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Zniekształcenia w transformacji między układami współrzędnych PL-1992, PL-2000, PL-LAEA i PL-LCC na obszarze powiatu ostrowieckiego

Author(s): Piotr Banasik / Language(s): Polish Issue: 1/2016

At work, there has been raised the issue of changes (distortion) of length, area, and angle in the transformation between national coordinate systems. Analysis of the distortion made for ostrowieckiego County area. Transformation of the coordinate was carried out between national systems PL-1992, PL-2000 and new coordinate systems PL-LAEA and PL-LCC. The calculation uses the algorithm testing distortion in the plane of the projection onto a plane. Ranges of distortion were calculated in the area of the district ostrowieckiego. Distribution of selected distortion was illustrated by cartograms

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Modele 3D ale spaţiului construit din Municipiul Reşiţa prin tehnici CAD şi G.I.S.

Author(s): George Laurenţiu Merciu / Language(s): Romanian Issue: 1/2012

The economic needs of urban development require proper design products that take into account the environment. Numerical modeling of urban space can generate tools for sustainable development. The aim of this paper is to present some 3D models of built space in Reşiţa city to highlight the extension of functional zones.

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Study of the Inclinometer Calibration Method using Geodetic Measurements

Author(s): Mihail Iacob,Vasile Chiriac,Vladimir Ciclicci / Language(s): English Issue: 25/2018

The inclinometer is used for small-angle measurement and can be fixed on the radio-communication tower to obtain changes relative to the construction’s vertical plane. The real inclination of the tower can be calculated by modelling the variables obtained from the inclinometer in combination with geodetic measurements. In order to perform assembly error calibration a precise mathematical model based on inclinometer data and total station measurements is proposed. For experimental measurements a dual axis inclinometer and a reference prisms installed on the rigid platform were used. Finally, through simulations of various inclination of the platform, the calibration method is validated and the inclinometer measurement accuracy is evaluated. The preliminary results show the possibility to use this calibration method in order to determine initial position of the inclinometer installed on the tower construction.

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Study of Deflection of the Vertical Determination Methods and the Influence on the Traditional Terrestrial Three-Dimensional Geodetic Measurements

Author(s): Vasile Chiriac / Language(s): English Issue: 23/2017

In present Global Navigation Satellite Systems (GNSS) are extensively used for national geodetic networks development and surveying. However; there are some applications where GNSS observations have to be integrated with traditional three-dimensional terrestrial geodetic measurements (e.g.; underground engineering surveying; hydro electrical construction monitoring etc.). In order to integrate the GNSS observations and traditional measurements using total stations; it is necessary to know the Deflection of the Vertical (DoV); defined as the angle between the gravity vector that coincide with plumb line and the ellipsoidal normal in a given point. This paper is focused on studies of DoV components influence on the traditional terrestrial three-dimensional geodetic measurement: distance; horizontal and vertical angles. DoV components were calculated in the test network using geodetic (ellipsoidal) height differences determined by GNSS measurements and normal height differences from levelling network. The preliminary results show the necessity to use 1-II order levelling measurements and at least 1 hour GNSS observation in order to determine DoV components with a level of precision comparable to the angular accuracy achievable by 1 arcsec precision total station.

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Update of the Topographic Parameters of the Structural Elements to the Pipes Networks

Author(s): Mihail Luca,Alexandru Lucian Luca,Daniel Toma,Fabian Tămășanu / Language(s): English Issue: 23/2017

The paper presents a way of updating the parameters of representation and tracing of the structural elements to the water supply networks in the execution or rehabilitation phase. Between the design phase and the construction phase of the pipe network components there are divergences in the field tracing. This situation arises, in particular, in the execution of rehabilitation works for water supply pipes. The case study on the rehabilitation works of the Timisesti - Iasi adduction pipeline that underlines the river Moldova confirms the necessity of changes in time of the topographic documentation of the execution. The morphological changes of the Moldova River bed during the period between the implementation of the rehabilitation project and its application in practice necessitated the modification of the situation plan and of the longitudinal profiles. The updating of the topographical documentation was carried out during the start of the execution of the works (plans for the location of the constructions and installations) and then during the rehabilitation works (longitudinal and transversal profiles).

