Siniša Drobnjak

• PhD
• Head of sector at Military Geographical Institute

Flash floods are the result of climatic and hydrological extremes, and are manifested by dynamic and complex processes of movement of water and sediment. They represent the most frequent and widespread natural disaster at the global level, with unwanted ecological and economic consequences. The main causes of flash floods are related to numerous me...

The primary objective of this conference article is to review the technological procedure of gathering vegetation cover from aerial photogrammetric and satellite images and obtaining information in digital form in order to model digital topographic maps and augment the database of spatial data on vegetation cover (the areas of the map that change t...

Географски називи су од великог значаја за било коју државу и нацију, с обзиром да приказују карактерисике територије која се картира као и пејзаж, изражавају национални идентитет и културно наслеђе. У раду је описан начин креирања и основни поступци приказа географских назива на топографским картама. Креирње тематског слоја географских назива...

This study integrates aerial LiDAR data and 2D cartographic information to rapidly develop an advanced non‐photorealistic rendering (NPR) model for rural environment analysis. The focus is enhancing decision support in crises and assessing potential hazards in these territories. The methodology involves capturing LiDAR data from high altitudes and...

The paper analyzes four variants of conformal azimuthal projections for the territory of the Republic of Serbia. In the procedure, a double conformal mapping was applied. As it is common practice to perform mapping in azimuthal projections from a sphere to a plane, it was initially necessary to perform a conformal mapping from the ellipsoid to the...

The paper analyzes four variants of conformal azimuthal projections for the territory of the Republic of Serbia. In the procedure, a double conformal mapping was applied. As it is common practice to perform mapping in azimuthal projections from a sphere to a plane, it was initially necessary to perform a conformal mapping from the ellipsoid to the...

Mašinsko učenje, kao specifična oblast veštačke inteligencije, otvara nove horizonte za teorijska i eksperimentalna istraživanja u domenu daljinske detekcije, posebno u kontekstu klasifikacije satelitskih snimaka. Ovaj rad se fokusira na primenu metoda mašinskog učenja konkretno slučajnih šuma i potpornih vektora, u cilju klasifikacije satelitskih...

Mašinsko učenje, kao oblast veštačke inteligencije, pruža nove mogućnosti za teorijska i eksperimentalna istraživanja u oblasti daljinske dtekcije uopšte, pa i u slučaju klasifikacije satelitskih snimaka. U radu se opisuju principi i metode mašinskog učenja koje nalaze primenu u daljinskoj detekciji. Klasifikacija satelitskih snimaka se izvodi pomo...

Machine learning, as a specific domain within artificial intelligence, opens new horizons for both theoretical and experimental research in remote sensing, particularly in satellite imagery classification. This study focuses on applying machine learning methods, specifically decision trees and support vector machines, to classify satellite images....

Primena globalnih navigacionih satelitskih sistema (GNSS) svakodnevno postaje sve rasprostranjenija. Sa razvojem elektronske informacione tehnologije rastu i izazovi i pretnje za ovu oblast, prvenstveno kroz pojavu degradacije signala. Degradiranje satelitskog signala utiče na kvalitet pozicioniranja, navigacije i određivanja vremena, a učestalost...

The application of remote sensing methods provides useful information that can be used for numerous research. Thus, spatial changes in soil, vegetation, hydrography and such can be analyzed. By analyzing the data obtained by remote sensing methods, high-quality and important data can be obtained for monitoring changes in soil movement caused by lan...

The objective of this research is to report results from a new ensemble method for vegetation classification that uses deep learning (DL) and machine learning (ML) techniques. Deep learning and machine learning architectures have recently been used in methods for vegetation classification, proving their efficacy in several scientific investigations...

Cultural assets in the area of the Danube Limes in Serbia are an integral part of the world heritage “Roman Empire Borders”. The research presented in this paper includes the tourist and cartographic visualization of 19 Roman sites in the Danube Limes region of Golubac–Radujevac, to determine the real possibilities of tourism development in this ar...

Useful and important information for the spatial, ecological, and many other changes in the living environment may be obtained using the analysis of historical aerial photography, with comparison to contemporary imagery. This method provides the ability to determine the state of elements of the space over a long period, encompassing the time when i...

Analyzing historical aerial images can provide high-quality and important data for environmental and geographical surface research in general. Determination of human and other impacts in rural or urban areas, such as surface changes: on land (erosion or landslides), in vegetation (forests, meadows, various agricultural crops, etc.), hydrography (wa...

