TY  - CONF
AU  - Odalović, Oleg
AU  - Joksimović, Danilo
AU  - Petković, Dušan
AU  - Stanković, Marko
AU  - Grekulović, Sanja
PY  - 2020
UR  - https://stepgrad.aggf.unibl.org/sr
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2006
AB  - Within this paper, we evaluated the quality of three Global Geopotential Models entitled: EGM96,
EGM2008, and GOCO05c. The models were evaluated by using 1001 terrestrial discrete values of height anomalies determined by Global Navigation Satellite Systems and normal heights, which we considered to be true values within this research. In addition to the quality evaluation, we tailored the models by using more than 80000 free air anomalies. The results obtained from the evaluation and tailoring indicate that by using the GOCO05c it is possible to determine a set of anomaly heights across Serbia, which are in agreement with terrestrial values with an average value of -7 cm, the standard deviation of ±9 cm and with the range of 44 cm.
AB  - У оквиру рада оцењен је квалитет три глобална гепотенцијална модела: EGM96, EGM2008 и GOCO05s. Квалитет модела је тестиран коришћењем 1001 условно тачних вредности
дискретних вредности аномалија висина које су претходно одређене применом (комбиновањем) Глобалних навигационих сателитских система и нормалних висина. Поред
наведеног, модели су и прилагођени територији Србије коришћењем више од 80000 аномалија слободног ваздуха. Резултати добијени из наведених одређивања указују да се
применом модела GOCO05c могу одредити аномалије висина на територији Србије које
апроксимирају терестрички одређене аномалије висина са средњом вредношћу од -7 cm,
стандардном девијацијом од ±9 cm и то у оквиру распона од 44 cm.
C3  - Међународна научна конференција ''Савремена теорија и пракса у градитељству XIV”
T1  - Evaluation and tailoring of global geopotential models in the determination of gravity field in Serbia
T1  - Оцена и тејлоровање глобалних геопотенцијалних модела при одређивању гравитационог поља на територији Србије
EP  - 90
SP  - 77
DO  - 10.7251/STP2014077O
ER  - 

@conference{
author = "Odalović, Oleg and Joksimović, Danilo and Petković, Dušan and Stanković, Marko and Grekulović, Sanja",
year = "2020",
abstract = "Within this paper, we evaluated the quality of three Global Geopotential Models entitled: EGM96,
EGM2008, and GOCO05c. The models were evaluated by using 1001 terrestrial discrete values of height anomalies determined by Global Navigation Satellite Systems and normal heights, which we considered to be true values within this research. In addition to the quality evaluation, we tailored the models by using more than 80000 free air anomalies. The results obtained from the evaluation and tailoring indicate that by using the GOCO05c it is possible to determine a set of anomaly heights across Serbia, which are in agreement with terrestrial values with an average value of -7 cm, the standard deviation of ±9 cm and with the range of 44 cm., У оквиру рада оцењен је квалитет три глобална гепотенцијална модела: EGM96, EGM2008 и GOCO05s. Квалитет модела је тестиран коришћењем 1001 условно тачних вредности
дискретних вредности аномалија висина које су претходно одређене применом (комбиновањем) Глобалних навигационих сателитских система и нормалних висина. Поред
наведеног, модели су и прилагођени територији Србије коришћењем више од 80000 аномалија слободног ваздуха. Резултати добијени из наведених одређивања указују да се
применом модела GOCO05c могу одредити аномалије висина на територији Србије које
апроксимирају терестрички одређене аномалије висина са средњом вредношћу од -7 cm,
стандардном девијацијом од ±9 cm и то у оквиру распона од 44 cm.",
journal = "Међународна научна конференција ''Савремена теорија и пракса у градитељству XIV”",
title = "Evaluation and tailoring of global geopotential models in the determination of gravity field in Serbia, Оцена и тејлоровање глобалних геопотенцијалних модела при одређивању гравитационог поља на територији Србије",
pages = "90-77",
doi = "10.7251/STP2014077O"
}

Odalović, O., Joksimović, D., Petković, D., Stanković, M.,& Grekulović, S.. (2020). Evaluation and tailoring of global geopotential models in the determination of gravity field in Serbia. in Међународна научна конференција ''Савремена теорија и пракса у градитељству XIV”, 77-90.
https://doi.org/10.7251/STP2014077O

Odalović O, Joksimović D, Petković D, Stanković M, Grekulović S. Evaluation and tailoring of global geopotential models in the determination of gravity field in Serbia. in Међународна научна конференција ''Савремена теорија и пракса у градитељству XIV”. 2020;:77-90.
doi:10.7251/STP2014077O .

Odalović, Oleg, Joksimović, Danilo, Petković, Dušan, Stanković, Marko, Grekulović, Sanja, "Evaluation and tailoring of global geopotential models in the determination of gravity field in Serbia" in Међународна научна конференција ''Савремена теорија и пракса у градитељству XIV” (2020):77-90,
https://doi.org/10.7251/STP2014077O . .

TY  - CONF
AU  - Marković, Miloš
AU  - Stanković, Marko
AU  - Odalović, Oleg
AU  - Joksimović, Danilo
AU  - Petković, Dušan
PY  - 2019
UR  - https://www.sgem.org/index.php/elibrary?view=publication&task=show&id=5478
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1769
AB  - This paper presents the combined method of determining the deflection of vertical components ? and ? based on the precise levelling and GNSS measurements. In general, there are several methods, but the combined method simplifies data collecting and subsequent processing of results in comparison with other methods. Components determination was performed on the high precision levelling network in Serbia, by calculating undulation on each point, so as azimuth and length for each side of the network starting from reference point. The length of sides is in the range of 20 km to 300 km. A point approximately located in the middle of the network was chosen as a reference point. By applying least-squares method, the estimated values of the components were obtained. In addition to the statistical evaluation of the deflection of vertical components, the paper shows a comparison of the obtained values with the values from the global Geopotential models, which justifies using the combined method for networks of similar design.
C3  - 19th International Multidisciplinary Scientific GeoConference SGEM 2019
T1  - ESTIMATION OF THE DEFLECTION OF VERTICAL COMPONENTS USING PRECISE LEVELLING AND GNSS MEASUREMENTS ON HIGH PRECISION LEVELLING NETWORK OF SERBIA
IS  - 2.2
VL  - 19
DO  - 10.5593/sgem2019/2.2/S09.014
ER  - 