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Evaluation of the Control Quality for Tachymetric Controlled Vehicles

Author(s): Otto Lerke,Volker Schwieger / Language(s): English Issue: 22/2017

This contribution presents the application of a new method for the evaluation of the control quality for vehicles, controlled by robot tachymeters. The method shows in which way a highly accurate measurement system, consisting of a laser tracker and an active target, is used to separate the measurement accuracy from the control quality for a subsequent evaluation. For several years, the Institute of Engineering Geodesy, University of Stuttgart operates a construction machine simulator to evaluate the performance of different sensors as well as filter and control algorithms under laboratory conditions. For this purpose a model truck (scale 1:14) is guided on a predefined reference trajectory as accurately as possible. Thereby the lateral control is realized by a PID controller. The root mean square value (RMS) of the lateral deviation between the driven and reference trajectory is called combined measure and is defined as quality criterion. Under laboratory conditions, the simulator achieves RMS values for combined measures of 2-4 mm. These values contain the measurement accuracy and the control quality. An external measurement system, the API Radian laser tracker, in combination with an active target allows to split up the two quantities. Thus the control quality can be evaluated individually. The investigation has shown that the simulator system reaches a control quality of 3,1 mm and a measurement accuracy of 2,9 mm.

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Measurement Methods Used in Tracking Behavior in Time of Construction

Author(s): Felicia Sătmăreanu / Language(s): English Issue: 21/2016

Tracking behavior while construction takes place throughout the life of the assets from its execution and is an activity systematic collection and use of information derived from observation and measurements of phenomena and sizes characterizing properties of construction in the process of interaction with the environment ambient and technology.While tracking the behavior of construction refers to changes in position and shape of all or some elements of it, and referral emergence of evolutionary phenomena that may affect construction safety. This allows taking speedy measures to prevent accidents, disasters and even loss of life.

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Spectral analysis of multi-year GNSS code multipath time-series

Author(s): Jacek Kudrys / Language(s): English Issue: 4/2019

In the presented study multi-year time series of changes in the L1 pseudo-range multipath are analysed. Data from 8 stations of the EUREF Permanent Network (EPN) were used in the study. Periodic components present in the signal and their stability over time were analysed. Also, the type of background noise was determined, based on the spectral index. In some cases, the presence of weak components with a 1/2 and 1/3 of the Chandler period has also been found. Time-frequency analysis shows that periodic signals are not stationary in most of the examined cases, and particular signal components occur only temporarily. The analysed signals were characterised by pink noise in the lower frequency range and by white noise for higher frequencies, which is also characteristic for time series of coordinates obtained from GNSS measurements.

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Importowanie mapy zasadniczej do modelu BIM

Author(s): Andrzej Szymon Borkowski / Language(s): Polish Issue: 3/2017

BIM technology becomes more and more popular in the process of design of buildings and construction. Most models are created on maps for design purposes sent to designers by surveyors. However, the proposed changes, including the introduction of the Urban and Building Code, are intended to allow to design on the basic map. In some cases it will be possible to design buildings on the basic maps. The paper presents the possibility of importing a vector map made in CAD technology into the BIM model. Properly imported underlay is the basis for further design in BIM technology.

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Właściwości kruszyw lekkich modyfikowanych zużytymi sorbentami mineralnymi

Author(s): Małgorzata Franus,Lidia Bandura / Language(s): Polish Issue: 2/2014

The paper presents the possibility of modification of the lightweight aggregate with mineral sorbents after sorption of petroleum substances. The aggregate is obtained with the plastic method by burning at 1170°C. Evaluation of the physical and mechanical properties was based on the parameters such as specific gravity, bulk density and volumetric density, porosity, water absorption, frost resistance and resistance to crushing. The investigated properties indicate that the resulting lightweight aggregate with the addition of used sorbents meets the basic requirements for the lightweight aggregates used in construction.

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Spatial Dimensions of Regional Innovativeness in Romania

Author(s): Szilárd Madaras ,Lehel Györfy / Language(s): English Issue: 20/2021

This paper contains the analysis of regional innovation performance in the NUTS 2 regions of Romania, based on the European Innovation Scoreboard evaluation for 2011 and 2019, and the identification of the most significant influencing factors of county-level R&D activity, for the 1997–2018 period. The Regional Innovation Index (RII) provides a profound characterization for Romanian regions regarding their innovation performance, which was studied using the GIS (Geographic Information System) methodology in relation with the regional R&D activity, GDP per capita, and entrepreneurship innovation. In the following, the Romanian R&D activity is analysed at the county level. The influencing factors of R&D expenditures and employment in Romanian counties were studied based on two panel regression models and using exogenous variables, for economic development, entrepreneurship, education, and infrastructure.

