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A method of hydrographic survey technology selection based on the decision tree supervised learning / Ivana Golub Medvešek (2021)  

Public Titre : A method of hydrographic survey technology selection based on the decision tree supervised learning Type de document : Thèse/HDR Auteurs : Ivana Golub Medvešek, Auteur ; Hrvoje Dodig, Directeur de thèse ; Nenad Leder, Directeur de thèse Editeur : University of Split Année de publication : 2021 Importance : 106 p. Format : 21 x 30 cm Note générale : bibliographie Dissertation submitted for the degree of Doctor of Philosophy Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bathymétrie [Termes IGN] arbre de décision [Termes IGN] carte marine [Termes IGN] classification dirigée [Termes IGN] combinaison linéaire ponderée [Termes IGN] Croatie [Termes IGN] eaux côtières [Termes IGN] levé hydrographique [Termes IGN] lever bathymétrique [Termes IGN] profondeur [Termes IGN] sécurité maritime Index. décimale : THESE Thèses et HDR Résumé : (auteur) Hydrographic survey or seabed mapping plays an important role in achieving better maritime safety, especially in coastal waters. Due to advances in survey technologies, it becomes important to choose well-suited technology for a specific area. Moreover, various technologies have various ranges of equipment and manufacturers, as well as characteristics. Therefore, in this thesis, a proposed method of a hydrographic survey, i.e., identifying the appropriate technology, has been developed. The method is based on a reduced elimination matrix, decision tree supervised learning, and multicriteria decision methods. The available technologies were: SBES (research vessel), SBES+SSS (research vessel), MBES (research vessel), MBES (research vessel)+SBES (small boat), LIDAR (UAV), SDB (satellite sensors) and they are applied as a case study of Kaštela Bay. The optimal technology for Kaštela Bay study case was MBES (research vessel) and MBES (research vessel) + SBES (small boat) with a score of 0.97. Then with a score of 0.82 follows the SDB technology. Other available alternatives have a significantly lower score. It is a small evident difference between the three alternatives SBES (research vessel), SBES+SSS (research vessel), and LIDAR, which have a WSM score in the range from 0.58 – 0.65. Note de contenu : 1- Introduction 2- Basic characteritics of international hydrographic organizations and hydrographic survey 3- Analysis and evaluation of hydrographic surveys 4- Analysis of parameters as a function of hydrographic survey cost 5- Metodology of making the optimal hydrographic survey technologies solution 6- Case study 7- Concluding remarks 8- Literature 9- List of figures 10- List of tables 11- Biblography Numéro de notice : 28494 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Thèse étrangère Note de thèse : PhD Thesis : Sciences techniques : Split : Croatie :2021 Organisme de stage : Faculty of Maritime Studies (University of Split) DOI : sans En ligne : https://repozitorij.pfst.unist.hr/islandora/object/pfst:1069 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99231

The impact of terrestrial gravity data density on geoid accuracy: case study Bilogora in Croatia / Olga Bjelotomić Oršulić in Survey review, vol 52 n° 373 (July 2020)  

Public [article]  inSurvey review > vol 52 n° 373 (July 2020) . - pp 299 - 308 Titre : The impact of terrestrial gravity data density on geoid accuracy: case study Bilogora in Croatia Type de document : Article/Communication Auteurs : Olga Bjelotomić Oršulić, Auteur ; Danko Markovinović, Auteur ; Matej Varga, Auteur ; Tomislav Basic, Auteur Année de publication : 2020 Article en page(s) : pp 299 - 308 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] Croatie [Termes IGN] données CHAMP [Termes IGN] géoïde [Termes IGN] gravimétrie terrestre [Termes IGN] levé gravimétrique [Termes IGN] quasi-géoïde [Termes IGN] station d'observation Résumé : (auteur) One of the main challenges in physical geodesy today is achieving the 1-centimetre gravimetric quasi-geoid model, since a model of such accuracy could be used in the definition and realisation of the height reference frame. One of the main obstacles in this challenge is the lack of terrestrial gravity data or its uneven distribution. Therefore, the main question arises: what density of gravity points is necessary in order to obtain a gravimetric quasi-geoid model with an accuracy of 1 centimetre or even better? In this simulated study, the results show a trend of decreasing RMS related to the sparser dataset used in computation, leading to the conclusion that the determination of the sub-centimetre quasi-geoid model is no longer a theory, but can be achieved with the exact density of terrestrial gravity data: gravity observation stations have to be distributed no farther than 500 m from one another. When dealing with a very rough topography, the distance should be even shorter. Numéro de notice : A2020-456 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2018.1562747 Date de publication en ligne : 13/01/2020 En ligne : https://doi.org/10.1080/00396265.2018.1562747 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95555 [article]