@conference{
author = "Marković, Miloš and Stanković, Marko and Odalović, Oleg and Joksimović, Danilo and Petković, Dušan",
year = "2019",
abstract = "This paper presents the combined method of determining the deflection of vertical components ? and ? based on the precise levelling and GNSS measurements. In general, there are several methods, but the combined method simplifies data collecting and subsequent processing of results in comparison with other methods. Components determination was performed on the high precision levelling network in Serbia, by calculating undulation on each point, so as azimuth and length for each side of the network starting from reference point. The length of sides is in the range of 20 km to 300 km. A point approximately located in the middle of the network was chosen as a reference point. By applying least-squares method, the estimated values of the components were obtained. In addition to the statistical evaluation of the deflection of vertical components, the paper shows a comparison of the obtained values with the values from the global Geopotential models, which justifies using the combined method for networks of similar design.",
journal = "19th International Multidisciplinary Scientific GeoConference SGEM 2019",
title = "ESTIMATION OF THE DEFLECTION OF VERTICAL COMPONENTS USING PRECISE LEVELLING AND GNSS MEASUREMENTS ON HIGH PRECISION LEVELLING NETWORK OF SERBIA",
number = "2.2",
volume = "19",
doi = "10.5593/sgem2019/2.2/S09.014"
}

Marković, M., Stanković, M., Odalović, O., Joksimović, D.,& Petković, D.. (2019). ESTIMATION OF THE DEFLECTION OF VERTICAL COMPONENTS USING PRECISE LEVELLING AND GNSS MEASUREMENTS ON HIGH PRECISION LEVELLING NETWORK OF SERBIA. in 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 19(2.2).
https://doi.org/10.5593/sgem2019/2.2/S09.014

Marković M, Stanković M, Odalović O, Joksimović D, Petković D. ESTIMATION OF THE DEFLECTION OF VERTICAL COMPONENTS USING PRECISE LEVELLING AND GNSS MEASUREMENTS ON HIGH PRECISION LEVELLING NETWORK OF SERBIA. in 19th International Multidisciplinary Scientific GeoConference SGEM 2019. 2019;19(2.2).
doi:10.5593/sgem2019/2.2/S09.014 .

Marković, Miloš, Stanković, Marko, Odalović, Oleg, Joksimović, Danilo, Petković, Dušan, "ESTIMATION OF THE DEFLECTION OF VERTICAL COMPONENTS USING PRECISE LEVELLING AND GNSS MEASUREMENTS ON HIGH PRECISION LEVELLING NETWORK OF SERBIA" in 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 19, no. 2.2 (2019),
https://doi.org/10.5593/sgem2019/2.2/S09.014 . .

TY  - CONF
AU  - Joksimović, Danilo
AU  - Stanković, Marko
AU  - Marković, Miloš
AU  - Petković, Dušan
AU  - Odalović, Oleg
PY  - 2019
UR  - https://www.sgem.org/index.php/elibrary-research-areas?view=publication&task=show&id=5484
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1768
AB  - This paperwork is dedicated to the research of the quality of height anomalies derived from the Global Geopotential Models GOCO over the Serbia territory. Three different types of approaches for the same model were considered: time wise, space wise and direct approach. The quality of the mentioned models is determined by comparison with terrestrial data of height anomalies, that are relate to the second high precision leveling network of the Republic of Serbia (the period of realization of tide gauges observations for determining the vertical position of the reference surface of the height reference system of the Republic of Serbia is 1971.0 years) and European Terrestrial Reference System 1989, realization ETRF2000, epoch 2010.63. By direct comparison, it was established that all models give almost identical data on the territory of Serbia and that with the application of the model one can approximate height anomalies at the territory of Serbia with a mean value of maximum 7 cm and with a standard deviation of 20 cm. Besides of this, models are compared in their spectral domains, with each other and with the model EGM2008, by comparison their degree and error degree variances.
C3  - International Multidisciplinary Scientific GeoConference-SGEM
T1  - Height anomalies determined by three different GOCO models
IS  - 2.2
VL  - 19
DO  - 10.5593/sgem2019/2.2/S09.020
ER  - 

@conference{
author = "Joksimović, Danilo and Stanković, Marko and Marković, Miloš and Petković, Dušan and Odalović, Oleg",
year = "2019",
abstract = "This paperwork is dedicated to the research of the quality of height anomalies derived from the Global Geopotential Models GOCO over the Serbia territory. Three different types of approaches for the same model were considered: time wise, space wise and direct approach. The quality of the mentioned models is determined by comparison with terrestrial data of height anomalies, that are relate to the second high precision leveling network of the Republic of Serbia (the period of realization of tide gauges observations for determining the vertical position of the reference surface of the height reference system of the Republic of Serbia is 1971.0 years) and European Terrestrial Reference System 1989, realization ETRF2000, epoch 2010.63. By direct comparison, it was established that all models give almost identical data on the territory of Serbia and that with the application of the model one can approximate height anomalies at the territory of Serbia with a mean value of maximum 7 cm and with a standard deviation of 20 cm. Besides of this, models are compared in their spectral domains, with each other and with the model EGM2008, by comparison their degree and error degree variances.",
journal = "International Multidisciplinary Scientific GeoConference-SGEM",
title = "Height anomalies determined by three different GOCO models",
number = "2.2",
volume = "19",
doi = "10.5593/sgem2019/2.2/S09.020"
}

Joksimović, D., Stanković, M., Marković, M., Petković, D.,& Odalović, O.. (2019). Height anomalies determined by three different GOCO models. in International Multidisciplinary Scientific GeoConference-SGEM, 19(2.2).
https://doi.org/10.5593/sgem2019/2.2/S09.020

Joksimović D, Stanković M, Marković M, Petković D, Odalović O. Height anomalies determined by three different GOCO models. in International Multidisciplinary Scientific GeoConference-SGEM. 2019;19(2.2).
doi:10.5593/sgem2019/2.2/S09.020 .

Joksimović, Danilo, Stanković, Marko, Marković, Miloš, Petković, Dušan, Odalović, Oleg, "Height anomalies determined by three different GOCO models" in International Multidisciplinary Scientific GeoConference-SGEM, 19, no. 2.2 (2019),
https://doi.org/10.5593/sgem2019/2.2/S09.020 . .

