NorwegianNorwegian experiencesexperiences and and viewsviewsregardingregarding nationalnational coordinatecoordinate systemsystem

ImplementationImplementation of ETRSof ETRS in Sloveniain Slovenia

Ljubljana May. 15. 2007Ljubljana May. 15. 2007

Lars BockmannLars BockmannNorwegian Norwegian MappingMapping and and CadastralCadastral AuthorityAuthority

PrefacePrefaceOld geodetic datum - NGO1948

EUREF89 established as the new, officialgeodetic datum from Jan. 1. 1993

SATREF Positioning service in Norway

Long term benefits

Legislation

Education

Old Old NorwegianNorwegian system system NGO1948NGO1948

Established 1948-1970Based on triangulations from 1906 to late 1960sIn Northern Norway distance measurementsBessels ellipsoidGauss-Kruger for map scales up to 1:25 000 8 coordinate axes in NGOMost municipalities use NGO1948, or localsystems based on NGO1948

Euref89Euref89ResponsibilitiesResponsibilities

NMCA responsibility

Establising the National geodetic network Transformation formulas

Users (Municipalities, Public Road Adm. and others) responsibility

Establishing local networks Final implementation of data

EUREF89 EUREF89 NationalNational network network ((stepstep by by stepstep))

Core network - 148 stationsEstablished 1994-95

National network - 787 stationsEstablished 1995-97

Densified national network (Landsnett)1997- 2008 establishing period2007: 15 000 stations

Connection to the national heightsystem by levelling to a certainnumber of the stations

IntroductionIntroduction of EUREF89of EUREF89Main task: Introduction of EUREF89 in the localmunicipalities.

Geodata co-operation projects, administrationby NMCA regional offices

Support by NMCA Euref-team

Guidelines given by NMCA ”Introduction of EUREF89 - step by step”

Geodata Co-operationEstablishing and updating of Norway digital

Municipalities (400)Public Road AdministrationTelenor (telecoms)Electricity companiesAgricultureNSB (railways)NMCA

Players EndeavourJoint mapping following annual geodata plansEstablish and update primary data according to Map Database StandardJoint use of databasesEURO 15 million (2006)

ImplementationImplementation of EUREF89of EUREF89((StepStep by by stepstep))

1. Determine the quality of national and localNGO1948 networks

2. GPS-survey and computation of test pointsand additional transformation points

Test-transformation with regional transformation lib.

3. Local transformation lib. with NMCA and/or local transformation pts

User defined transformation pts are fixed

4. Transformation Cadastral dataMap dataOther relevant data

EUREF89 in the municipalitiesEUREF89 in the municipalities167 of 430 municipalities have changed to EUREF89

Overgang EUREF89 - antall komuner

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ConclusionsConclusions

Introduction of a new geodetic datum has beena major taskMost municipalities have the intentions to change datum, but only large municipalitieshave the means of doing it on their ownThe Geodata-cooperation project has been a presupposition for a successful implementationboth regarding economic and planning aspectsSupport from the NMCA is essential to ensurethat the task is carried out in an efficient and proper way

The main purpose of the SATREF augmentation system is to eliminate the effect of the different error sources in the GNSS satellite system

Correction data

SATREF® controlcentreRawGNSS position

Raw data from base-stations

GNSS survey based on one ofthe SATREF services MPOS, DPOS or CPOS

SATREFCorrection Data for Accurate Positioning

NetworkNetwork--GPSGPS

Network-GPS are operated in the same way as traditional GPS, except that the need for your own base station is eliminated. Instead a VRS (Virtual Reference Station) is generated.

The 6 base stations closest to the rover are used to generate a VRS.

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The GPS network makes The GPS network makes economic sense!economic sense!

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Single station GPS GPS network solution

•230 users in may 07

•CPOS is offered to the entire country, but is only established when there is a sufficient market.

Establishing and management are financed by the users4 users pr station established (2 years commitment and 30.000 NOK each year (EUR 3800))

•42 + 5 permanent geodetic stations are included

•22 new stations will be establishedin 2007: Haukelifjell, Valle, Leikanger, 4 i Trøndelag, 15 i Troms

Coverage areaCoverage areapr may 07pr may 07

Generally good response from usersExamples:

Accuracy/initialisation – very goodOperation is stableGood user support

Benefits for users:Less preliminary work for surveying, less field workNo need for own expensive base stationNo need to secure own base station (e.g. against vandalism)Reduced need for maintenance of national network of fixed fiducial marksNo base station operational costsNo need for specially trained staffNetwork solution – makes economic sense and guarantees quality

Who are the users of CPOS?Who are the users of CPOS?

MunicipalsGovernmentalPrivate surveyingEnergyContractorsQuarrying and miningOthers

Local government

What are SATREF services used for?Navigation

Surveying

Registration

Retrieving

Machine guidance

Flight positioning

Documentation

Crust movementsmonitoring

LongLong term term benefitsbenefits ofof thetheestablishment establishment ofof newnew coordinatecoordinate

systemsystem

The development of technologies for doingprecise measurements has been revolutionizedby the introduction of GPS (future Galileo and Compas)

NGO48 Accuracy does not satisfy therequirements given by the new technology

Deformations and errors were constantlyrevealed by GPS in NGO48, leading to expensive efforts

WhyWhy a a newnew system?system?

Exchange of all types of digital data in a commonhomogenius (seemless) system

Most of European countries have changed or are about to change to a new system based on ETRS89

INSPIRE European regulations for exchange of data in ETRS89

Requests from Geodata partners for seemlesscoordinates

TransportRoad administrationEnergy sectorNorth-sea activities

WhyWhy a a newnew system?system?( ( continuescontinues))

For implementation of high quality GPS basedpositioning systems (Cpos in Norway)

All public maps are in the same datum and projectionsystem (seemless)

EUREF89- accuracy satisfies todays and future needs for all kind of practical surveying

General use of GPS in the society

Need for common navigation system internationally

LegislationLegislation

Norwegian offical coordinates is an open and free of charge system

Sentral archive and maintenance in NMCA

Security of signals and benchmarks regulatedby law

Private activities regulated in contracts

EducationEducation structurestructure in in NorwayNorway

Universities with Bachelor,Master,PhD programsNorwegian University of Life Sciences (UMB)The Norwegian University of Science and Technologi (NTNU)

Other universities with Bachelor,Master and PhDprograms in related disiplines

University of OsloUniversity of BergenUniversity of Tromsø

NMCA is involved with Master and PhD students Part time position at UMB and UIO (20%)Supervisor of Master and PhD studentsPhD studies are financed by scolarship or support from private companies

ThankThank youyou for for payingpaying attentionattention!!BelowBelow a a pointpoint in in thethe nationalnational networknetwork

CorepointCorepoint