmia and • Mazury, Olsztyn • Mariusz Figurski – Warsaw University of • Technology, Warsaw • Michal Kruczyk - Warsaw University of • Technology, Warsaw WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  5. Studying of the repeatability of the vector components during the ionospheric storms STORM OF 15-18 FEB 1999 Day-to-day changes of the Davis-Mawson baseline length (636km) WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  6. Studying of the repeatability of the vector components during the ionospheric storms STORM OF 15-18 FEB 1999 Day-to-day changes of the O’Higgins-Arctowskibaseline length (132 km) WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  7. Conclusions after the first experiments The ionosphere in Antarctic region has considerable influence on the accuracy determination of the vectors. Strong correlation between TEC changes and North, East and Up vector components were obtained. The changing conditions of ionosphere mostly affect height component. The height differences obtained during the quiet and disturbed ionosphere reach a few dozen of millimeters even for 132km long vectors (O’Higgins-Arctowski). Because of the great dynamics of the TEC during the ionospheric storms the special attention should be paid to the differences of vectors co-ordinates obtained from semidiurnal GPS sessions. WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  8. Efects of ionospheric storm on vectors in Europe STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  9. Studying of the repeatability of the vector components during the ionospheric storms STORM OF 3 March 2001 MAXIONO - parameter And number of ambiguity VECTORS WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  10. STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  11. Daily solutions for heights between Antarctic stations and tropospheric parameters from IGS solutions STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  12. Daily solutions for heights between Antarctic stations and tropospheric parameters from IGS solutions STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  13. STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  14. STORM OF 3 March 2001 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  15. Final Remarks • Analysis of recent data does not prove considerable influence of ionosphere storm on resolved vector components • The magnitudes of variations in vector components due to atmospheric impact seem to be dependent on data processing procedure used • No correlation between the strength of ionospheric storms and variability of vector components derived from GPS data was observed • Further investigations on • software applied for data processing • parametrization • data modeling are needed to study atmospheric impact on GPS solutions WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  16. PAPERS PUBLISHED / PRESENTED (1) • Krankowski, A., Baran, L.W., Shagimuratow, I.I., Cisak, J., (2001): Influence of Ionosphere in Arctic and Antarctic Regions on GPS Positioning Precision, SCAR Report, Publication of the Scientific Committee on Antarctic Research, Scott Polar Research Institute, Cambridge,UK • Baran, L.W., Wielgosz, P., Cisak, J., Shagimuratow, I.I., (2001): The Response of Polar Ionosphere to a Magnetic Storm Obtained from GPS Observations, SCAR Report, Publication of the Scientific Committee on Antarctic Research, Scott Polar Research Institute, Cambridge,UK • Kryński, J., Zanimonskiy, Y., (2001): Contribution of Data from Polar Regions to the Investigation of Short Term Geodynamics. First Results and Perspectives, SCAR Report, Publication of the Scientific Committee on Antarctic Research, Scott Polar Research Institute, Cambridge,UK • Manning, J., Cisak, J., (2002): Overview of the SCAR/WG-GGI/GIANT activities within the project on the Atmospheric Impact on GPS Observations in Antarctica and possible fields of cooperation with IGS/Iono WG. Proceedings of IGS/IAACs Ionosphere Workshop, Darmstadt, 17-18 January 2002 • Krankowski, A., Baran, L.W., Shagimuratow, I.I., Cisak, J., (2001): Influence of Ionosphere in Antarctic Regions on GPS Positioning Precision, Proceedings of IGS/IAACs Ionosphere Workshop, Darmstadt, 17-18 January 2002 • Ephishov I.I., Cisak J., Shagimuratov I.I, Wielgosz P. (2002): Phase fluctuations of GPS Signals at High attitude Ionosphere during the Storm, presented on 16th International Wroclaw Symposium “Electromagnetic Compatibility”, June 25 – 28, 2002 WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  17. PAPERS PUBLISHED / PRESENTED (2) • Cisak, J., (2002): Overview of the SCAR/WG-GGI/GIANT Activities as an Introduction to the Workshop, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Figurski, M, (2002): Atmospheric Impact on Precision of the Positioning in Regional GPS Network, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Krynski, J., (2002): Variations in GPS Solutions versus Atmospheric Delay, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Zanimonskiy, Y., Krynski, J., Cisak, J., (2002): Correlation of the Atmospheric and Geodetic time Series of GPS Results. Impact, coincidence or artifact? Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Krankowski, A., (2002): Modeling of the Ionosphere in Polar Regions, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Shagimuratov, I., (2002): Storm-time Ionospheric Effects Obtained from GPS TEC Measurements, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Wielgosz, P., (2002): Use of Deterministic Ionospheric Component in GPS Observations Processing, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

  18. PAPERS PUBLISHED / PRESENTED(3) • Zanimonskaya, A.Y., Prokopov, A.V., (2002): Some Effects of Ionosphere Model Thickness on GPS Results, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Vey, S., (2002): Tropospheric Research using GPS, Activities in Dresden, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Kruczyk, M., (2002): Tropospheric Delay in GPS Permanent Networks – a Tool for Atmosphere Research, Paper presented at the International workshop on "Atmospheric impact on GPS observations focused on polar regions", 15 May 2002, Warsaw, Poland • Kryński, J., Zanimonskiy, Y., Wielgosz, P., (2002): Modelling biases in GPS Positioning Based on Short Observing Sessions, Presented at the XXVII General Assembly of European Geophysical Society 2002, Nice, France, 21-26 April 2002. • Cisak, J., Kryński, J., Zanimonskiy, Y., (2002): GPS and internet in recent remote geophysical research in polar regions (in russian), Paper presented at the International Conference on Modern Progresses of Geodetic Sciences and Industry, 28-30 March, Lvov, Ukraine. • Kryński, J., Cisak, J., Zanimonskaya, A., Prokopov, A., Zanimonskiy, Y., (2002): On some errors in zenith tropospheric delay determination from GPS data, Paper presented at the International Conference on Modern Progresses of Geodetic Sciences and Industry, 28-30 March, Lvov, Ukraine WORKING GROUP ON GEODESY & GEOGRAPHIC INFORMATION Shanghai, China, 14 – 17 July 2002

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