TY  - JOUR
AU  - Odalović, Oleg
AU  - Todorović-Drakul, Miljana
AU  - Grekulović, Sanja
AU  - Popović, Jovan
AU  - Joksimović, Danilo
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/930
AB  - In this paper, the development of geodetic reference networks in Serbia is shown. This historical summary covers the time from the first organised work in 1855 until today. Special attention has been paid to the establishment of the modern network using Global Navigation Satellite Systems (GNSS). Within the networks established by GNSS, two last realised networks are especially distinguished. The first one is a classic spatial reference network SREF (Serbian Reference Frame) established in 2003, and the second one is a permanent stations network - AGROS (Active Geodetic Reference Network of Serbia) realised in 2006.
PB  - Taylor and Francis Ltd.
T2  - Survey Review
T1  - Chronology of the development of geodetic reference networks in Serbia
EP  - 173
IS  - 359
SP  - 163
VL  - 50
DO  - 10.1080/00396265.2016.1249998
ER  - 

@article{
author = "Odalović, Oleg and Todorović-Drakul, Miljana and Grekulović, Sanja and Popović, Jovan and Joksimović, Danilo",
year = "2018",
abstract = "In this paper, the development of geodetic reference networks in Serbia is shown. This historical summary covers the time from the first organised work in 1855 until today. Special attention has been paid to the establishment of the modern network using Global Navigation Satellite Systems (GNSS). Within the networks established by GNSS, two last realised networks are especially distinguished. The first one is a classic spatial reference network SREF (Serbian Reference Frame) established in 2003, and the second one is a permanent stations network - AGROS (Active Geodetic Reference Network of Serbia) realised in 2006.",
publisher = "Taylor and Francis Ltd.",
journal = "Survey Review",
title = "Chronology of the development of geodetic reference networks in Serbia",
pages = "173-163",
number = "359",
volume = "50",
doi = "10.1080/00396265.2016.1249998"
}

Odalović, O., Todorović-Drakul, M., Grekulović, S., Popović, J.,& Joksimović, D.. (2018). Chronology of the development of geodetic reference networks in Serbia. in Survey Review
Taylor and Francis Ltd.., 50(359), 163-173.
https://doi.org/10.1080/00396265.2016.1249998

Odalović O, Todorović-Drakul M, Grekulović S, Popović J, Joksimović D. Chronology of the development of geodetic reference networks in Serbia. in Survey Review. 2018;50(359):163-173.
doi:10.1080/00396265.2016.1249998 .

Odalović, Oleg, Todorović-Drakul, Miljana, Grekulović, Sanja, Popović, Jovan, Joksimović, Danilo, "Chronology of the development of geodetic reference networks in Serbia" in Survey Review, 50, no. 359 (2018):163-173,
https://doi.org/10.1080/00396265.2016.1249998 . .

TY  - JOUR
AU  - Odalović, Oleg
AU  - Grekulović, Sanja
AU  - Starcević, Miroslav
AU  - Nikolić, Dobrica
AU  - Todorović-Drakul, Miljana
AU  - Joksimović, Danilo
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/961
AB  - This paper presents the determination of terrain correction by the means of the Digital Density Model (DDM) of topographic masses (Earth's crust mass above the geoid) for the territory of Serbia. The DDM is determined using the Digital Terrain Model (DTM) with the resolution of 30 m, basic geological map of Serbia, and a set of hypotheses on the density of the Earth's crust masses. The assumption that the general lithosphere density over the territory of Serbia ranges between 2200 kg/m(3) and 2800 kg/m(3) was adopted. Terrain correction is determined at 5765 points, with relatively uniform distribution over the territory of Serbia. The calculations had also included comparing the values obtained therein to the terrain corrections obtained when accepting the hypothesis of constant lithosphere density of 2670 kg/m(3) . Results of comparison highlight that the differences of terrain correction values ranging from -1.31 mGal to 0.73 mGal, along with 98 % of differences falling within the range of +/- 0.2 mGal.
PB  - Zvava Geodetov Slovenije
T2  - Geodetski vestnik
T1  - Terrain correction computations using digital density model of topographic masses
EP  - 97
IS  - 1
SP  - 79
VL  - 62
DO  - 10.15292/geodetski-vestnik.2018.01.79-97
ER  - 

@article{
author = "Odalović, Oleg and Grekulović, Sanja and Starcević, Miroslav and Nikolić, Dobrica and Todorović-Drakul, Miljana and Joksimović, Danilo",
year = "2018",
abstract = "This paper presents the determination of terrain correction by the means of the Digital Density Model (DDM) of topographic masses (Earth's crust mass above the geoid) for the territory of Serbia. The DDM is determined using the Digital Terrain Model (DTM) with the resolution of 30 m, basic geological map of Serbia, and a set of hypotheses on the density of the Earth's crust masses. The assumption that the general lithosphere density over the territory of Serbia ranges between 2200 kg/m(3) and 2800 kg/m(3) was adopted. Terrain correction is determined at 5765 points, with relatively uniform distribution over the territory of Serbia. The calculations had also included comparing the values obtained therein to the terrain corrections obtained when accepting the hypothesis of constant lithosphere density of 2670 kg/m(3) . Results of comparison highlight that the differences of terrain correction values ranging from -1.31 mGal to 0.73 mGal, along with 98 % of differences falling within the range of +/- 0.2 mGal.",
publisher = "Zvava Geodetov Slovenije",
journal = "Geodetski vestnik",
title = "Terrain correction computations using digital density model of topographic masses",
pages = "97-79",
number = "1",
volume = "62",
doi = "10.15292/geodetski-vestnik.2018.01.79-97"
}

Odalović, O., Grekulović, S., Starcević, M., Nikolić, D., Todorović-Drakul, M.,& Joksimović, D.. (2018). Terrain correction computations using digital density model of topographic masses. in Geodetski vestnik
Zvava Geodetov Slovenije., 62(1), 79-97.
https://doi.org/10.15292/geodetski-vestnik.2018.01.79-97

Odalović O, Grekulović S, Starcević M, Nikolić D, Todorović-Drakul M, Joksimović D. Terrain correction computations using digital density model of topographic masses. in Geodetski vestnik. 2018;62(1):79-97.
doi:10.15292/geodetski-vestnik.2018.01.79-97 .

