Journal of Geodesy, Cartography and Cadastre - No 5 / 2016
Integral issue here
Table of Contents (technical articles)
Geodetic and oceanographic precision measurements for connecting tide gauges at surveying network and integration of National Geodetic Network in European EUREF and EUVN Reference Systems / Marius Dorin Anton, Radu Crișan, Vasile Nacu , Ioan Stoian, p. 3-8
A comparative study between gravimetric method and geometric method about determination of a precise quasigeoid for the area of Romania / Vlad Sorta, Mihaela Puia, Neculai Avramiuc, p. 9-13
Discretization of structures by finite element method for the displacements and deformation analysis / Aurel Sărăcin, p. 14-21
Application of the law 165/2013 by the inventory committee on Calarasi village, county of Dolj / Claudiu-Valentin Buzatu, Jenica Calina, p. 22-26
Precise point positioning – Current state / Alexandru Visan, Constantin Moldoveanu, p. 27-33
Combining the techniques of taking details relating to underground utility networks in the field / Andreea Carmen RĂDULESCU , Cătălin Ionuț VINTILĂ, Petre Iuliu DRAGOMIR, p. 34-38
Current issues in the field of immovable properties' registration and their prospects for settlement / Marcel Grigore, Petre Iuliu Dragomir, p. 39-47
Considerations on possibilities of quality control for geodetic instruments by metrological procedures applicable in the field / Plopeanu Marin, Badea Dragoș, Tănase Robert, Zbranca Claudiu, Corcoz Ioana, p. 48-53
Geodetic and oceanographic precision measurements for connecting tide gauges at surveying network and integration of National Geodetic Network in European EUREF and EUVN Reference Systems
Marius Dorin ANTON, Radu CRIȘAN, Vasile NACU, Ioan STOIAN
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
Over time, our country used several reference systems relative to levels Adriatic "zero Triest" Black Sea "zero Sulina" Black Sea "zero Constance" Baltic Sea "Kronstadt zero "Black Sea" zero Constanta 1975 "and the Black Sea" zero Constanta 1975 (1990 edition)”.
Between 1974-1989, Institute of Geodesy, Photogrammetry, Cartography and Land Management (IGFCOT) executed geometric leveling network works of Romania`s high precision (ord.I) processed in normal altitudes system relative to the reference system "zero Constanta "established by the Department of Military Topography (DTM) in 1975 and named" Black Sea 1975.
In Constanta city there is a tide gauges polygon, designed and executed in 1974, which was measured by highprecision geometric leveling annually in the period 1974 - 1990.
Also in 1997, on the occasion of realization of connection, using GPS technology of Romania`s national high precision leveling network to the European leveling network EUVN, near the Tide Gauge Commercial Port Plate( PMPC) Constanta, to the north about 0.70 m, was planted a brand type A EUVN(MGM) model, which was determined using GPS technology in 1997.
The works were resumed in 2004 and repeated in 2012-2014, according to the "Cooperation Agreement" registered between ANCPI and INCDM concerning to the achievement of precision leveling measurements and oceanographic measurements at the tide gauges and reflectors from Constanta, Mangalia, Sulina ports for biding tide gauges at leveling network and integration of national geodetic networks in European reference systems.
To achieve the project requirements, both classical technology was used to determine differences between the normal level of tide gauges and reference landmark of GPS permanent stations, as well as GPS technology to determine ellipsoidal difference level and relative positioning of respective points.
This article presents,beside a brief history of the issue, the results obtained in the period 2012-2014 and perspectives for further work.
Keywords: tide gauges , surveying networks, leveling
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A comparative study between gravimetric method and geometric method about determination of a precise quasigeoid for the area of Romania
Vlad Sorta, Mihaela Puia, Neculai Avramiuc
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
With the official launch of Romanian Position Determination System - ROMPOS, whose basic infrastructure consists of a network of 74 active geodetic reference station, the main problem of surveyors in Romania is to calculate a precise quasigeoid model.
The topic was addressed in several large studies, particularly doctoral thesis, noting that the absence of gravity measurements, gravimetric method was treated for only a limited area, namely the Bucharest zone.
Therefore, this article presents a comparative study between the geometric and gravimetric determination methods for a quasigeoid model, test area being limited to Bucharest.
