Development of geodetic databases for real time MOLDPOS service
Technical University of
MoldovaAgency for Land Relations
and Cadastre (ARLC)
As. Prof. Dr. Vasile Chiriac
As. Prof. Dr. Livia Nistor
MSc. Andrei Iacovlev
As. Prof. Dr. Vasile Grama Prof. Dr.-Ing. Reiner Jäger
MSc Ghadi Younis
Dipl. Ing. Stephan Seiler
Dipl. Ing. Simone Kälber
Dipl. Ing. Peter Spohn
United Nations/Moldova/United States of America
Workshop on the Applications of Global Navigation Satellite System (GNSS)
Participating institutions
Federal Ministry of Education
and Research of GermanyAcademy of Science
of Moldova (ASM)
Technical
University of
Moldova (TUM)
Agency for Land Relations
and Cadastre (ARLC)
Memorandum of understanding between Academy of Science of Moldova and Federal
Ministry of Education and research of Germany signed on 14 March 2008
Bilateral Research Program to fund 1 year projects: 25 000 EURO from
German site and 10 000 EURO from Moldavian site.
In 2008-2009 the Technical University of Moldova and in collaboration with Karlsruhe
University of Applied Sciences had applied application on Development of a High
Capacity Real-Time GNSS Positioning Service using new RTCM 3.1 transformation
messages that can be integrated in MOLDPOS - Project launched by Agency for Land
Relations and Cadastre (ARLC) funded by Norwegian Government.
The Karlsruhe University of Applied Sciences has been:
• Developing complete infrastructure (transformation parameter concepts,
computation software and technical standards in GNSS-industry in the recent years)
• The scientific member (2003 – 2007) and fully involved into the international RTCM
working group on transformation messages
• The second German partner has been involved as link between state and private
GNSS-services, GNSS-industry and GIS and university into the developments
The Agency of Land Relation and Cadastre has experience in:
• Installation, maintenance and operation of EPN GNSS reference station
• GNSS network measurement and processing
The Technical University of Moldova has experience in:
• Installation, maintenance and operation of EPN GNSS reference station
• GNSS/RTK measurements and processing
• Generation and distribution of differential corrections
Participating institutions
Project objectives • Development of a communication architecture for providing RTCM 3.1
transformation messages
• Development of a general geodetic transformation databases concept
• Analysis and further scientific developments of bilateral approaches for
the Height Reference Surface (HRS) modeling methods and numeric
conversion procedure of ellipsoidal heights into normal heights
• Study of possibilities of Digital Finite Element Height Reference Surface
(DFHRS) concept Implementation in MOLDPOS data-base
• Study of possibilities of concept and software Implementation in
MOLDPOS to monitor permanently the coordinate integrity of the GNSS
reference stations
• Testing out of the final DFHRS and COPAG/ DFLBF databases based on the
Karlsruhe state of the art of the mathematical models
Preconditions for new geodetic infrastructure devel opmentIntroduction of New Reference Systems and Map Project ions
ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89ETRS 89
ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97ITRS 97
WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84WGS 84
GRS80GRS80GRS80GRS80GRS80GRS80GRS80GRS80GRS80GRS80GRS80GRS80
SC 42SC 42SC 42SC 42SC 42SC 42SC 42SC 42SC 42SC 42SC 42SC 42
KrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowskyKrasowsky WGS84WGS84WGS84WGS84WGS84WGS84WGS84WGS84WGS84WGS84WGS84WGS84
Ellipsoids
Map projections
UTMUTMUTMUTMUTMUTMUTMUTMUTMUTMUTMUTM TMMTMMTMMTMMTMMTMMTMMTMMTMMTMMTMMTMMGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss Kruger Gauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss KrugerGauss Kruger
MOLDREF991:500 - 1: 10 000
6°°°° zone1: 25 000 – 1.500 000
6°°°° zone1: 10 000 – 1.500 000
3°°°° zone1: 500 – 1:10 000
Vertical reference systems:
Baltic Sea 1977 - EVRS2000
Development of the National GPS Network
EUREF sites (5)
second-order sites (418)
first-order sites (72)
OTACI
UNGHENI
CHELTUITORULNOU
PALANCA
GIURGIULESTI
GPS measurements (1999-2002)
Preconditions for new geodetic infrastructure devel opment
Reconstruction of the National Leveling Network
4699
231
5128
8138
356
1652
8712
244
4875
3554 L E G E N D