Odalović, Oleg, Grekulović, Sanja, Starcević, Miroslav, Nikolić, Dobrica, Todorović-Drakul, Miljana, Joksimović, Danilo, "Terrain correction computations using digital density model of topographic masses" in Geodetski vestnik, 62, no. 1 (2018):79-97,
https://doi.org/10.15292/geodetski-vestnik.2018.01.79-97 . .

TY  - JOUR
AU  - Odalović, Oleg
AU  - Stanković, Marko D.
AU  - Grekulović, Sanja
AU  - Joksimović, Danilo
AU  - Todorović-Drakul, Miljana
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/924
AB  - This paper presents the determination of the vertical deflection components using the Global Geopotential Model EGM2008. The components are defined in two groups of points: 4083 points are relatively correctly distributed across the territory of Serbia and 46 Laplas and geoid points defined in Serbia in the past century, from the set of institutions. All presented determinations in this paper are related to the Geodetic Reference System 1980 (GRS80), with the coordinates of all the points used to refer to the International Terrestrial Frame 1996 (ITRF96). Analysis of the results of the determination showed that the EGM2008 can be used to approximate the astrogeodetic determination with the agreement of several arc seconds.
AB  - U okviru rada prikazano je određivanje komponenti odstupanja vertikala primenom Globalnog geopotencijalnog modela EGM2008 (Earth Gravitational Model 2008). Komponente su određene u dve grupe tačaka: 4083 tačke relativno pravilno raspoređene po teritoriji Srbije i 46 Laplasovih i geoidnih tačaka koje su određene u Srbiji u prošlom veku, od stane niza institucija. Sva prikazana određivanja u okviru rada odnose se na Geodetski referentni sistem 1980 (Geodetic Reference System 1980 - GRS80), pri čemu se koordinate svih korišćenih tačaka odnose na Međunarodni referentni okvir za epohu 1996 (International Terestrial Frame 1996 - ITRF96). Analizom rezultata određivanja pokazano je da se EGM2008 može koristiti za aproksimaciju astrogeodetskih određivanja sa saglasnošću od nekoliko lučnih sekundi.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Determination of deflection of the vertical components by using global geopotential model EGM2008
T1  - Određivanje komponenti odstupanja vertikale primenom globalnog geopotencijalnog modela EGM2008
EP  - 338
IS  - 3
SP  - 333
VL  - 73
DO  - 10.5937/tehnika1803333O
ER  - 

@article{
author = "Odalović, Oleg and Stanković, Marko D. and Grekulović, Sanja and Joksimović, Danilo and Todorović-Drakul, Miljana",
year = "2018",
abstract = "This paper presents the determination of the vertical deflection components using the Global Geopotential Model EGM2008. The components are defined in two groups of points: 4083 points are relatively correctly distributed across the territory of Serbia and 46 Laplas and geoid points defined in Serbia in the past century, from the set of institutions. All presented determinations in this paper are related to the Geodetic Reference System 1980 (GRS80), with the coordinates of all the points used to refer to the International Terrestrial Frame 1996 (ITRF96). Analysis of the results of the determination showed that the EGM2008 can be used to approximate the astrogeodetic determination with the agreement of several arc seconds., U okviru rada prikazano je određivanje komponenti odstupanja vertikala primenom Globalnog geopotencijalnog modela EGM2008 (Earth Gravitational Model 2008). Komponente su određene u dve grupe tačaka: 4083 tačke relativno pravilno raspoređene po teritoriji Srbije i 46 Laplasovih i geoidnih tačaka koje su određene u Srbiji u prošlom veku, od stane niza institucija. Sva prikazana određivanja u okviru rada odnose se na Geodetski referentni sistem 1980 (Geodetic Reference System 1980 - GRS80), pri čemu se koordinate svih korišćenih tačaka odnose na Međunarodni referentni okvir za epohu 1996 (International Terestrial Frame 1996 - ITRF96). Analizom rezultata određivanja pokazano je da se EGM2008 može koristiti za aproksimaciju astrogeodetskih određivanja sa saglasnošću od nekoliko lučnih sekundi.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Determination of deflection of the vertical components by using global geopotential model EGM2008, Određivanje komponenti odstupanja vertikale primenom globalnog geopotencijalnog modela EGM2008",
pages = "338-333",
number = "3",
volume = "73",
doi = "10.5937/tehnika1803333O"
}

Odalović, O., Stanković, M. D., Grekulović, S., Joksimović, D.,& Todorović-Drakul, M.. (2018). Determination of deflection of the vertical components by using global geopotential model EGM2008. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(3), 333-338.
https://doi.org/10.5937/tehnika1803333O

Odalović O, Stanković MD, Grekulović S, Joksimović D, Todorović-Drakul M. Determination of deflection of the vertical components by using global geopotential model EGM2008. in Tehnika. 2018;73(3):333-338.
doi:10.5937/tehnika1803333O .

Odalović, Oleg, Stanković, Marko D., Grekulović, Sanja, Joksimović, Danilo, Todorović-Drakul, Miljana, "Determination of deflection of the vertical components by using global geopotential model EGM2008" in Tehnika, 73, no. 3 (2018):333-338,
https://doi.org/10.5937/tehnika1803333O . .

TY  - JOUR
AU  - Blagojević, Dragan
AU  - Todorović-Drakul, Miljana
AU  - Odalović, Oleg
AU  - Grekulović, Sanja
AU  - Popović, Jovan
AU  - Joksimović, Danilo
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/804
AB  - To understand general ionosphere properties over Serbia, an analysis of temporal and spatial ionosphere Total Electron Content (TEC) over the region was performed. The present research focuses on daily, seasonal and spatial ionosphere variations, based on TEC series calculated from the GNSS ie. GPS measurements. This analysis provides for characterization of ionosphere nature and fine structure over Serbia, both locally and regionally. For the days with high solar activity changes of TEC values ranges from minimum 4 Total Electron Content Units (TECU), in night hours, up to 55 TECU around the noon. It is shown that that changes are equivalent to the to the delay of GPS signals approximately 8.8 m in in vertical direction during the (maximum) daily conditions and the delay of 0.6 m during the (minimum) night conditions. Also, it is shows that a seasonal TEC differences follows directly Son activity during the seasons, and maximal differences of TEC values between the seasons reaching values of 45 TECU, again in the years of high Son's activities. For spatial changes all gained results indicate that there exist changes in all directions which cannot be recognized as constant bias or a trend.
PB  - Zvava Geodetov Slovenije
T2  - Geodetski vestnik
T1  - Variations of total electron content over Serbia during the increased solar activity period in 2013 and 2014
EP  - 744
IS  - 4
SP  - 734
VL  - 60
DO  - 10.15292/geodetski-vestnik.2016.04.734-744
ER  - 

