The problem of temporal validity of reference coordinates in the context of reliability of the ETRS89 system realization in Poland

• Autorzy: Szafranek K.

Identyfikatory

DOI

10.2478/v10018-012-0023-9

• Języki publikacji: EN

Abstrakty

EN

The IAG (International Association of Geodesy) Sub-Commission for the European reference frame (EUREF) passed a resolution recommending application of the ETRF2000 frame as national realizations of the ETRS89 reference system during the XXth EUREF Symposium in Gävle (Sweden) in 2010. The PL-ETRF2000 system is comprised of EPN (EUREF Permanent Network) sites. Their coordinates and their temporal changes (velocities) were accurately determined on the basis of long-term GNSS observations. The transfer of the PLETRF2000 system onto the territory of Poland is realized by the ASG-EUPOS (Active Geodetic Network – European Position Determination System) permanent sites network. The ASG-EUPOS tasks include also system maintenance by continuous or periodical control of the coordinates and velocities constancy. According to the current Regulation of the Ministry of Administration and Digitization concerning geodesic, gravimetric and magnetic warps, the accuracy of sites of the fundamental warp (EPN sites belonging to ASG-EUPOS) may not be worse than 0.01 m for horizontal position and 0.02 m for geodesic height. It results in the necessity to monitor the performance of the reference sites for proper maintenance of the reference system. A new team for modeling deformations in Europe was established within the EUREF Working Group (The EUREF Working Group on Deformation Models) during the EUREF 2012 Symposium in Paris. One of its tasks is taking geo-kinematic models into consideration for national realizations of the ETRS89 and maximum usage of knowledge concerning the velocity field. The paper deals with the problem of temporal validity of the catalogue coordinates and the necessity of periodical updating them on the basis of velocities derived from long-term observations. Although Poland is located in a tectonically calm area and the intraplate velocities are small, some of the EPN and ASG-EUPOS sites have significant velocities and are subject to vertical movements. Lack of periodical updating of the coordinates realizing the reference system will cause lack of fulfillment of the assumed accuracy criterion. Analysis of horizontal and vertical velocities of sites belonging to the fundamental warp lead to assumption that two sites will exceed horizontal criterion in a period of time shorter than 10 years counting from the reference epoch (i.e. from 2011.0): KATO horizontal coordinates should be updated in 2014 and GWWL in 2021. Mores sites will exceed vertical criterion: BOGI (2021), GWWL (2015), KATO (2019), SWKI (2019) and ZYWI (2021). The vertical component updating will require of course changes of the horizontal component (coordinates are determined in the Cartesian orthogonal XYZ coordinate system and then recalculated for the ellipsoidal coordinates). Besides periodical coordinates updating it is recommended to conduct repeated processing for the entire network according to the EUREF standards for taking the current GNSS observations into consideration.

Słowa kluczowe

EN

ASG-EUPOS; ETRS89; ETRF; reference frame; coordinates’ stability

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2012
• Tom: Vol. 47, No. 4
• Strony: 177--188
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Szafranek K.

• Military University of Technology

Bibliografia

• International Association of Geodesy Sub-Commission 1.3 on Regional Reference Frames, Working Group on Regional Dense Velocity Fields, 2007-2011: http://epncb.oma.be/IAG/
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• Blewitt G., Lavallée D.: 2002, Effect of annual signals on geodetic velocity. J. Geophys. Res., 107(B7), 2145, doi:10.1029/2001JB000570.
• Bogusz J., Figurski M., Kroszczyński K., Szafranek K.: 2011, Investigation of environmental influences to GNNS coordinates. Acta Geodynamica et Geomaterialia Vol 8, No. 1 (161), 2011, pp. 5-15.
• Bogusz J., Figurski M., Kontny B., Grzempowski P.: 2012a, Unmodeled effects in the horizontal velocity fields: ASG-EUPOS case study. Artificial Satellites Vol. 47, No. 2, 2012, DOI: 10.2478/v10018-012-0014-x, pp. 67-79.
• Bogusz J., Figurski M., Kontny B., Grzempowski P.: 2012b, Horizontal velocity field derived from EPN and ASG-EUPOS satellite data on the example of south-western part of Poland. Acta Geodynamica et Geomaterialia Vol 9, Nr 3 (167), 2012, pp. 349-357.
• Bruyninx C., Altamimi Z., Caporali A., Kenyeres A., Lidberg M., Stangl G., Torres J.A.: 2009, Guidelines for EUREF Densifications.
• Caporali A., Lidberg M., Stangl G.: 2011, Lifetime of ETRS89 coordinates. Presented at the EUREF 2011 Symposium, May 25-27, 2011, Chisinau, Moldova.
• Dach, R., U. Hugentobler, P. Fridez, M. Meindl (Eds): 2007, Bernese GPS Software Version 5.0. User manual, Astronomical Institute, Universtiy of Bern.
• Figurski M., Kamiński P., Kroszczyński K., Szafranek K.: 2009, ASG-EUPOS monitoring with reference to EPN. Artificial Satellites Vol. 44, No. 3, pp. 85-94; DOI: 10.2478/v10018-009-0022-7.
• Figurski M., Kamiński P., Kroszczynski K., Szafranek K.: 2010, Preliminary results of the ASGEUPOS processing in the context of EPN densification and system monitoring. Bulletin of Geodesy and Geomatics Vol. LXIX N. 2-3, 2010, pp. 223-237.
• Figurski M., Bogusz J., Bosy J., Kontny B., Krankowski A., Wielgosz P.: 2011, ASG+”: project for improving Polish multifunctional precise satellite positioning system. Reports on Geodesy No 2 (91) 2011, pp. 51-58.
• Kenyeres A.: 2009, Maintenance of the EPN ETRS89 coordinates. Presented at the EUREF TWG 2009 Spring Meeting, Feb. 26-27, 2009, Budapest (http://www.euref.eu/TWG/EUREF%20TWG%20minutes/49-Budapest2009/03-eETRSmaint_TWGrepBP.pdf).
• Kenyeres A.: 2012, The implementation of IGS08 in the EPN ETRS89 maintenance products. Published online (ftp://epncb.oma.be/pub/station/coord/EPN/IGS08_densification_V4.pdf) in October 2012.
• Kontny B., Bogusz J.: 2012, Models of vertical movements of the Earth crust surface in the area of Poland derived from leveling and GNSS data. Acta Geodynamica et Geomaterialia, v. 9, No. 3(167), 2012, pp. 331-337.
• Lidberg M.: 2012, The EUREF working group on deformation models. Presented at the EUREF 2012 Symposium, June 6-8, 2012, Paris, France (http://euref2012.ign.fr/pdf/s3/3_8.pdf).
• Szafranek K., Bogusz J., Figurski M.: GNSS reference solution for permanent sites stability monitoringand geodynamical investigations: an ASG-EUPOS case study. (Paper submitted to Acta Geodynamica et Geomaterialia in October 2012).
• Regulation of the Minister of Administration and Digitalization concerning geodetic, gravimetric and magnetic warps: 14th of February 2012, (Dz. U. Nr 63, poz. 352).
• Regulation of the Polish Government concerning national spatial reference system (project).
• http://igscb.jpl.nasa.gov/
• http://www.asgeupos.pl/
• http://www.epncb.oma.be

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).