Keywords: GNSS, precise levelling, quasigeoid, gravimetry, physical geodesy
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Discretization of structures by finite element method for the displacements and deformation analysis
Aurel Sărăcin
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
This paper presents a theoretical approach to meshing objects and how to extract information on movements and deformation analysis, providing a data processing about the studied object by finite element method. The flow of data in such a processing is based on the systems theory, with input data, a module for processing them on the basis of transformation functions and data output are subject to a check in advance. In this context, special importance is the process of achieving a mathematical model to approximate the processing to be better physical phenomena acting on analyzed the object and imposing designed limits on movements and deformations.
Keywords: numerical modeling, finite element, meshing, nodal displacements, degrees of freedom, efforts, natural coordinate system.
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Application of the law 165/2013 by the inventory committee on Calarasi village, county of Dolj
Claudiu-Valentin Buzatu, Jenica Calina
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
On 16.05.2013 was issued Law no. 165 on measures to complete the process of restitution in kind or equivalent buildings abusively taken during the communist regime in Romania. The main purpose of this law is to inventory each locality across farmland available for restitution to former owners, owners who until now have not been put in possession mainly because local committees of Land argued that no more land available for putting them in possession and issuance of property titles. In this regard in the date of June 19, 2013 have been published and implementing rules provide for the establishment of committees of inventory farmland, responsibilities for each member of the committee, the role of the specialist surveyor under these implementing rules specialists in surveying and identifying the land and transposing plots in digital format on orthophotomap, inventoried land boundaries in the form of closed polylines in national projection system in dxf. Format. Wil be presented as a case study village Calarasi, County of Dolj.
Keywords: property laws, cadastre, land inventory
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Precise point positioning – Current state
Alexandru Visan, Constantin Moldoveanu
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
The development of the permanent reference station networks all over the world has led to an increase number of real-time positioning technique users. Improved methods were developed to process the raw GNSS data, calculate the differential correction and transmit the standardized messages to the final users. A new approach, aiming for the individual GNSS error component was instated in terms of Space System Representation (SSR) concept. The expansion of the communication enabled projects such as EUREF-IP or IGS-REAL-TIME SERVICE to provide the necessary data stream over the internet. Precise point positioning (PPP) is the technique that benefits at full of this improved model.
Keywords: GNSS, Space System Representation, Precise Point Positioning
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Combining the techniques of taking details relating to underground utility networks in the field
Andreea Carmen RĂDULESCU, Cătălin Ionuț VINTILĂ, Petre Iuliu DRAGOMIR
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
This paper aims to present the main techniques of taking details relating to underground utility networks in the field, non-invasive techniques that complete each other. This paper is based on a job that could only be completed using all methods in the field.
The client had a requirement to accurately map the existing underground utility network within a site boundary in Carlow. The survey was largely due to developers and contractors not carrying out accurate as built surveys on underground service utilities during the construction period. The field team was contacted by the client and asked to provide a non-intrusive and accurate solution to their requirement. Therefore in obtaining a solution, the operators combined a number of survey methods together to achieve the required result. These methods included a ground penetrating radar survey incorporating a multi frequency array radar system, radio detection surveys and finally manhole surveys.
Keywords: GPR, multi frequency array radar system, radio detection.
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Current issues in the field of immovable properties’ registration and their prospects for settlement
Marcel Grigore, Petre Iuliu Dragomir
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
Considering the discussions taking place, in the current period, at national level, in this article are approached specific aspects of different issues relating to the preparation of cadastral documentations and registration of properties in the land book register and possible solutions in order to improve the legal framework.
Keywords: cadastre, real estate publicity, sporadic property registration, systematic property registration, cadastre and land registration law no. 7/1996, ANCPI’s Director General order no. 700/2014.
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Considerations on possibilities of quality control for geodetic instruments by metrological procedures applicable in the field
Plopeanu Marin, Badea Dragoș, Tănase Robert, Zbranca Claudiu, Corcoz Ioana
Received: April 2015 / Accepted: September 2015 / Published: Iune 2016
Abstract
Quality control of geodetic instruments is one of the main objectives of geodetic metrology. Ideally, this control can be achieved in a metrology laboratory where most procedures can be applied in a unified manner. In the absence of such a metrology laboratory, quality control is a complex and difficult task, especially due to the lack of integration of the metrological measurement procedures. In this article, the authors present some considerations on possible solutions to such difficult problems.
Keywords: Geodetic metrology, electronic total stations, EDM (Electro-Optical Distance Measurements), quality control of instruments, geodetic calibration, geodetic testing, geodetic standards.
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