TY - GEN
T1 - Analyses of Latvian national geodetic reference system
AU - Liepins, Ivars
AU - Kalinka, Maris
N1 - Publisher Copyright:
© 2017 Ivars Liepins, Maris Kalinka. Published by VGTU Press. This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY-NC 4.0) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2017
Y1 - 2017
N2 - National geodetic reference system is base for geodetic and geospatial data and information obtaining, maintenance and distribution in common reference system in country. It means, that it must be as accurate as possible and lockstep with time. Latvian national geodetic reference system (LNGRS) derives from Soviet Union geodetic reference system at beginning of 90-ties last century. Development of LNGRS was done as historical continuation of practice to use height, coordinates, Earth gravitational and geomagnetic systems and national networks. For coordinates was established new Latvian geodetical coordinate system using one week campaign data of GPS NAVSTAR. Heights were kept in Baltic normal height system epoch 1977. Earth gravitational system was established newly by absolute gravimetric measurements. Geomagnetic system was developed as repeat station system. Earth is constantly change system internally and outwardly More growing use of GIS and GNSS in agriculture, construction, logistic, military and everyday life put new challenge for LNGRS and it reliability to actual situation in top level. Main goal of publication is to analyse all aspects of LNGRS against nowadays criteria and requirements of dynamic national geodetic reference system. Results of analyses show feeble and powerful sides of LNGRS.
AB - National geodetic reference system is base for geodetic and geospatial data and information obtaining, maintenance and distribution in common reference system in country. It means, that it must be as accurate as possible and lockstep with time. Latvian national geodetic reference system (LNGRS) derives from Soviet Union geodetic reference system at beginning of 90-ties last century. Development of LNGRS was done as historical continuation of practice to use height, coordinates, Earth gravitational and geomagnetic systems and national networks. For coordinates was established new Latvian geodetical coordinate system using one week campaign data of GPS NAVSTAR. Heights were kept in Baltic normal height system epoch 1977. Earth gravitational system was established newly by absolute gravimetric measurements. Geomagnetic system was developed as repeat station system. Earth is constantly change system internally and outwardly More growing use of GIS and GNSS in agriculture, construction, logistic, military and everyday life put new challenge for LNGRS and it reliability to actual situation in top level. Main goal of publication is to analyse all aspects of LNGRS against nowadays criteria and requirements of dynamic national geodetic reference system. Results of analyses show feeble and powerful sides of LNGRS.
KW - Management
KW - National geodetic references system definition
KW - Realization
UR - https://www.scopus.com/pages/publications/85061827467
U2 - 10.3846/enviro.2017.215
DO - 10.3846/enviro.2017.215
M3 - Conference paper
AN - SCOPUS:85061827467
T3 - 10th International Conference on Environmental Engineering, ICEE 2017
BT - 10th International Conference on Environmental Engineering, ICEE 2017
A2 - Vaiskunaite, Rasa
A2 - Cygas, Donatas
PB - Vilnius Gediminas Technical University Publishing House "Technika"
T2 - 10th International Conference on Environmental Engineering, ICEE 2017
Y2 - 27 April 2017 through 28 April 2017
ER -