@article{
author = "Blagojević, Dragan and Todorović-Drakul, Miljana and Odalović, Oleg and Grekulović, Sanja and Popović, Jovan and Joksimović, Danilo",
year = "2016",
abstract = "To understand general ionosphere properties over Serbia, an analysis of temporal and spatial ionosphere Total Electron Content (TEC) over the region was performed. The present research focuses on daily, seasonal and spatial ionosphere variations, based on TEC series calculated from the GNSS ie. GPS measurements. This analysis provides for characterization of ionosphere nature and fine structure over Serbia, both locally and regionally. For the days with high solar activity changes of TEC values ranges from minimum 4 Total Electron Content Units (TECU), in night hours, up to 55 TECU around the noon. It is shown that that changes are equivalent to the to the delay of GPS signals approximately 8.8 m in in vertical direction during the (maximum) daily conditions and the delay of 0.6 m during the (minimum) night conditions. Also, it is shows that a seasonal TEC differences follows directly Son activity during the seasons, and maximal differences of TEC values between the seasons reaching values of 45 TECU, again in the years of high Son's activities. For spatial changes all gained results indicate that there exist changes in all directions which cannot be recognized as constant bias or a trend.",
publisher = "Zvava Geodetov Slovenije",
journal = "Geodetski vestnik",
title = "Variations of total electron content over Serbia during the increased solar activity period in 2013 and 2014",
pages = "744-734",
number = "4",
volume = "60",
doi = "10.15292/geodetski-vestnik.2016.04.734-744"
}

Blagojević, D., Todorović-Drakul, M., Odalović, O., Grekulović, S., Popović, J.,& Joksimović, D.. (2016). Variations of total electron content over Serbia during the increased solar activity period in 2013 and 2014. in Geodetski vestnik
Zvava Geodetov Slovenije., 60(4), 734-744.
https://doi.org/10.15292/geodetski-vestnik.2016.04.734-744

Blagojević D, Todorović-Drakul M, Odalović O, Grekulović S, Popović J, Joksimović D. Variations of total electron content over Serbia during the increased solar activity period in 2013 and 2014. in Geodetski vestnik. 2016;60(4):734-744.
doi:10.15292/geodetski-vestnik.2016.04.734-744 .

Blagojević, Dragan, Todorović-Drakul, Miljana, Odalović, Oleg, Grekulović, Sanja, Popović, Jovan, Joksimović, Danilo, "Variations of total electron content over Serbia during the increased solar activity period in 2013 and 2014" in Geodetski vestnik, 60, no. 4 (2016):734-744,
https://doi.org/10.15292/geodetski-vestnik.2016.04.734-744 . .

TY  - CONF
AU  - Odalović, Oleg
AU  - Grekulović, Sanja
AU  - Joksimović, Danilo
AU  - Todorović-Drakul, Miljana
AU  - Popović, Jovan
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/780
AB  - This paper presents determination of height anomalies by the means of Global Geopotential Model 2008 (EGM08). Height anomalies were determined at 1073 points over the territory of Serbia, with known discrete values of height anomalies, which were also determined by satellite leveling. For each of the points, cumulative results of determination had been archived during the calculation for each degree, from 0 to 2190, thus 2191 results of determination were at the disposal for a point. The results obtained were compared with the discrete height anomaly values, and it was concluded that the highest quality of approximation for the discrete undulation values is being achieved using only coefficients up to 1181st degree, thus the present paper shall designate it: the optimal degree.
C3  - Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II
T1  - Selection of the global geopotential model 2008 optimal degree for height anomalies determination
EP  - 546
SP  - 539
UR  - https://hdl.handle.net/21.15107/rcub_grafar_780
ER  - 

@conference{
author = "Odalović, Oleg and Grekulović, Sanja and Joksimović, Danilo and Todorović-Drakul, Miljana and Popović, Jovan",
year = "2016",
abstract = "This paper presents determination of height anomalies by the means of Global Geopotential Model 2008 (EGM08). Height anomalies were determined at 1073 points over the territory of Serbia, with known discrete values of height anomalies, which were also determined by satellite leveling. For each of the points, cumulative results of determination had been archived during the calculation for each degree, from 0 to 2190, thus 2191 results of determination were at the disposal for a point. The results obtained were compared with the discrete height anomaly values, and it was concluded that the highest quality of approximation for the discrete undulation values is being achieved using only coefficients up to 1181st degree, thus the present paper shall designate it: the optimal degree.",
journal = "Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II",
title = "Selection of the global geopotential model 2008 optimal degree for height anomalies determination",
pages = "546-539",
url = "https://hdl.handle.net/21.15107/rcub_grafar_780"
}

Odalović, O., Grekulović, S., Joksimović, D., Todorović-Drakul, M.,& Popović, J.. (2016). Selection of the global geopotential model 2008 optimal degree for height anomalies determination. in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II, 539-546.
https://hdl.handle.net/21.15107/rcub_grafar_780

Odalović O, Grekulović S, Joksimović D, Todorović-Drakul M, Popović J. Selection of the global geopotential model 2008 optimal degree for height anomalies determination. in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II. 2016;:539-546.
https://hdl.handle.net/21.15107/rcub_grafar_780 .

Odalović, Oleg, Grekulović, Sanja, Joksimović, Danilo, Todorović-Drakul, Miljana, Popović, Jovan, "Selection of the global geopotential model 2008 optimal degree for height anomalies determination" in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II (2016):539-546,
https://hdl.handle.net/21.15107/rcub_grafar_780 .