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Spatial Distribution of the Rural Development Programme in Relation to Population Retention between 2015 and 2019

Author(s): Csaba Szabó / Language(s): English Issue: 20/2021

The common agricultural policy accounts for more than 38% of the European Union’s budget. In the 2014–2020 cycle, 8.9 billion euros went in Hungary to the first pillar and 4.1 billion euros to the second pillar for rural development, the mobilization of which was coordinated by the Rural Development Programme. The second pillar of the Common Agricultural Policy plays an important role in catching up with the lagging and depopulated Hungarian countryside. It serves key objectives such as sustainable environmental management, strengthening and diversifying the rural economy, or a fair standard of living. In my dissertation, I explore the territorial distribution of the payments of the rural development programme between 2015 and 2019 and how it affects unemployment and incomes.

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Optimization of Measurements in the Geodetic Network for Monitoring the Horizontal Deformations of the Rogojeşti Dam

Author(s): Constantin Chirilă,Bianca Paula Siminicaru,Cristian Cucoară / Language(s): English Issue: 29/2020

The monitoring of the horizontal deformations of the dams in Romania was done by means of classical geodetic methods of angular measurements and, sometimes, of distance measurements. With the advent of GNSS technology, testing the capability of spatial geodetic networks to meet the precision requirements in monitoring the horizontal deformations of the engineering structures has begun. The case study was carried out for the monitoring network of the Rogojeşti dam, which is made of local materials and located on the Siret River, 12 km from its entrance in the north of Romania. Optimization of measurements in the monitoring network has been analysed from the perspective of global precision indicators (standard reference deviation) and errors in the horizontal positioning of new points, highlighted by the graphical representation of standard error ellipses. The optimization problems were taken into consideration by both the classic geodetic micro-triangulation network and the modern GNSS network, used either individually or through the horizontal distance components, in a combined micro-triangulation-trilateration geodetic network. The conclusions highlight that by combining both classical measurements (angular measurements) and GNSS measurements (by horizontal distance determinations), positioning errors can be diminished and an improvement in the geometric configuration of the error ellipses in the newly determined points compared to the simple network of geodetic micro-triangulation becomes noticeable.

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Topo-Cadastral Works Carried Out in View of the Cadastral Plan Corresponding to the Cadastral Sector Number 108 from the Village of Săliștea, Alba County

Author(s): Eva Koncsag,Diana Monica Vancea / Language(s): English Issue: 30/2021

The introduction of systematic cadastre in Romania represents a project entitled "National Cadastre and Land Registration Programme", developed at a national level since 2015. The period for the National Cadastre and Land Registration is from 2015 to 2023 and it aims at the systematic registration of buildings in 2337 LAUs located in rural and urban areas. The objective is to register buildings in the integrated cadastre and land registration system, tax-free, accompanied by the issue of certificates for the registration of owners.

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Problem Based Learning vs Challenge Based Learning in Geodetic Engineering

Author(s): Ana Cornelia Badea,Gheorghe Badea,Aurel Florentin Cătălin Negrilă,Petre Iuliu Dragomir / Language(s): English Issue: 32/2022

In this article we propose a comparative approach of what Challenge Based Learning vs Problem Based Learning means, as well as examples of the possibilities already applied in the Geodetic Engineering Domain, at master's and doctorate level. The CBL concept is analyzed from the perspective of creating a real link with market actors, public or private entities. The strong and weak points of CBL are identified from this perspective. A feasible work flow is identified, which leads to a win-win collaboration between universities and relevant actors.

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Classifying LiDAR Point Cloud Using Bentley Microstation Terrasolid and ArcGIS Pro Software Products

Author(s): Anca Patricia Grădinaru,Ana Cornelia Badea,Petre Iuliu Dragomir / Language(s): English Issue: 32/2022

In order to obtain accurate 3D City Models, some of the most important steps are geospatial data acquisition and the processing of this data. Aerial laser scanning (LiDAR-Light Detection and Ranging) is one of the most used methods of data acquisition and the main concern is classifying the point cloud in order to assign a class to each point. The classes of interest for 3D city models are the ground, buildings and possibly the high vegetation class which may interfere with the buildings. In this article, we aimed to highlight the main steps that are necessary to classify LiDAR point clouds. We chose two software products, one developed by Bentley – Microstation Terrasolid Suite and the second by Esri – ArcGIS Pro.