Kartografska generalizacija je kreativni proces apstrakcije, koji se koristi prilikom izrade karata. Uključuje proučavanje geografskog okruženja, procenu i obradu geo-podataka u odnosu na vrstu, namenu i razmeru karte. U eri digitalne kartografije veća pažnja se posvećuje automatizaciji procesa generalizacije i razvoju alata za automatsko uopštavan...

In this study, we developed multiple hybrid machine-learning models to address parameter optimization limitations and enhance the spatial prediction of landslide susceptibility models. We created a geographic information system database, and our analysis results were used to prepare a landslide inventory map containing 359 landslide events identifi...

Ocena kvaliteta digitalnih topografskih karata (DTK) u okruženju prostorn baze podataka primenjuje se u različitim etapama proizvodnog procesa prostornih podataka DTK i u svakoj etapi ima različite cilјeve. Zbog svoje vizualnosti, jednostavnosti i sažetosti korišćenja, DTK imaju velike prednosti nad drugim skupovima prostornih podataka i zbog toga...

Cartographic generalization is a creative process of abstraction, which is used in the design and content preparation of topographic maps. It includes the study of the geographic environment, processing of geographic data, and an evaluation with regard to type, purpose, and scale of the map, or selecting and merging their graphical presentation, wi...

Stanje i ispravnost površinskih voda u Republici Srbiji u direktnoj je korelaciji s klimatskim, hidrometeorološkim, ekološkim i antropogeografskim uslovima geoprostora. Svi ti faktori ukazuju da je u procesu upravljana vodnim resursima Srbije neophodan multidisciplinaran, multisektorski i pre svega integrativan pristup relevantnih organizacija vodo...

The article's main objective is to use GIS technology to identify potentially susceptible areas where landslides may occur by overlapping different spatial data. The following spatial data were used in the development of the GIS model of landslide susceptible areas: the slope, the aspect, the geological structure of the terrain, the topographical w...

The purpose of this paper's research is to create a model for the automatic generalization of the road network and other content from a topographical map on a scale of 1: 250 000 in order to create a thematic road map on a scale of 1: 500 000. The research objective is to create a model with process optimization for the development of a road map, a...

In this paper selection locations for fire monitoring cameras were performed with the aim of their detection and reduction of the environmental damage they cause. The proposed model is based on the combined application of Geographic Information Systems (GIS) and Multi-criteria Decision Making (MCDM) using fuzzy logic and the Analytical Hierarchical...

Many problems in the analysis of natural terrain surface shapes and the construction of terrain maps to model them remain unsolved. Almost the whole process of thematic interpretation of aerospace information consists of a step-by-step grouping and further data conversion for the purpose of creating a completely definite, problematically oriented p...

The main objectives of this paper are to demonstrate the results of an ensemble learning method based on prediction results of support vector machine and random forest methods using Bayesian average. In this study, we generated susceptibility maps of forest fire using supervised machine learning method (support vector machine—SVM) and its compariso...

This paper shows the basic characteristics of satellite images of remote sensing in managing emergency situations, as well as their ability to use in managing emergency plans. The satellite systems Landsat 8, Sentinel 2A and Modis were analyzed. Analyzing the accuracy of the classification of satellite images in crisis situations, it has been shown...

The main goal of this article is to produce a landslide susceptibility map by using the hybrid Geographical Information System (GIS) spatial multi-criteria decision analysis best-worst methodology (MCDA-BWM) in the western part of the Republic of Serbia. Initially, a landslide inventory map was prepared using the National Landslide Database, aerial...

Floods are considered one of the most disastrous hazards all over the world and cause serious casualties and property damage. Therefore, the assessment and regionalization of flood disasters are becoming increasingly important and urgent. To predict the probability of a flood, an essential step is to map flood susceptibility. The main objective of...

By using the tools and processes that make it, the Geographic Information System has become a standard in the field of data and space information creation. One of the important products of this work is presented in the form of geographic and cartographic information maps. In a scale of digital maps of the Military Geographical Institute, the starti...

Arsenic (As) is released into the aquatic environment through a complex combination of natural biogeochemical reactions and human interactions. The presence of increased concentration of arsenic in water sources is considered to be a global health risk. The problem of a large number of countries, as well as Serbia, is the contamination of drinking...

This article is connected with methods for automatic vegetation extraction using combination of multispectral satellite images and aerial photogrammetric images. Main goal of this paper is to suggest an optimal solution for easy mapping and updating vegetation areas on topographic maps. Vegetation areas are extracted on two ways: by visual interpre...

In order to conduct vegetation classification from high-quality imagery, as much as possible, a combination of multi-spectral satellite image and panchromatic aerial image is done. Data made by Multi-Spectral Imager on Sentinel-2A and Leica ADS80 Airborne Digital Sensor are used for the image combination. The combination process of low-middle resol...