TY  - CONF
AU  - Odalović, Oleg
AU  - Grekulović, Sanja
AU  - Joksimović, Danilo
AU  - Todorović-Drakul, Miljana
AU  - Popović, Jovan
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/737
AB  - This paper presents the evaluation and comparison test of a series of global geopotential models (GGM) using available terrestrial data over the territory of Montenegro. Using the model of Gravity Observation Combination 02S and 03S (G00002S and GOCO03S) with three different approaches (space-wise approach, time-wise approach, and direct approach) as well as the model of the Earth Gravitational Model 2008 (EGM08) and Earth Gravitational Model 1996 (EGM96) the anomalies of free air at 1293 points of gravimetric survey of Montenegro were determined; as well as the height anomalies at 46 points for which the discreet values of height anomalies are known. The discreet values of height anomalies were calculated as differences between orthometric heights, determined by high precision levelling and the ellipsoidal heights determined by the global positioning system (GPS/dh); and at the points of gravimetric survey of Montenegro, the free air anomalies related to the Geodetic Reference System 1980 (GRS80) and to the International Gravity Standardization Net 1971 (IGSN71) were determined. The data used in this paper are the data of gravimetric survey of former Socialistic Federative Republic of Yugoslavia, and the data of the height anomalies discreet values are data collected in March 2015 for further scientific research, particularly for geoid/quasigeoid determination for Montenegro.
C3  - Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II
T1  - Determination of discrete values of anomaly heights at territory of Montenegro
EP  - 184
SP  - 177
UR  - https://hdl.handle.net/21.15107/rcub_grafar_737
ER  - 

@conference{
author = "Odalović, Oleg and Grekulović, Sanja and Joksimović, Danilo and Todorović-Drakul, Miljana and Popović, Jovan",
year = "2016",
abstract = "This paper presents the evaluation and comparison test of a series of global geopotential models (GGM) using available terrestrial data over the territory of Montenegro. Using the model of Gravity Observation Combination 02S and 03S (G00002S and GOCO03S) with three different approaches (space-wise approach, time-wise approach, and direct approach) as well as the model of the Earth Gravitational Model 2008 (EGM08) and Earth Gravitational Model 1996 (EGM96) the anomalies of free air at 1293 points of gravimetric survey of Montenegro were determined; as well as the height anomalies at 46 points for which the discreet values of height anomalies are known. The discreet values of height anomalies were calculated as differences between orthometric heights, determined by high precision levelling and the ellipsoidal heights determined by the global positioning system (GPS/dh); and at the points of gravimetric survey of Montenegro, the free air anomalies related to the Geodetic Reference System 1980 (GRS80) and to the International Gravity Standardization Net 1971 (IGSN71) were determined. The data used in this paper are the data of gravimetric survey of former Socialistic Federative Republic of Yugoslavia, and the data of the height anomalies discreet values are data collected in March 2015 for further scientific research, particularly for geoid/quasigeoid determination for Montenegro.",
journal = "Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II",
title = "Determination of discrete values of anomaly heights at territory of Montenegro",
pages = "184-177",
url = "https://hdl.handle.net/21.15107/rcub_grafar_737"
}

Odalović, O., Grekulović, S., Joksimović, D., Todorović-Drakul, M.,& Popović, J.. (2016). Determination of discrete values of anomaly heights at territory of Montenegro. in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II, 177-184.
https://hdl.handle.net/21.15107/rcub_grafar_737

Odalović O, Grekulović S, Joksimović D, Todorović-Drakul M, Popović J. Determination of discrete values of anomaly heights at territory of Montenegro. in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II. 2016;:177-184.
https://hdl.handle.net/21.15107/rcub_grafar_737 .

Odalović, Oleg, Grekulović, Sanja, Joksimović, Danilo, Todorović-Drakul, Miljana, Popović, Jovan, "Determination of discrete values of anomaly heights at territory of Montenegro" in Informatics, Geoinformatics and Remote Sensing Conference Proceedings, Sgem 2016, Vol II (2016):177-184,
https://hdl.handle.net/21.15107/rcub_grafar_737 .

TY  - JOUR
AU  - Odalović, Oleg
AU  - Joksimović, Danilo
AU  - Grekulović, Sanja
AU  - Todorović-Drakul, Miljana
AU  - Popović, Jovan
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2235
AB  - This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM). The paper defines ellipsoid heights as an instance of geometrically defined heights; with physically defined heights being represented by definitions of orthometric and normal heights. Methods of normal heights calculation by the means of ellipsoid heights are presented in detail, as determined using the GNSS and height anomalies calculated from the
GGM application. Apart from the above, numerical part of the paper evaluates normal height values and compares them to their conditionally accurate values at 1073 points with relatively uniform distribution over the entire territory of Serbia. Conditionally accurate values had been determined by the means of classical geodetic terrestrial methods. Under the procedure of evaluating normal height values, GGM – GGM05C was used, as created in 2016 by the Center for Space Research, University of Texas at Austin. In order to evaluate the quality of applying the
model above, data on normal heights evaluation were also presented, using the GGM EGM96, created in 1996 by the National Imagery and Mapping Agency (NIMA), Goddard Space Flight Center (GSFC – NASA) and Ohio State University, presently being the most commonly used model. The comparison above indicates that application of the GGM05C model provides 50 % greater quality of normal heights evaluations against the ones obtained using the EGM96 model.
AB  - У оквиру рада приказани су геометријски и физички дефинисани системи висина, као и
њихова оцена применом глобалних навигационих сателитских система (GNSS) и глобалних
геопотенцијалних модела (GGM). У раду је дата дефиниција елипсоидних висина као представника геометријски дефинисаних висина, а у погледу физички дефинисаних висина приказане су дефиниције ортометријских и нормалних висина. Детаљно су представљени начини рачунања нормалних висина применом елипсоидних висина, које су одређене применом GNSS и аномалија висина које следе из примене GGM. Поред наведеног у нумеричком делу рада оцењене су вредности нормалних висина и упоређене са њиховим условно тачним вредностима и то у 1073 тачке које су релативно правилно распоређене по читавој територији Србије. Условно тачне вредности одређене су применом класичних
геодетских терестричких метода. У поступку оцене вредности нормалних висина коришћен је GGM GGM05C који је креиран 2016. године од стране Центра за космичка истраживања у Тексасу (Center for Space Research, Univesity of Texas at Austin). У циљу оцене квалитета примене наведеног модела приказани су и подаци оцене нормалних висина при примени GGM EGM96 који је креиран 1996. године од стране Националне агенције за дигиталну обраду слика и картирање (National Imagery and Mapping Agency - NIMA), Центра за космичке летове Националне космичке агенције (Goddard Space Flight Center – GSFC - NASA) и америчког Универзитета Охајо (Ohio State University), који до данас представља најчешће коришћени модел. Из наведеног упоређења следи да се применом модела
GGM05C добијају 50% квалитетније оцене нормалних висина од оних које следе из примене модела EGM96.
T2  - Glasnik Srpskog geografskog drustva
T1  - Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model
SP  - 103-124
DO  - https://doi.org/10.2298/GSGD1504103O
ER  - 

