Transformation parameters between national height systems and

EVRF2007

Martina Sacher, Jens Luthardtpresented by Wolfgang Söhne

255th EUREF TWG, PadovaMarch, 03, 2011

Background

54th TWG in Lisbon:− ML: no acceptance procedure by EUREF TWG for

national height realizations due to lack of available data

− JI: majority of countries computed transformation parameters for the national height systems

− JT: proceeding of INSPIRE urges EUREF to put the European reference systems on the upcoming symposiums’ agenda

− JI: will present an updated list of transformation parameters and an overview on the national situation (→ AI)

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Information system for European Coordinate Reference Systems

55th EUREF TWG, PadovaMarch, 03, 2011

CRS-EU

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Common project of EUREF / EuroGeographics / BKG Address www.crs-geo.eu Information

• was provided by the National Mapping Agencies (NMA)

• or prepared / compiled by BKG and agreed with NMAs

• always unified and prepared regarding ISO-Standard 19111

CRS-EU

55th EUREF TWG, PadovaMarch, 03, 2011

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CRS-EUStructure

CRS-EU

CRS Descriptions

Content national CRS

European Countries

Description of CRS

Parameter for transformation to

pan-European CRS

pan-European CRS

Europe

Description of CRS ETRS89

EVRF2000 EVRF2007

CRS Overview References

Links

Contact

55th EUREF TWG, PadovaMarch, 03, 2011

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Description of pan-European CRS − EVRF2007

e.g. EVRF2007_AMST / NH as PDF− transformation parameters from national CRS of height to

EVRF2007 for 26 countriese.g. DE_AMST / NH to EVRF2007 as PDF

− nevertheless, transformation parameters to EVRF2000 are still included

− description of national CRS (height) were added for 7 countries

Possibility of online-transformation of single points for heights

New in CRS-EU since 2010

55th EUREF TWG, PadovaMarch, 03, 2011

755th EUREF TWG, PadovaMarch, 03, 2011

CRS-EU

855th EUREF TWG, PadovaMarch, 03, 2011

CRS-EU

955th EUREF TWG, PadovaMarch, 03, 2011

CRS-EU

TWG xx March 2011

CRS-EU OnlinetransformationHeights

1155th EUREF TWG, PadovaMarch, 03, 2011

News in CRS-EU

Publishing of new information

▪ In April 2010 TWG sent letters to NMAs with− calculated transformation parameters to EVRF2007− draft of description of national vertical reference system in

the case of implementation of a new CRS in the respective country

− ask for verifying the data, supplement missing data and details

− ask for agreement to publish the information in CRS-EU▪ 27 countries were contacted, about half of them replied▪ Only verified information have been released in CRS-EU

(see the table)

55th EUREF TWG, PadovaMarch, 03, 2011

Status of the information in CRS-EU (height)

55th EUREF TWG, PadovaMarch, 03, 2011

Country CRS-Description CRS-Description (new) Transformation to EVRF2000 Transformation to EVRF2007Austria released released existingBelgium released released releasedBosnia / Hercegovina existing existing existingBulgaria released released releasedSwitzerland released released releasedCzech Republic released released releasedGermany released released releasedDenmark released released existingEstonia released released releasedSpain released released existingFinland released existing released existingFrance released released existingGreat Britain released released existingCroatia released released released releasedHungary released released existingItaly released released releasedLithuania released released releasedLatvia released released releasedNetherlands released existing released existingNorway released existing released existingPoland existing existing existing existingPortugal released released existingRomania released released releasedRussia existing EVRF2000 not available EVRFxx will be available futureSweden released released released releasedSlovenia released existingSlovak Republic released released released releasedTurkey released EVRF2000 not available EVRFxx will be available futureUkraine existing EVRF2000 not available EVRFxx will be available future

existing: parameter estimated but not to be published