IMPLEMENTATION OF THE NEW COORDINATE

SYSTEM IN SLOVENIA

Belgrade, 11th and 12th May 2007

M.Sc. Blaž Mozetič

The Beginning

• EUREF GPS campaigns 94-95-96• New densification networks

established by satellite measurement

EUREF-points

Official EUREF-points

The Milestones

• 2003: acception of Combined EUREF-Slovenia-94/95/96 solution

• 2004: Strategy of the National Geodetic System adopted by the Government of RS

• 2006: Financial donation by Norwegian Financial Mechanism

The Project

• Grant Agreement with Norwegian Financial Mechanism (financial donation)

• Norwegian experts• The SMA is performer of the Project• The financial resources are secured

within the budget of SMA (obligation)

Establishment of the Network of GPS Stations and European Spatial

Reference System in Slovenia

The Objectives

Overall Objectives: to establish a modern national geoinformation infrastructure for to support sustainable development

Purpose: transition to the ESRSResults:• establishment of the national

infrastructure for determining position in ESRS with GPS

• providing conditions for determining position in ESRS with GPS in the entire state territory

• higher quality of spatial data (long-term)

The Activities and Schedule

Three main segments:• Functioning of the state network of

permanent GPS station• Implementation of horizontal

component• Implementation of the vertical

component

Schedule:• 33 months• 23 activities

The ETRS-points

• ETRS-points have coordinates in both systems (measured by SMA)

• 2000 ETRS-points at this moment• Transformation parameters

(different levels)

SiTrasoftware

Transformation parameters

ETRS-ETRS-pointspoints

The Transformation Parameters

• Transformation parameters based on ETRS-points:

1. State level (accuracy 1,0 m)

2. Regional level A, 3 regions (0,5 m)

3. Regional level B, 7 regions (0,3 m)

4. Network level (0,1 m)

• Detail transformation parameters based on local points (not measured by SMA)

The Network of GPS Stations - SIGNAL

Fundamental infrastructure for positioning in the new coordinate system.

SlovenIa-Geodesy-NAvigation-Location

• 15 GPS stations• 1 center of GPS Service• Established end of year 2006• Upgrade of HW and SW

Mobile communications (RTCM)

Web (RINEX)

Real time measurement

Post processing, web site of GPS Service

Data of GPS

Network

Single station

Virtual reference

station

Archives

Data of The Network of GPS Stations

accessibility

European Permanent Network (EPN)

Ljubljana

The Cartographic Projection

• Transverse Mercator Projection• New ellipsoid GRS80• Other parameters are the same

E

N

(0,0)

Existent CSExistent CSNew CSNew CS

State Plane State Plane Coordinate System Coordinate System ETRS89/TMETRS89/TM 500 500

mm400 400 mm

The New Vertical System

• Study of the new vertical system• New tide gauge station

(mareograf Koper)• New high precision levelling network (1900 km) • New gravimetric network

• Decision not yet accepted

The Levelling Network

• Proposal of new high precision levelling network

• Connection of the Slovenian levelling network with neighbouring countries

• 12 EUVN-points (European Vertical Reference Network)

New Levelling Network

The Gravimetic Network

• New gravimetic network• Measurement of relative points in 2006

GRAVIMETRIC NETWORK

AbsoluteRelative

Points:• 6 absolute• 29 relative

The New Concept

• Clasical horizontal geodetic points are not assured by SMA any more

• The new coordinate system is accessible through the Network of GPS Stations

• Only the coordinate system and accuracy of measured points (spatial data) are regulated

The Protocol of Transition

• When and How• SMA duties:

Coordination and leadershipTechnical instruction and

papersLegislation

• Transformation models and transformation parameters

transformation of spatial data

X

Y

N

E

The First Step of Transition

• All updates in Land Cadastre will be determined and will be recorded in the new coordinate system after 1st January 2008.

• The Land Cadastre database will be maintained in the existing (old) and in the new coordinate system.

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M.Sc. Blaž M.Sc. Blaž MozetičMozetičZemljemerska ulica Zemljemerska ulica 1212

SI-1000 LjubljanaSI-1000 Ljubljana

SloveniaSlovenia

blaz.mozetic@gov.siblaz.mozetic@gov.sihttp://http://wwwwww..gu.gu.govgov.si/.si/

Thank You for Your attention.