The paper describes the results of the positional accuracy assessment of digital topographic maps at scale 1: 25 000 produced by the Serbian Military Geographic Institute (MGI). The test for the horizontal and vertical accuracy compliance of map sheets is done by comparing the planimetric and height coordinates of the ground points to the coordinat...

Floods are natural disasters with significant socioeconomic consequences. Urban areas with uncontrolled urban development, rapid population growth, an unregulated municipal system and an unplanned change of land use belong to the highly sensitive areas where floods cause devastating economic and social losses. The aim of this paper is to present a...

The paper describes the visualization possibility of estimated results of horizontal positional accuracy of digital topographic map scale at 1:25 000 (DTM25) using geostatistical interpolation method. Estimation of horizontal positional accuracy DTM25 is realized by using standard STANAG 2215 (Standardization Agreement), which is intended for publi...

Geospatial database, digital topographic map, road infrastructure, data quality baza prostorskih podatkov, digitalna topografska karta, cestna infrastruktura, kakovost podatkov KEY WORDS KLJUČNE BESEDE IZVLEČEK ABSTRACT This paper describes the basic logical data model from the central geospatial database (CGD) which is applicable to the structure...

Standardization in the field of geographical information related to the definition of the system of collection, preparation, storage, maintenance, presentation and sharing of geographic information. Quality information of available spatial data are vital in the process of selecting a dataset where data value is directly related to its quality. User...

In this study, land cover types and degree of urbanization in Belgrade test area were analyzed on the basis of the classification results acquired using object-oriented image analysis approaches. LANDSAT 7 with 7 spectral bands was used to carry out the image classification and ground truth data were collected from the available maps and personal k...

In this study, land cover types in mountain Avala, Belgrade (Serbia), test area were analysed on the basis of the classification results acquired using the pixel based and object-oriented image analysis approaches. SPOT 5 with 4 spectral bands was used to carry out the image classification and ground truth data were collected from the available map...

In this study, land cover types and degree of urbanization in Belgrade test area were analyzed on the basis of the classification results acquired using object-oriented image analysis approaches. LANDSAT 7 with 7 spectral bands was used to carry out the image classification and ground truth data were collected from the available maps and personal k...

Heavy metals occur naturally in rocks and soils, but increasingly higher quantities of them are being released into the environment by anthropogenic activities. Before any solution to the problem of heavy metal soil pollution can be suggested, a distinction needs to be made between natural anomalies and those resulting from human activities. In thi...

The paper analyses some models of rhumb line on the ellipsoid, sphere andmapprojection.In geodesyand cartography, rhumb line is a complex curve on the earth's surface that crosses every meridian atthe same oblique angle. Also, it is called a loxodrome.Specially,this article described somemathematical models of rhumb line on the different surfaces....

Geomorphometric exploration applied in the military terrain analysis is based on the GIS methodology of spatial analyses and is related primarily to military terrain analyses. It includes relief assessment aiming at producing ground clearance charts for the analysis of terrain maneuverability and its deployment, cover and concealment possibilities....

Appliance of computer technology in area of GIS and digital cartography lead to creating and developing new solutions in that science disciplines. Creating of the digital cartographic key and the new architecture in the GIS are very important. This paper, as part of technological development project realization (number TR 21037), describes applianc...

In this article, digital elevation models (DEMs) of Avala test area were simulated on the basis of Monte Carlo stochastic simulation. The purpose of this study is to generate multiple DEMs using error propagation techniques, then derive nitrogen storage for each realization, and finally evaluate how the propagated uncertainty correlates to various...

Digital representation of terrain has been an important focus in geography and surveying sciences for many decades. This article presents how the simulated digital elevation model (DEM) uncertainty affects common terrain analyses, such as slope and aspect calculations. In this article, the DEM of Avala test area was simulated on the basis of the Mo...

The paper deals the procedures and processes in the modeling of topographic data. There are some fazes and procedures of modeling of topographic data in digital form. It deals in capturing, modeling, distributing and archiving of data. Sometimes many procedures are need for convertion and transformation from one format to other, from one system to...

This paper analyzes methods of automatic vegetation extraction using multispectral high resolution satellite images. Main goal of this paper is to suggest an optimal solution for easy mapping and updating vegetation areas on the topographic maps. The TNTmips and PCI Geomatica software has been designed for classification, visualization and quality...

The purpose of this paper is to analyze the vulnerability of the satellite signal and GPS system to spoof attacks and to present anti-spoofing results. The effect of jamming GPS signals is to cause the signal at the receiver to be corrupted so that no valid GPS signal can be decoded by the receiver. The goal of spoofing, on the other hand, is to pr...