Relevant bibliographies by topics / Geodetic research

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Geodetic research'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 August 2024

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Journal articles on the topic "Geodetic research"

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Wang, Y. S., P. Zhang, X. Q. Wang, and Z. Y. Wang. "RESEARCH AND IMPLEMENTATION OF GEODETIC DATABASE SYSTEM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W10 (February 8, 2020): 1183–87. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w10-1183-2020.

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Abstract. With the gradual formation of the space technical system of National Geodetic Datum, the storage management and application services of the geodetic data have been developing rapidly. This paper studies Geodetic data content, characteristics, classification principles and classification methods in the geodetic technology system and initially forms a standard classification system of geodetic data. On the basis of studying the key technical links to the modern Geodetic Datum comprehensive data acquisition, storage, management and service, this paper has tackled the real-time data optimal storage based on DBFS technology. Technical problems such as multi-dimensional data integration and docking of the software, building a safe and standardized management and the geodetic data service system, coordinating the application of network resources, storage resources, computing resources and other soft and hard environment elements, achieving efficient management and service of land, sea and air integrated observation data results, greatly improving the management ability and application service level of Geodetic data, for surveying and mapping. Business operation of the benchmark database provides support and promotes the social application on geodetic results.
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Nikonov, A. V., E. I. Dolgov, and S. V. Sergeev. "Sergej Jakovlevich Belykh, Siberian surveyor, Tutor, Military Topographer (120th birthday anniversary)." Geodesy and Cartography 979, no. 1 (February 20, 2022): 54–64. http://dx.doi.org/10.22389/0016-7126-2022-979-1-54-64.

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The paper is about Sergey Yakovlevich Belykh (1901–1963), a practitioner, teacher and military topographer who made a significant contribution to the development of higher geodesic education in Siberia. Information on the activities of the Higher Geodetic Department in Siberian Field District, where S. Y. Belykh worked after graduation from the Geodetic Faculty of Omsk Agricultural Academy in 1922 is presented. It is told about the arrangement of the Siberian Astronomic-and-Geodetic Institute in Omsk. Novosibirsk Institute of Engineers of Geodesy, Aerial Photography and Cartography (NIIGAiK), was subsequently formed there. The difficulties that the young geodesic university faced in 1940–1950 were highlighted. S. Y. Belykh’s military service in the Red Army Military Topographic Service (MTS) troops including work in the Scientific Research Institute of the MTS is described. There is information on colleagues of S. Y. Belykh and fragments of his daughter’s recollections.
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Rubtsov, Igor, and Oleg Rubtsov. "Geodetic monitoring of deflections of reinforced beams and reinforcing elements under variable static loading." E3S Web of Conferences 164 (2020): 08026. http://dx.doi.org/10.1051/e3sconf/202016408026.

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In the framework of the present study was carried out monitoring of reinforced concrete structures subjected to reinforcement. As reinforcement elements, steel channels were used, rigidly connected to a reinforced concrete beam to be reinforced. Object of research: systems of quasi-continuous observations of the parameters of the construction object carried out on the basis of the monitoring system. Subject of research: identification of the possibility of using various systems, in particular, geodetic and strain gauge monitoring, to monitor the bending of reinforced concrete elements and, in particular, reinforced concrete beams. Aim: Comparative analysis of strain gauge and geodetic monitoring in the process of fixed changes in static loads on structural elements. Materials and methods: the initial materials for this study were the results of geodesic and strain gauge monitoring during statistical step-by-step loading of reinforced concrete beam by steel channels. Results: on the basis of the obtained dependences of the deflection of elements of reinforced and reinforcing structures in time during their step-by-step statistical loading the possibility of using geodetic control is shown. Conclusions: The possibility of using geodesic and strain gauge methods for monitoring reinforced concrete structures is proved.
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Salamatina, Yu M., and S. I. Kuzikov. "RESEARCH OF POSITIONING ACCURACY BASED ON PHOTOGRAMMETRY." Herald of KSUCTA n a N Isanov, no. 1-2020 (April 6, 2020): 73–79. http://dx.doi.org/10.35803/1694-5298.2020.1.73-79.

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The methods of ground and space geodesy allow to determine with millimeter accuracy the position of separate geodetic points on the Earth's surface. The hardware and software of the photogrammetry method make it possible to build a 3D digital model of the observed geodetic area. The purpose of this work is to compare and evaluate the accuracy of relative positioning using geodesy and photogrammetry methods within the Bishkek geodynamic area.
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Sina, Bledar. "Building the Geodesic Network for the City of Gramsh through GNSS Surveys." International Research Journal of Innovations in Engineering and Technology 08, no. 03 (2024): 59–63. http://dx.doi.org/10.47001/irjiet/2024.803008.