Comparison and analysis of results of 3D modelling of complex cultural and historical objects using different types of terrestrial laser scanner / Admir Mulahusic in Survey review, vol 52 n° 371 (March 2020)  

Public [article]  inSurvey review > vol 52 n° 371 (March 2020) . - pp 107-114 Titre : Comparison and analysis of results of 3D modelling of complex cultural and historical objects using different types of terrestrial laser scanner Type de document : Article/Communication Auteurs : Admir Mulahusic, Auteur ; Nedim Tuno, Auteur ; Dubravko Gajski, Auteur ; Jusuf Topoljak, Auteur Année de publication : 2020 Article en page(s) : pp 107-114 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] balayage laser [Termes IGN] Croatie [Termes IGN] impulsion laser [Termes IGN] logiciel de reconstruction 3D [Termes IGN] modélisation 3D [Termes IGN] monument historique [Termes IGN] patrimoine culturel [Termes IGN] précision géométrique (imagerie) [Termes IGN] télémétrie laser terrestre [Termes IGN] traitement de données Résumé : (auteur) Laser scanning does not provide unlimited geometrical accuracy and integrity when scanning complex objects. Scanning systems have a minimum and maximum range in which they operate, depending on the technical characteristics. Scanning below or above these limits results in gross errors and registering of incorrect data. Laser scanners can have difficulties with certain materials such as marble and reflective surfaces. This paper presents the results of laser scanning of a complex monument of cultural and historical heritage using two different types of terrestrial laser scanners. Afterwards, the comparison and analysis of the results are shown. The scanners used were terrestrial laser scanners Faro Focus 3D (phase mode distance measurements) and STONEX X300 (pulse mode distance measurements). Numéro de notice : A2020-073 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2018.1528758 Date de publication en ligne : 09/10/2018 En ligne : https://doi.org/10.1080/00396265.2018.1528758 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=94638 [article]

The problem of double longitudes on Glavač’s map / Marina Viličić in Cartographic journal (the), Vol 55 n° 3 (August 2018)  

Public [article]  inCartographic journal (the) > Vol 55 n° 3 (August 2018) . - pp 217 - 234 Titre : The problem of double longitudes on Glavač’s map Type de document : Article/Communication Auteurs : Marina Viličić, Auteur ; Miljenko Lapaine, Auteur Année de publication : 2018 Article en page(s) : pp 217 - 234 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie ancienne [Termes IGN] carte ancienne [Termes IGN] Croatie [Termes IGN] dix-septième siècle [Termes IGN] longitude [Termes IGN] méridien [Termes IGN] régression linéaire Résumé : (Auteur) Stjepan Glavač (1627-1680) produced a map of Croatia dated 1673, on which two meridians appear twice, 40°/51° and 41°/52°. The only written source regarding Glavač’s map is the dedication, which forms an integral part of the map. It does not say which prime meridians Glavač relied on, so in our research we attempted to establish what those prime meridians might have been. We approached the problem of the double longitudes using linear regression, through which we wanted to examine the relation of Glavač’s longitudes to modern values. An essential part of the research was a comparison of Glavač’s map with maps by his predecessors and contemporaries which show approximately the same prime meridians. The maps analysed, with their written values for the longitudes of certain places, indicated that the selection of prime meridians at that time was not entirely reliable. A further problem seemed to be the knowledge of the position of islands chosen as points of departure for longitudes. We concluded that the points of departure for Glavač’s dual longitudes were Palma, one of the Canary Islands, and the islands of Corvo and Flores in the Azores. Numéro de notice : A2018-517 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2017.1386343 Date de publication en ligne : 18/10/2018 En ligne : https://doi.org/10.1080/00087041.2017.1386343 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91322 [article]

