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Republika HrvatskaDržavna geodetska uprava

Marinko Bosiljevac, dipl.ing. , Prof.dr.sc. Željko Bačić, dr.sc. Marijan Marjanović

FIG Working Week,3-8 may, 2009 Eilat, Israel

Content of presentation

• Introducing – Croatian terrestrialreferent system - HTRS96

• CROPOS - CROatian POsition System –realisation

• CROPOS – technical characteristics• CROPOS – terms of using the service• Conclusion

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Croatian terrestrial referent system – HTRS96

13 14 15 16 17 18 1942

43

44

45

46

RP020

RP050

RP101

RP1209

RP180

RP182

RP185

RP187

RP188

RP189

RP194

RP196

RP197

RP209

RP210

RP214

RP215

RP222

RP235

RP248RP249

RP258

RP287

RP289

RP294

RP301

RP303

RP316

RP362RP363

RP375

RP384

RP388

RP389

RP391

RP401RP402

RP404

RP5002

RP5003

RP5004

RP5005

RP5008

RP5009

RP5011

RP5013

RP525

RP547

RP579

RP728

RP731

RP733RP733A

RP734

RPG528

RPG601

RPG649

RPG822RPG825

RPG859

RPG872

RPR13

RPR96A

POINTSCroatin

Basic Network

1023II. OrderNetwork

10X10 km

78I. OrderNetwork

Croatian terrestrial referent system – HTRS96

• I. Order Basic Network – CROREF 1994/95/96 GPS Campaigns - 78 points

• II. Order GPS Network – 1997 - 2002 - 1023 points• 2004. - The Goverment of the Republic of Croatia on

proposal of the Geodetic State Administration brought a Decision of the establish a new official geodetic datumsand map projections of the Republic of Croatia

• 2005. - SGA brought Program of implementation of new referent system

• Establishment of GNSS permanent network - CROPOS – the most important tool for its implementation

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Why CROPOS?

• Compared to the present application of theGNSS survey methods, use of CROPOS havethe following advantages– reduction of investment in the required equipment

(for approx. 50%)– reduction in time (at least 50) and human resources

(at least 50%) – during the surveying– while at the same time increasing the accuracy,

reliability and homogeneity of the obtained surveyingresults

– service available 24/7/365

CROPOS – project realisation• 2004. – feasibility study – bilateral cooperation with

German GTZ• 2005. – project adopted for financing trought National

PHARE 2005 Programm• 2006. – finalized network design and tender

documentation• 2007. – international supply tender was conducted and

contract was signed with Trimble Europe • 2008. – delivery and instalation for all GNSS measure

and ITC equipment was done• 09.12.2008. servis CROPOS was run in official and

practical use

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CROPOS – technicalcharacteristics

• 30 permanentstations

• 1 control centre –SGA Zagreb

• Distance betweenstations app. 70 km

• PS located on thebuildings of our cadastral offices

CROPOS – Permanent Stations• Trimble Zephyr

Geodetic -GNSS antennaes

• Trimble NetR5 GNSS receiver

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CROPOS – Control centre• ITC equipment

– HelwetPachard

– Cisco• Trimble GPS

Net Software

Control of System Functioning

• Department of the Basic Fundamental Works are responsible for running, monitoring and maintanance of system

• Trimble GPS RTK software is used forcontinius monitoringof PS

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Independent Control System

• 2 control PS– stimulating users in

the field– Approx. 600

initialisation per day• RTK Mon• Java Servlet• www.cropos.hr

Calculation of PS Coordinates a• Bernese GPS software ver. 5.0• 7 x 24 sata• ITRF2005, 2008.83 (1503)

– 30 GNSS stations– 4 referent IGS points– 8 control IGS points– σ =1.5 mm, σφ = 1 mm, σλ = 1 mm, σh = 3 mm

• ETRF00 (R05) (~ETRF89)

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CONTROL IGS POINTS(EUREF – CROPOS)

-0.003-0.004-0.003CroatiaOSJE-0.001-0.0010.002BelgiumBRUS-0.004-0.004-0.002PollandJOZE-0.005-0.003-0.001Czech RepublicGOPE0.001-0.0010.005NetherlandKOSG-0.004-0.007-0.004HungaryPENC-0.002-0.0020.002GermanyPOTS-0.0010.008-0.002ItalyMEDI

(m)(m)(m)DZDYDXStatePoint

CROPOS - System testing

• Measuring 372 points of basic referentialnetwork evenly dispersed over the country– Accuracy of the coordinates determination– System availabity

• Two indenpendent session in period not lessthan 2 hours - 3x5 sec, 3x30sec, 3x60sec

• Achived accuracy for determining the position is about 1 cm and 2 cm for altitude

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CROPOS services

RINEXRINEX VRS±1 cm (2D, 3D)Internet

(FTP, e-mail)post-processingGPPS

RTCM 2.3RTCM 3.1

±2 cm (2D)±4 cm (3D)

Wireless Internet(GPRS, UMTS)

NTRIP protocolGSM

network solution ofphase surveys in

real timeVPPS

RTCM 2.3±0.3 do ±0.5 m

Wireless Internet(GPRS, UMTS)

NTRIP protocolGSM

network solution ofcoded surveys in

real timeDSP

DATAFORMATACCURACYDATA TRANSFERMETHOD

SOLUTIONSCROPOSservices

CROPOS - terms of using services

• CROPOS services are available only forregistered users– Application form

• Personal details• Type of services and number of licenses• Accept terms of using the services

• User name and password for accesingspecifics service

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CROPOS - Pricelist

HRK 0,501 minute**RINEXRINEX VRSpost-processing

CROPOS - GPPSGeodetic precisionpositioning service

HRK 0,35HRK 5.000

1 minute1 year

RTCM 2.3RTCM 3.10.02 - 0.04 m

CROPOS - VPPS High-precision positioning service

HRK 300***(1€ = 7,4 HRK)

HRK 1.0001 year*RTCM 2.30.3 - 0.5 mCROPOS - DPS Differentialpositioning service

Registration CostsPriceUnitData FormatAccuracyType of service

CROPOS - users

0

20

40

60

80

100

120

140

160

180

200

num

ber o

f use

rs

31.12.2008 31.01.2009 28.2.2009 31.3.2009 29.4.2009

date

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CROPOS – users

0

50

100

150

200

250

number of licences

pro.08 sij.09 vlj.09 ožu.09 tra.09date

DPSVPPS FLATVPPS MINGPPS

CROPOS – system use

0

100000

200000

300000

400000

500000

600000

700000

time

in m

inut

es

31.12.2009. 31.1.2009. 28.2.2009. 31.3.2009. 28.4.2009.date

DPSVPPSGPPS

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CROPOS – system using

0

50000

100000

150000

200000

250000

TIM

E IN

MIN

UTE

S

1.12. – 31.12.2009. 1.1. – 31.1.2009. 1.2. – 28.2.2009. 1.3. – 31.3.2009. 1.4. - 28.4.2009.DATE

DPSVPPSGPPS

Conclusion

• CROPOS is fully functional• Only after 4 months of usage fully

integrated in Croatian surveying society• Pricing model combines cost recovery

(achieved) and fostering economy• Future effort focused on non surveying

users (DGPS service) and improvement(simplification) of transformation issue

• Networking with neibourghing countries

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Thank you for attention!