czech republic and system of permanent station gnss czepos- eng. karel brazdil, phd
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CZECH REPUBLIC AND
SYSTEM OF PERMANENT STATION GNSS CZEPOS
Eng. Karel BRAZDIL, PhD.
LAND SURVEY OFFICE OF THE CZECH REPUBLIC
C Z E C H O F F I C E F O R S U R V E Y I N G ,
M A P P I N G A N D C A D A S T R E
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C Z E C H R E P U B L I C I N E U R O P E
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GEODETIC REFERENCE SYSTEMS OF THE CZECH REPUBLIC
WGS 84 – WORLD GEODETIC SYSTEM – ELLIPSOID WGS 84 – UTM CARTOGRAPHIC PROJECTION - IS USED FOR MILITARY PURPOSES
3 BASIC GEODETIC SYSTEMS IN THE CZECH REPUBLIC ARE USED
ETRS 89 – EUROPEAN TERRESTIAL REFERENCE SYSTEM 89 ELLIPSOID GRS 80 – UTM CARTOGRAPHIC PROJECTION
USED FOR CIVILIAN PURPOSES – BASIC SYSTEM FOR GNSS - CZEPOS
JTSK – UNIFIED TRIGONOMETRIC SYSTEM FOR CADASTRE BESSEL‘S ELLIPSOID – SPECIAL CONIC PROJECTION USED FOR CIVILIAN PURPOSES
EARTH GEOID ELLIPSOID
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CARTOGRAPHIC PROJECTION USED IN THE CZECH REPUBLIC
UNIVERSAL TRANSVERSE MERCATOR (WGS 84)
WGS 84 - ELLIPSOID
KROVAK‘S PROJECTION SPECIAL FOR CZECH REPUBLIC
BESSEL ELLIPSOID
MILITARY TOPOGRAPHIC MAPS 1:25 000, 1:50 000, 1:100 000 AND 1:250 000
STANDARD NATO
CADASTRAL MAPS BASIC MAPS OF THE CZECH REPUBLIC 1:10 000, 1:25 000, 1:50 000, 1:100 000 AND 1:200 000
TRANSFORMATION
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BASIC GEODETIC TRIGONOMETRIC NETWORK
Since 1920 it was build: 73 300 basic trigonometric points (stones) 34 200 associated geodetic points (stones) 119 200 elevation (levelling) points 460 gravimetric points
Current density is about 1.3 points per km2 5
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CZECH STATE LEVELLING NETWORK
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HTTP://BODOVAPOLE.CUZK.CZ
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ETRS REALIZATION IN THE CZECH REPUBLIC
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GEOPORTAL - TRANSFORMATION SERVICES
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GNSS NETWORK OF PERMANENT STATION - CZEPOS
27 GNSS PERMANENT STATION DISTANCE NO MORE THEN 50 km 10
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GNSS NETWORK OF PERMANENT STATION - CZEPOS
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GNSS NETWORK OF PERMANENT STATION - CZEPOS
Receivers: Leica GRX 1200 Pro
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TECHNICAL INFRASTRUCTURE - CZEPOS
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CZEPOS – SERVICES AND PRODUCTS
Real-time services:
– additional information from the reference station for DGPS (differential GPS)
– additional information from the reference station for RTK (real time kinematics)
Post-processing products:
– downloading from CZEPOS web sites
– data files for further processing (RINEX format)
– archiving on data medium (DVD-RAM)
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MONITORING OF STABILITY
PERIODICAL MOVEMENT
SECULAR MOVEMENT
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MONITORING OF ACCURACY
75 testing areas on the territorry of CR including border areas there are 3 testing baselines in each area each baseline is tested from RTKxVRS service
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MONITORING OF AVAILABILITY (97%)
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RECAPITULATION – GEODETIC SERVICES IN CZE
• CZECH LAND SURVEY OFFICE MAINTAIN BASIC GEODETIC
INFORMATION AND OPERATE CZEPOS
• PRIVATE COMPANIES ENSURE GEODETIC WORK AND CADASTRAL
SURVEYING
• CZECH LAND SURVEY OFFICE SUPPORTS PRIVATE COMPANIES BY
BASIC GEODETIC INFORMATION AND BY CZEPOS SERVICES VIA
INTERNET
- 107 500 TRIGONOMETRIC POINTS (1,3 POINTS/ KM2) - 119 200 LEVELLING POINTS (1,4 POINTS/ KM2) - 460 GRAVIMETRIC POINTS
- CONTINUAL CZEPOS SERVICES FOR SURVEYING WITH GNSS
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C Z E C H O F F I C E F O R S U R V E Y I N G ,
M A P P I N G A N D C A D A S T R E
SURVEYING WITH CZEPOS IS CHEAPER
AND SIMPLY WONDERFUL
THANK YOU FOR YOUR
ATTENTION
KAREL BRAZDIL
LAND SURVEY OFFICE
OF THE CZECH REPUBLIC
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