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This study presents the methodology and results of establishing a geodesic network for the urban area of Gramsh, Albania, utilizing Global Navigation Satellite System (GNSS) surveys. The development of an accurate geodetic framework is essential for various applications including urban planning, infrastructure development, and cadastral mapping. The research focuses on deploying GNSS receivers strategically across Gramsh to collect precise positioning data, which is subsequently processed using differential correction techniques to achieve centimeter-level accuracy. Ground control points are established throughout the city to facilitate georeferencing and validation of the network. Additionally, quality control measures such as redundancy checks and error analysis are implemented to ensure the reliability of the geodesic network. The resulting network provides a reliable spatial reference system for the city of Gramsh, enabling efficient and accurate geospatial data collection, analysis, and decision-making processes for urban development projects. This study demonstrates the effectiveness of GNSS surveys in establishing geodetic infrastructure in urban environments and highlights their significance in supporting sustainable urban growth and management.
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Hagen, Rick A., Heinrich Hinze, Jürgen Monk, Fred Niederjasper, Hans Werner Schenke, and Tilo Schöne. "Applied marine geodetic research in polar regions." Marine Geodesy 17, no. 2 (April 1994): 81–94. http://dx.doi.org/10.1080/15210609409379716.

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TREVOHO, I., A. DRBAL, E. ILKIV, and M. GALYARNYK. "Research of technical characteristics of wall leveling signs in the context of the ethymology of terms." Modern achievements of geodesic science and industry 41, no. I (April 1, 2021): 55–60. http://dx.doi.org/10.33841/1819-1339-1-41-55-60.

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The aim is to clarify the etymology of the terms “wall leveling mark” and “wall leveling benchmark” in the context of the historical sequence of the appearance of leveling networks in the Ukrainian lands to present the author’s view on these definitions in scientific reference and encyclopedic geodetic literature. To conduct a chronological study of the phenomenon of leveling wall signs of different structures and the corresponding technologies of binding to them in leveling networks, which were created in the Ukrainian lands during the XIX–XXI centuries. Pay attention to the fact that level marks and wall frames, which are valid (working) independent geodetic signs in leveling networks, due to long-term operation are carriers of important geodetic information. Method. To study the results of the analysis of historical sources, standards, reference, encyclopedic and scientific literature in the context of the analysis of the definitions of “level mark” and “wall benchmark” was used analysis of patterns of functioning of the relevant geodetic terminological units. Results. On the territory of Ukraine during the XIX–XXI centuries. Created a leveling (height) network [State Geodetic Network, experimental operation], which operates to this day. The functioning of the leveling (height) network is regulated by legislative acts and regulations. Thanks to the geo-portal of the DGM of Ukraine created by NDIGK, it is possible to obtain information about the preserved level signs. The peculiarity of the leveling (height) network is that it was created by different departments of different countries [Glushkov V.V., 2003] with different height systems and taking into account the access of Ukrainian lands to the Black Sea. All this led to the use of different designs of wall leveling signs and, accordingly, their interpretation, which is not sufficiently reflected in the geodetic reference and regulatory literature. Scientific novelty. The performed comprehensive analysis of information sources can serve as a basis for development of scientific and technical recommendations formonitoring of level signs ofDGMofUkraine and will allow to reveal weaknesses of their functioning which are caused by changes in vital activity of the city environment. The practical value of the work is to solve the problem of distinguishing the production characteristics of the wall leveling mark and wall leveling benchmark, which are fixed leveling signs in geodetic networks of thickening and leveling networks to develop technical developments for inspection and updating points II, leveling networks classes and geodetic networks of thickening in the context of monitoring of geodetic points of DGM of Ukraine and their corresponding representation in the scientific and reference geodetic literature.
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Trevoho, Ihor, Valery Riabchii, and Vladyslav Riabchii. "Research of Compatibility and Systemity of Land Management Terminology." Baltic Surveying 9 (December 5, 2018): 63–68. http://dx.doi.org/10.22616/j.balticsurveying.2018.020.