1-st order leveling
2-nd orderleveling
96
336
38
2586
Reconstruction and integration in ULEN•1st polygon (350 km) closed in 2008• 2nd polygon (429 km) performed 202 km in 2009• 3rd polygon (116 km) performed 30 km in 2008• 4th polygon (267 km) to be performed in 2010-2011
1
2 3
4
Preconditions for new geodetic infrastructure devel opment
Development of The National Gravity Network
3 absolute gravity stations (2006) with RMS < 5 µµµµGal
• 17 first order gravity stations (2006) with RMS < 10 µµµµGal
• 112 second order gravity stations (2007-2008) with RMS < 20 µµµµGal
• 271 third order gravity network performed (2008-2009) with RMS < 40 µµµµGal
• 1511 third order gravity network to be performed (2010-2011)
Total: 2012 gravity stations (4x4 km)
Absolute gravity sites
1st order gravity sites
2nd order gravity sites
3rd order gravity sites
Legend:
BRICENI
CHISINAU
GIURGIULESTI
Preconditions for new geodetic infrastructure devel opment
Preconditions for new geodetic infrastructure devel opment
Starting from August 2006 CTIG station
in Technical University of Moldova was
installed in the frame of educational
project JEP-24243-2003, TACIS-TEMPUS
(http://ctig.utm.md/?module=projects&
action=1&project_id=6);
Installation and maintenance of the permanent GNSS reference station in Technical University of Moldova
Preconditions for new geodetic infrastructure devel opment
IGEO Starting from August 2007 the Agency of Land Relations and Cadastre in collaboration with BKG installed and jointly operate a GNSS permanent tracking station IGEO (Chisinau) integrated into EPN and will be integrated in MOLDPOS (www.ingeocad/igeo )
Installation and maintenance of the EPN GNSS reference station
GPS “passive” network (1999-2002) GNSS “active” networ k (2010)
0 order (EUREF)
2nd order(400 sta ţions)
1st order (78 stations)
OTACI
UNGHENI
CHELTUITORULNOU
PALANCA
GIURGIULESTI
0 order (5 EUREF
stations)
2nd order (400 staţions)
1st order (78 stations)
Legend
Decision of GNSS Permanent Network Establishment
Preconditions for new geodetic infrastructure devel opment
CORS stations
Geodetic databases development
Control Center
GPS NAVSTAR/GLONASS
GALILEO
MOLDPOS
Server
RTCM
Server
Distribution
Post processing
data
FTP/WWW server
Real time applications
GSM router
Raw data
Raw data
RTCM messages
Geodetic Data bases
COPAG DFLBF DFHRS
x,y (SC-42) -> x,y (MOLDREF99) x,y (MOLDREF99 -> x,y (SC-42) h (GNSS) -> H (norm)
Communication architecture for providing RTCM 3.1 transformation messagesMOLDPOSserver
RTCM server
GSM-modem
MOLDPOSdata
RTCM 3.1
NMEA Position message
NMEA Position message
RTCM 3.1
Geodetic data base (transformations parameters, map projections, quasigeoid model, etc)
Monitoring by the Karlsruhe approach (MONIKA) servic e
Testing out of geodetic databases
Absolute gravity sites
1st order gravity sites
2nd order gravity sites
3rd order gravity sites
GPS/leveling
Legend:
BRICENI
CHISINAU
GIURGIULESTI
•Computation of quasigeoidmodel and HRS for testing zone using gravity and GPS/leveling measurements
•2D Transformation parameters computation using GNSS measurements on the old network SC-42
•Generation of RTCM 3.1 transformation messages and testing the accuracy of RTK measurements using existing permanent GNSS stations
•Testing of MONIKA software on the planned MOLDPOS permanent GNSS stations
• The new RTCM 3.1 transformation messages allows the GN SS service to provide their users with all necessary inf ormation for 2D positioning and GNSS-based height computation rel ated to the national HRS
• Improvement of normal height determination accuracy from GNSS measurements and organizing the MOLDPOS service to generate and distribute differential corrections and he ight anomalies generated from the high precision quasigeoid model
• Transformation Parameters data bases can be used by a l arge spectrum of users (geodetic works, cadastral surveying , GIS applications, mapping and boundary marking, etc.)
• MONIKA Monitoring system can be the basis of support of scientific applications (landslide and floods monit oring, environmental research, geohazard prediction, geodynamic investigations etc.)
Conclusions
Thank you for attention
United Nations/Moldova/United States of America
Workshop on the Applications of Global Navigation Satellite System (GNSS)
Technical University of
MoldovaAgency for Land Relations
and Cadastre (ARLC)