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New adjustment of the Croatian first order gravity network / Marija Repanic in Geodetski vestnik, vol 61 n° 4 (December 2017 - February 2018)  

Public [article]  inGeodetski vestnik > vol 61 n° 4 (December 2017 - February 2018) . - pp 630 - 648 Titre : New adjustment of the Croatian first order gravity network Type de document : Article/Communication Auteurs : Marija Repanic, Auteur Année de publication : 2017 Article en page(s) : pp 630 - 648 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] compensation [Termes IGN] constante [Termes IGN] Croatie [Termes IGN] erreur instrumentale [Termes IGN] étalonnage d'instrument [Termes IGN] réseau de premier ordre [Termes IGN] réseau gravimétrique local Résumé : (Auteur) The paper presents the new joint adjustment of the Croatian First Order Gravity Network, for the first time adjusted as a whole. The adjustment involves absolute and relative gravity measurements, latter performed in the course of four survey stages. Firstly, the measurements are concisely described. Revision of the absolute and pre-processing of the relative measurements are briefly presented. The applied adjustment model is described. Accordingly, the gravity values of all stations (absolute and relative), corrections of linear calibration coefficient and linear drift coefficients are included in the functional model as unknown parameters. The absolute measurements are included in the adjustment as observations. The new adjustment resulted in significantly different gravity values as compared to previous adjustments (of individual stages of the network). The differences in gravity values are an order of magnitude greater than the expected accuracy. It is shown that the differences are mainly due to the errors in the gravimeters’ calibration constants, which were neglected in the previous adjustments. Because of the significant differences, the new linear transformation function from the Potsdam to the Croatian Gravity System is determined. Numéro de notice : A2017-778 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.15292/geodetski-vestnik.2017.04.630-648 En ligne : http://www.geodetski-vestnik.com/61/4/gv61-4_repanic.pdf Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88984 [article]

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Quality control and new data-quality measures for the aesthetics of a Croatian topographic map at the scale of 1:25,000 / Branko Puceković in International journal of cartography, vol 3 n° 2 (December 2017)  

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An overview of scientific and professional projects in the field of basic geodetic works at the territory of Republic of Croatia in period from 1991–2009 / Marko Pavasović in Geodetski vestnik, vol 59 n° 4 (December 2015 - February 2016)  

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Fundamental gravity network of the Republic Croatia in the function of control and improving of national and European geoid model / I. Grgic (01/01/2010)

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Preliminary works on creation of the new geoid model HRG2009 / I. Grgic (01/01/2010)

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Proposal of nomenclatures of the new official sheets of the Republic of Croatia / Z. Hecimovic (01/01/2010)

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Quality control role in process of establishment of NSDI / S. Lemajic (01/01/2010)

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Report the east central and south east Europe division of the United Nations group of experts on geographical names on the work of its nineteenth session / Z. Hecimovic (2010)

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Les géomètres croates mettent à jour le cadastre de leur pays / Olivier Razemon in Géomètre, vol 2003 n° 7 (juillet - août 2003)

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Seismotectonic activity in dinaric alps based on satellite data and geophysical survey / M. Oluic (2001)

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60 Jahre der kartographischen Lehre und 25 Jahre der Tätigkeit des Instituts für Kartographie an der geodatichen Fakultät der Universität Zagreb / P. Lovric in Annuaire international de cartographie, n° 22 (1982)

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