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The analysis results of common terms in land management and their interpretations in normative-legal acts of Ukraine are presented. It have been established collisions and significant differences in the wording of even such common terms as a land parcel, a boundary of land parcel, a size of land parcel, etc. The purpose of the study is to identify collisions and contradictions of some key terms used in land surveying and geodetic works, as well as development of concrete proposals for improving and perfection the relevant terms. For this purpose, the following tasks were set and solved: analysis of regulatory legal acts of Ukraine concerning the conceptual apparatus of land management, systematization and generalization of substantiation results of the relevant terms correction need, development of proposals taking into account works content on land management and geodetic works for information provision of the State Land Cadastre. In the course of the study, the comparative method of analysis and the systematization of inconsistencies in the current normative legal acts of Ukraine regarding the terms and their interpretation are used. During the proposals development, known approaches "from general to partial" and vice versa were used. The established disadvantages do not allow unambiguously interpreting and performing such important work as geodetic setting or restoration of the land parcels boundaries, resolution of land disputes between adjacent users of land parcels. Completed summaries of content and wording of the relevant terms justify a need for correction of the terms and additions to their definitions. It was set the features of each term. As a result of integrated approach to solution of the existing problem and systematization of established differences, the general wording and detailed specification of the analyzed terms interpretations are proposed. Knowledge of technological stages for geodetic and land management works provided an opportunity to improve the geodetic information support of the State Land Cadastre. The proposals for correction of the studied terms eliminate existing contradictions, provide an unambiguous interpretation of land management terminology, which leads to the exact execution of geodetic and land management works, and, accordingly, obtaining reliable information for the State Land Cadastre.
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HORB, O., I. TREVOHO, V. TARNAVSKYY, and S. NESTERENKO. "Geodesic assurance of the Kharkiv “Nikolsky” shopping mall restoration." Modern achievements of geodesic science and industry 1, no. 47 (April 1, 2024): 29–35. http://dx.doi.org/10.33841/1819-1339-1-47-29-35.

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The application of geodetic surveys is a vital aspect of assessing the destruction of buildings as a result of Russian armed aggression. The study compares Ukrainian and foreign research methods, highlights their advantages and disadvantages. The legislative framework for geodetic support for restoration of buildings on the territory of Ukraine has been analyzed. As international experience has shown, geodetic surveys are an effective tool for assessing the destruction of buildings as a result of military operations. The study is aimed at evaluating the structural integrity on the example of the shopping and entertainment center “Nikolskyi” in the city of Kharkiv. Geodetic methods used to assess structural damage are reviewed, and an overview of the results of these damage assessments is provided. It is investigated how geodetic surveys can be used to assess structural damage in buildings. The purpose of the article is the study of geodetic works and methods of geodetic support for restoration works of the shopping center building. To achieve the goal, the following tasks were performed: analysis of previous experience in this area; the choice of the method of geodetic provision of restoration works; presenting the results of geodetic measurements; interpretation of the obtained results. Method. To obtain research results, special methods are used: constructive and substantive analysis – for the formation of research directions; analytical methods – to process the results of the shooting; mathematical modeling – to determine the amount of destruction and damage to the building. A Leica Geosystems TCRP 1205 tacheometer and other geodetic equipment were used in the study to assess the structural integrity of the shopping center. The combination of geodetic measurements with the use of tacheometers is an important area of application of tacheometers in similar tasks. In addition, classical surveys, using total station geodetic measurements, were performed in conjunction with an automatic strain monitoring system to ensure the accuracy and reliability of the structural integrity assessment. Therefore, using the specified devices, it is possible to accurately measure and analyze the structural integrity of the shopping center. Scientific novelty and practical significance. The scientific novelty of the conducted research consists in the creation of modern approaches to geodetic support for restoration works of buildings that were destroyed as a result of military operations. Original methods of geodetic surveying and a modern instrument base from NVP “Navigation and Geodetic Center” are applied. The proposed geodetic studies demonstrate the effectiveness of using geodetic measurements to assess structural damage to buildings. Deformation values obtained with the help of geodetic studies helped determine the volumes and technology of restoration, which provides important information for engineering works. It has been shown that the use of electronic tacheometer measurements is a reliable and accurate means of determining damage levels and locations even in complex fracture locations. The Leica TCRP 1205 total station accurately measures angles and distances in a reflection-free mode to achieve the highest accuracy of work. In addition, the measuring technology that was applied at the object of research can be used for geodetic research during the detection of shifts and deformations of building structures. Future research could explore the application of geodetic measurements to other types of buildings or structures damaged by military action. In general, the studies carried out reinforce the potential and importance of geodetic measurements for restoration programs that are planned and will be planned in the near future.
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Mazurov, B. T. "Geodynamic systems (qualitative research rotational movements)." Geodesy and Cartography 919, no. 1 (February 20, 2017): 35–39. http://dx.doi.org/10.22389/0016-7126-2017-919-1-35-39.

