Title: REFLECTION OF NEW GEODETIC DATUM AND MAP PROJECTION INTRODUCTION ON ORTHOPHOTO PRODUCTION PROCESS
1REFLECTION OF NEW GEODETIC DATUM AND MAP
PROJECTION INTRODUCTION ON ORTHOPHOTO PRODUCTION
PROCESS
Sinia Hofer, Ivana imat, Ljerka
Raic Department of Photogrammetry and Remote
Sensing, State Geodetic Administration,
Lastovska 23, Zagreb, CROATIA e-mail
sinisa.hofer_at_dgu.hr, ivana.simat_at_dgu.hr,
ljerka.rasic_at_dgu.hr
2Introduction - NSDI
- Law on State Survey and the Real Estate Cadastre
in 2007 - One of the main spatial data for establishment of
NSDI is digital orthophoto in the scale 1 5000
(DOP5) - Production of 5400 DOP5 sheets within Land Parcel
Identification System (LPIS) project
3Historical geodetic datum and cartographic map
projection
- Bessel ellipsoid
- Gauss-Krüger conform transverse cylindrical
projection of 3 degree meridian zone - 2 zones 15ºE and 18ºE mean meridian
- Trigonometric sections 22,515 km
4Comparison of DOP5 production
Till 2008
Nowdays
transformation
5- Discordance between 2 neighboring DOP5 sheets due
to inhomogeneous CSCS
6New geodetic datum and map projection
- ETRS89 GRS80 ellipsoid
- Transverse Mercator projection
- 1 coordinate system mean meridian 1630E
- Linear scale on mean meridian 0,9999
- x, y ? N, E (ISO 19111)
7New sheet division
- Section dimensions 600600 km
- 125000 ? 1015 km
- ? 1 5000
- 32 km
- DOP5 sheet dimensions 7050 cm
- 10981 DOP5 sheets covering Croatian territory
8Conclusion
- 2004 - Decision on the Establishment of Official
Geodetic Datum and Planar Map Projections of the
Republic of Croatia - New geodetic reference system will satisfy
scientific, technological and economical national
international needs of Croatia on her way to EU - SGA recognized LPIS project as opportunity to
start production of DOP5 in new reference system - OUTCOMES homogenous spatial data
- FURTHER CHALLANGE transformation of former
background into new datum, with the accent on DTM
data
9Thank you for your attention !