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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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EUREF89
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