development of permanent gnss stations network in republic of moldova
DESCRIPTION
Technical University of Moldova. Agency for Land Relations and Cadastre (ARLC). Development of permanent GNSS stations Network in Republic of Moldova. Vasile Chiriac. Subjects. Geodetic Infrastructure in Moldova Reference Systems and map projections The National Geodetic Network - PowerPoint PPT PresentationTRANSCRIPT
Development of permanent GNSS stations Network in Republic of
Moldova
Vasile Chiriac
Technical University of Moldova
Agency for Land Relations and Cadastre (ARLC)
Subjects
Geodetic Infrastructure in Moldova• Reference Systems and map projections• The National Geodetic Network• The National Leveling Network• The National Gravity Network
GNSS Network Concept • GNSS Network design• MOLDPOS Architecture• MOLDPOS RTK/VRS Network• Integration with EPN
Conclusions
Geodetic Infrastructure in Moldova
Reference Systems and Map Projections
ETRS 89ETRS 89ETRS 89ETRS 89
ITRS 97ITRS 97ITRS 97ITRS 97
WGS 84WGS 84WGS 84WGS 84
GRS80GRS80GRS80GRS80
SC 42SC 42SC 42SC 42
KrasowskyKrasowskyKrasowskyKrasowsky WGS84WGS84WGS84WGS84
Ellipsoids
Map projections
UTMUTMUTMUTM TMMTMMTMMTMMGauss KrugerGauss KrugerGauss KrugerGauss Kruger Gauss KrugerGauss KrugerGauss KrugerGauss Kruger
MOLDREF991:500 - 1: 10 000
6 zone 1: 25 000 – 1.500 000
6 zone 1: 10 000 – 1.500 000
3 zone 1: 500 – 1:10 000
Vertical reference system:
Baltic Sea 1977
Geodetic Infrastructure in Moldova
The National Geodetic Network
EUREF sites (5)
second-order sites (400)
first-order sites (78)
OTACI
UNGHENI
CHELTUITORUL NOU
PALANCA
GIURGIULESTI
GPS measurements
Geodetic Infrastructure in Moldova 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
Geodetic Infrastructure in Moldova
The National Gravity Network
3 absolute gravity stations (2006) with RMS < 5 Gal
• 17 first order gravity stations (2006) with RMS < 10 Gal
• 112 second order gravity stations (2007-2008) with RMS < 20 Gal
• 271 third order gravity network performed (2008-2009) with RMS < 40 Gal
• 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
GNSS “passive” network (1999-2002)
0 order (EUREF)
2nd order (400 staţions)
1st order (78 stations)
GNSS “active” network (2010-2011)
IGEO
OTACI
UNGHENI
CHELTUITORUL NOU
PALANCA
GIURGIULESTI
0 order (5 EUREF stations)
2nd order (400 staţions)
1st order (78 stations)
Legend
MOLDPOS/RTK GNSS permanent stations
ROMPOS/RTK GNSS permanent stations
MOLDPOS/GEO and ROMPOS/GEO GNSS permanent stations
Legend
GNSS Permanent Network Concept
GNSS Network design
CORS stations
MOLDPOS architecture
Control Center
GPS NAVSTAR/GLONASS
GALILEO
MOLDPOS
Server
Data
Server
Distribution
Post processing
data
FTP/WWW server
Real time applications
GSM router
Raw data
Raw data
Corrections
Corrections
Distribution of real-time data streams through Internet using NTRIP (Network Transport of RTCM by Internet Protocol) format.
Geodetic Data base
GNSS Permanent Network Concept
MOLDPOS functionality
MOLDPOSserver
RTCM server
GSM-modem
GNSS-receiverVRS, FKP, MAC
MOLDPOS dataRTCM
NMEA Position message
NMEA Position message
RTCM
ROVER
Geodetic data base (transformations parameters, map projections, quasigeoid model, etc)
GNSS Permanent Network Concept
Integration with EPN
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
GNSS Permanent Network Concept
• Densification with the ~ 70 km spacing requires that at least 13 permanent operating GNSS stations to be installed in order to provide the differential GNSS for navigation and real time kinematics for surveying
• The Geodetic Data Base to be created for MOLDPOS service to generate and distribute differential corrections, transformation parameters and height anomalies from the national quasigeoid model
• MOLDPOS will be used by a large spectrum of users (geodetic works, cadastral surveying, GIS applications, mapping and boundary marking, etc.)
• MOLDPOS will be the basis of support of scientific applications (landslide and floods monitoring, environmental research, geohazard prediction, meteorology, etc.)
Conclusions
GNSS Permanent Network Concept
Thanks for attention
Contact:
As. Prof. Dr. Vasile ChiriacDepartment of Geodesy, Cadastre
and GeotechnicsTechnical University of Moldova
168, Stefan Cel Mare streetMD 2005 Chisinau
Tel: +373 22 26 10 45Fax: +373 22 26 10 44Mob: +373 69 295 057
Email: [email protected]: www.utm.md
Technical University of Moldova
Agency for Land Relations and Cadastre (ARLC)