@article{
author = "Odalović, Oleg and Joksimović, Danilo and Grekulović, Sanja and Todorović-Drakul, Miljana and Popović, Jovan",
year = "2015",
abstract = "This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM). The paper defines ellipsoid heights as an instance of geometrically defined heights; with physically defined heights being represented by definitions of orthometric and normal heights. Methods of normal heights calculation by the means of ellipsoid heights are presented in detail, as determined using the GNSS and height anomalies calculated from the
GGM application. Apart from the above, numerical part of the paper evaluates normal height values and compares them to their conditionally accurate values at 1073 points with relatively uniform distribution over the entire territory of Serbia. Conditionally accurate values had been determined by the means of classical geodetic terrestrial methods. Under the procedure of evaluating normal height values, GGM – GGM05C was used, as created in 2016 by the Center for Space Research, University of Texas at Austin. In order to evaluate the quality of applying the
model above, data on normal heights evaluation were also presented, using the GGM EGM96, created in 1996 by the National Imagery and Mapping Agency (NIMA), Goddard Space Flight Center (GSFC – NASA) and Ohio State University, presently being the most commonly used model. The comparison above indicates that application of the GGM05C model provides 50 % greater quality of normal heights evaluations against the ones obtained using the EGM96 model., У оквиру рада приказани су геометријски и физички дефинисани системи висина, као и
њихова оцена применом глобалних навигационих сателитских система (GNSS) и глобалних
геопотенцијалних модела (GGM). У раду је дата дефиниција елипсоидних висина као представника геометријски дефинисаних висина, а у погледу физички дефинисаних висина приказане су дефиниције ортометријских и нормалних висина. Детаљно су представљени начини рачунања нормалних висина применом елипсоидних висина, које су одређене применом GNSS и аномалија висина које следе из примене GGM. Поред наведеног у нумеричком делу рада оцењене су вредности нормалних висина и упоређене са њиховим условно тачним вредностима и то у 1073 тачке које су релативно правилно распоређене по читавој територији Србије. Условно тачне вредности одређене су применом класичних
геодетских терестричких метода. У поступку оцене вредности нормалних висина коришћен је GGM GGM05C који је креиран 2016. године од стране Центра за космичка истраживања у Тексасу (Center for Space Research, Univesity of Texas at Austin). У циљу оцене квалитета примене наведеног модела приказани су и подаци оцене нормалних висина при примени GGM EGM96 који је креиран 1996. године од стране Националне агенције за дигиталну обраду слика и картирање (National Imagery and Mapping Agency - NIMA), Центра за космичке летове Националне космичке агенције (Goddard Space Flight Center – GSFC - NASA) и америчког Универзитета Охајо (Ohio State University), који до данас представља најчешће коришћени модел. Из наведеног упоређења следи да се применом модела
GGM05C добијају 50% квалитетније оцене нормалних висина од оних које следе из примене модела EGM96.",
journal = "Glasnik Srpskog geografskog drustva",
title = "Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model",
pages = "103-124",
doi = "https://doi.org/10.2298/GSGD1504103O"
}

Odalović, O., Joksimović, D., Grekulović, S., Todorović-Drakul, M.,& Popović, J.. (2015). Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model. in Glasnik Srpskog geografskog drustva, 103-124.
https://doi.org/https://doi.org/10.2298/GSGD1504103O

Odalović O, Joksimović D, Grekulović S, Todorović-Drakul M, Popović J. Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model. in Glasnik Srpskog geografskog drustva. 2015;:103-124.
doi:https://doi.org/10.2298/GSGD1504103O .

Odalović, Oleg, Joksimović, Danilo, Grekulović, Sanja, Todorović-Drakul, Miljana, Popović, Jovan, "Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model" in Glasnik Srpskog geografskog drustva (2015):103-124,
https://doi.org/https://doi.org/10.2298/GSGD1504103O . .

TY  - JOUR
AU  - Odalović, Oleg
AU  - Joksimović, Danilo
AU  - Grekulović, Sanja
AU  - Todorović-Drakul, Miljana
AU  - Popović, Jovan
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/685
AB  - This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM). The paper defines ellipsoid heights as an instance of geometrically defined heights; with physically defined heights being represented by definitions of orthometric and normal heights. Methods of normal heights calculation by the means of ellipsoid heights are presented in detail, as determined using the GNSS and height anomalies calculated from the GGM application. Apart from the above, numerical part of the paper evaluates normal height values and compares them to their conditionally accurate values at 1073 points with relatively uniform distribution over the entire territory of Serbia. Conditionally accurate values had been determined by the means of classical geodetic terrestrial methods. Under the procedure of evaluating normal height values, GGM – GGM05C was used, as created in 2016 by the Center for Space Research, University of Texas at Austin. In order to evaluate the quality of applying the model above, data on normal heights evaluation were also presented, using the GGM EGM96, created in 1996 by the National Imagery and Mapping Agency (NIMA), Goddard Space Flight Center (GSFC – NASA) and Ohio State University, presently being the most commonly used model. The comparison above indicates that application of the GGM05C model provides 50 % greater quality of normal heights evaluations against the ones obtained using the EGM96 model.
AB  - U okviru rada prikazani su geometrijski i fizički definisani sistemi visina, kao i njihova ocena primenom globalnih navigacionih satelitskih sistema (GNSS) i globalnih geopotencijalnih modela (GGM). U radu je data definicija elipsoidnih visina kao predstavnika geometrijski definisanih visina, a u pogledu fizički definisanih visina prikazane su definicije ortometrijskih i normalnih visina. Detaljno su predstavljeni načini računanja normalnih visina primenom elipsoidnih visina, koje su određene primenom GNSS i anomalija visina koje slede iz primene GGM. Pored navedenog u numeričkom delu rada ocenjene su vrednosti normalnih visina i upoređene sa njihovim uslovno tačnim vrednostima i to u 1073 tačke koje su relativno pravilno raspoređene po čitavoj teritoriji Srbije. Uslovno tačne vrednosti određene su primenom klasičnih geodetskih terestričkih metoda. U postupku ocene vrednosti normalnih visina korišćen je GGM GGM05C koji je kreiran 2016. godine od strane Centra za kosmička istraživanja u Teksasu (Center for Space Research, University of Texas at Austin). U cilju ocene kvaliteta primene navedenog modela prikazani su i podaci ocene normalnih visina pri primeni GGM EGM96 koji je kreiran 1996. godine od strane Nacionalne agencije za digitalnu obradu slika i kartiranje (National Imagery and Mapping Agency - NIMA), Centra za kosmičke letove Nacionalne kosmičke agencije (Goddard Space Flight Center – GSFC - NASA) i američkog Univerziteta Ohajo (Ohio State University), koji do danas predstavlja najčešće korišćeni model. Iz navedenog upoređenja sledi da se primenom modela GGM05C dobijaju 50% kvalitetnije ocene normalnih visina od onih koje slede iz primene modela EGM96.
PB  - Srpsko geografsko društvo, Beograd
T2  - Glasnik Srpskog geografskog društva
T1  - Evaluation of normal heights by the means of global navigation satellite systems and global Geopotential Model
T1  - Ocena normalnih visina primenom globalnih navigacionih satelitskih sistema i globalnih geopotencijalnih modela
EP  - 124
IS  - 4
SP  - 103
VL  - 95
DO  - 10.2298/GSGD1504103O
ER  - 