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Monitoring the Stability of Earthdams using Local Geodetic Networks

Author(s): Ioana Agapie (Mereuță),Mihail Luca,Paul Marian Gherasim / Language(s): English Issue: 33/2022

Monitoring the behavior of earth dams over time requires that they be permanently equipped with their own tools and control points. Monitoring is performed according to the importance category of the objective, control parameters, but also the specific conditions of the location. The paper presents a modern way of tracking structural deformations in the case of earth dams, owned by private owners, in order to assess their operational safety. The article presents three earth dams of different categories of importance (B, C and D), to analyze how to monitor each objective. The main study area is represented by the Piscicola Podișu accumulation located on the Valea Oii river in Iași county. For the location of the earth dam, measurements were made for the creation and monitoring of the local geodetic network. The network consists of reference points (S1, S2), station points (B1, B2, B3, B4) and control points (P1-P11) located on the studied dam. The way of working involved several stages. In the first stage, the site recognition and the monitoring requirements of the dam stability parameters were performed. In the second stage, the conditions for carrying out the measurements for drawing up the situation plan and designing the geodetic monitoring network were analyzed. In the third stage, measurements were performed for the design of a local GNSS geodetic network. The purpose of this paper is to design and analyze GNSS measurements in the monitoring of earth dams with modern technologies.

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Geospatial Data Integration using GIS-CAD Software

Author(s): Steliana Mariana Gogoașă / Language(s): English Issue: 33/2022

In the technological age, computerization becomes a key factor, both in the rationalization of the work schedule and in the provision of services and information, factors that help to achieve as efficiently as possible the ongoing projects. GIS technology is increasingly becoming a necessity for a number of companies and institutions working with geospatial data. CAD projects are also currently helping to develop each industrial sector with more accurate data, depending on their requirements, including architectural and construction companies, installation management, utilities. These two technologies, viewed in a unitary way, largely complement the need for information when drawing up a work plan. From this point of view, it is quite clear from the last few years that the interconnection of GIS and CAD data demonstratively improves the operability and elimination of errors at the level of projects of great importance, and not only. In this article it is aimed to highlight how to use and integrate 2D and 3D data with the help of GIS-CAD technologies. It was chosen a dataset related to the cadastral plan of the intravilan of Ceamurlia de Jos, Tulcea county, a dataset that was imported into GIS and CAD software products.

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Studies on the Real-Time Monitoring of Gura Apelor Dam

Author(s): Iustina Gabriela Ignat (Ștefan),Mihail Luca / Language(s): English Issue: 33/2022

This thesis presents a modern monitoring model of the geodetic parameters specific to dams made of earth and rock. The monitoring of dam components movements in the horizontal plane is currently carried out by the micro-triangulation method. The optimization of the monitoring process geometrical parameters for water accumulations dams requires the use of modern equipment and technologies. They allow a faster retrieval of data and its immediate processing with high-performance analysis programs. This reduces the time between measuring the formation and making the intervention decision. The studies and researches carried out have indicated the development and application of a real-time monitoring system of the geometrical parameters at Gura Apelor dam. The proposed monitoring system uses a set of modern equipment including Leica Nova TM50 total stations, 360° prisms and GNSS antennas. The monitoring equipment is supplied with sensors for atmospheric information for the correction of measurements.

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Quelles capacités des traceurs GPS à rendre compte des pratiques de mobilité quotidienne ? Une application sur des territoires de faible densité en Indre et Loire (37, France)

Author(s): Hervé Baptiste,Benoit Feildel,Marie Huyghe / Language(s): French Issue: 1/2018

The usefulness of geolocation equipment and associated data (loggers- or plotters-GPS, Smartphone) for research and surveys on daily mobility as well as the limits of these methods are widely recognized, and have been the subject of numerous methodological articles. on the one hand, our article contributes to this methodological knowledge by providing elements on the data processing protocol implemented during the research, which the literature shows is still evolving according to the research teams; on the other hand, it focuses on indicators that we have developed (statistical, territorial, temporal and cartographic), and on avenues for further development.

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