@article{
author = "Odalović, Oleg and Joksimović, Danilo and Grekulović, Sanja and Todorović-Drakul, Miljana and Popović, Jovan",
year = "2015",
abstract = "This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM). The paper defines ellipsoid heights as an instance of geometrically defined heights; with physically defined heights being represented by definitions of orthometric and normal heights. Methods of normal heights calculation by the means of ellipsoid heights are presented in detail, as determined using the GNSS and height anomalies calculated from the GGM application. Apart from the above, numerical part of the paper evaluates normal height values and compares them to their conditionally accurate values at 1073 points with relatively uniform distribution over the entire territory of Serbia. Conditionally accurate values had been determined by the means of classical geodetic terrestrial methods. Under the procedure of evaluating normal height values, GGM – GGM05C was used, as created in 2016 by the Center for Space Research, University of Texas at Austin. In order to evaluate the quality of applying the model above, data on normal heights evaluation were also presented, using the GGM EGM96, created in 1996 by the National Imagery and Mapping Agency (NIMA), Goddard Space Flight Center (GSFC – NASA) and Ohio State University, presently being the most commonly used model. The comparison above indicates that application of the GGM05C model provides 50 % greater quality of normal heights evaluations against the ones obtained using the EGM96 model., U okviru rada prikazani su geometrijski i fizički definisani sistemi visina, kao i njihova ocena primenom globalnih navigacionih satelitskih sistema (GNSS) i globalnih geopotencijalnih modela (GGM). U radu je data definicija elipsoidnih visina kao predstavnika geometrijski definisanih visina, a u pogledu fizički definisanih visina prikazane su definicije ortometrijskih i normalnih visina. Detaljno su predstavljeni načini računanja normalnih visina primenom elipsoidnih visina, koje su određene primenom GNSS i anomalija visina koje slede iz primene GGM. Pored navedenog u numeričkom delu rada ocenjene su vrednosti normalnih visina i upoređene sa njihovim uslovno tačnim vrednostima i to u 1073 tačke koje su relativno pravilno raspoređene po čitavoj teritoriji Srbije. Uslovno tačne vrednosti određene su primenom klasičnih geodetskih terestričkih metoda. U postupku ocene vrednosti normalnih visina korišćen je GGM GGM05C koji je kreiran 2016. godine od strane Centra za kosmička istraživanja u Teksasu (Center for Space Research, University of Texas at Austin). U cilju ocene kvaliteta primene navedenog modela prikazani su i podaci ocene normalnih visina pri primeni GGM EGM96 koji je kreiran 1996. godine od strane Nacionalne agencije za digitalnu obradu slika i kartiranje (National Imagery and Mapping Agency - NIMA), Centra za kosmičke letove Nacionalne kosmičke agencije (Goddard Space Flight Center – GSFC - NASA) i američkog Univerziteta Ohajo (Ohio State University), koji do danas predstavlja najčešće korišćeni model. Iz navedenog upoređenja sledi da se primenom modela GGM05C dobijaju 50% kvalitetnije ocene normalnih visina od onih koje slede iz primene modela EGM96.",
publisher = "Srpsko geografsko društvo, Beograd",
journal = "Glasnik Srpskog geografskog društva",
title = "Evaluation of normal heights by the means of global navigation satellite systems and global Geopotential Model, Ocena normalnih visina primenom globalnih navigacionih satelitskih sistema i globalnih geopotencijalnih modela",
pages = "124-103",
number = "4",
volume = "95",
doi = "10.2298/GSGD1504103O"
}

Odalović, O., Joksimović, D., Grekulović, S., Todorović-Drakul, M.,& Popović, J.. (2015). Evaluation of normal heights by the means of global navigation satellite systems and global Geopotential Model. in Glasnik Srpskog geografskog društva
Srpsko geografsko društvo, Beograd., 95(4), 103-124.
https://doi.org/10.2298/GSGD1504103O

Odalović O, Joksimović D, Grekulović S, Todorović-Drakul M, Popović J. Evaluation of normal heights by the means of global navigation satellite systems and global Geopotential Model. in Glasnik Srpskog geografskog društva. 2015;95(4):103-124.
doi:10.2298/GSGD1504103O .

Odalović, Oleg, Joksimović, Danilo, Grekulović, Sanja, Todorović-Drakul, Miljana, Popović, Jovan, "Evaluation of normal heights by the means of global navigation satellite systems and global Geopotential Model" in Glasnik Srpskog geografskog društva, 95, no. 4 (2015):103-124,
https://doi.org/10.2298/GSGD1504103O . .