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Geodetic data and their subsequent statistical analysis enable mathematical modeling and identifying the stress-deformed state of geodynamic systems in concern to the aspect of natural and man-made disasters prediction. Geodetic monitoring geodynamic processes is necessary for solving a number of scientific and practical tasks of geodesy i.e. expanding and maintaining the national geodetic network, studying changes in gravity field in time, using GNSS technology. Most important extension of research is mathematical modelling of geodynamic systems in a predictive order. To study the complex (nonlinear) geodynamic processes the appropriate mathematical framework should be selected. Here are theoretical foundations for studying rotation movements of the earth’s surface. A mathematical model of rotary circular structures of the Earth was mentioned. There are mathematical models explaining the nature of sudden global, regional and some local geodynamic processes. They are based on differences in temporal and spatial scales, of geodynamic systems. Theoretical bases of description rotational motions on a plane by a system of differential equations were considered. Some examples of integral curves were given. They can be qualitative characteristics of geodynamic systems. In many cases, a similar trajectory corresponds to the rotational horizontal movements of the earth’s surface.
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Dissertations / Theses on the topic "Geodetic research"

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Bručas, Domantas. "Development and research of the test bench for the angle calibration of geodetic instruments." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080620_092300-91259.

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The main idea of current PhD thesis is an accuracy analysis of testing and calibration of geodetic instruments. The object of investigation is an analysis of means and methods for testing and calibration of geodetic instruments for plane angle measurement, development of such calibration equipment, its accuracy investigation and the research of its accuracy increasing possibilities. These objects are important for successful testing or calibration of geodetic instruments for angle measuring which is essential in ensuring the precision of measurements taken in surveying, construction, mechanical engineering, etc. There are several main goals of the presented work. First one is an analysis of the angle measuring methods and devices suitable for the testing and calibration of geodetic instruments, according to the results of the mentioned analysis the second task can be formulated – creation of a multi-reference plane angle testing and calibration equipment at Institute of Geodesy, Vilnius Gediminas Technical University and investigate the parameters of its accuracy. The third task is to investigate the accuracy increasing possibilities of the equipment, and implementation some of them into the practice. The thesis consists of four chapters, introduction, conclusions, list of references and appendixes. Introduction is dedicated for an introduction to the problem and its topicality. There are also formulated purposes and tasks of the work; the used methods and novelty of... [to full text]
Disertacijoje nagrinėjamos geodezinių kampus matuojančių prietaisų patikros bei kalibravimo metodai bei priemonės. Pagrindinis tyrimo objektas yra geodezinių prietaisų tikslumo parametrų matavimo būdų ir priemonių analizė, kalibravimo įrenginio kūrimas, jo tikslumo charakteristikų tyrimas bei įrenginio tobulinimas. Šie objektai yra svarbūs vykdant geodezinių prietaisų kalibravimą, kas savo ruožtu yra labai svarbu užtikrinant reikiamą šių prietaisų matavimų tikslumą geodezijoje, statybose, mašinų gamyboje ir t. t. Pagrindinis disertacijos tikslas – geodezinių kampų matavimo prietaisų kalibravimo galimybių analizė ir sukurto kalibravimo įrenginio tikslumo para¬metrų tyrimas. Darbe sprendžiami keli pagrindiniai uždaviniai: plokščiųjų kampų mata¬vimo metodų bei įrenginių, tinkamų geodeziniams prietaisams kalibruoti, analizė; daugiaetalonio kampų kalibravimo stendo kūrimas Vilniaus Gedimino technikos universiteto Geodezijos institute bei jo tikslumo charakteristikų tyri¬mas; stendo tikslumo didinimo galimybių bei priemonių tyrimas, ir apskri¬timinių skalių kalibravimo būdų tobulinimas. Disertaciją sudaro šeši skyriai, įvadas, išvados, literatūros sąrašas bei priedai. Įvade nagrinėjamas problemos aktualumas, formuluojamas darbo tikslas bei uždaviniai, aprašomas mokslinis darbo naujumas, pristatomi autoriaus pranešimai ir publikacijos, disertacijos struktūra. Pirmasis skyrius skirtas labiausiai paplitusių plokščiųjų kampų matavimo būdų bei priemonių tinkamų geodeziniams prietaisams... [toliau žr. visą tekstą]
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Anikėnienė, Asta. "Research and modeling of the recent vertical movements of the Earth’s Сrust on the basis of geodetic measurements (samples on Lithuanian territory)." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090309_141501-24272.

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The thesis deals with the studies on the velocities of the recent vertical movements of the Earth’s Crust by applying correlation, regression and multi-criteria analysis of geo-parameters of the territory. The objective of the research involves the regularities of the recent vertical movements of the Earth’s Crust, the relationship with the geo-parameters of the territory, models of forecasting for movements and methodology of compiling maps on the vertical movements of the Earth’s Crust. The experimental subject matter is the territory of Lithuania. The major task of the thesis is to work out the method for estimation and modelling of the recent vertical movements of the Earth’s Crust measured by applying geodetic methods and to implement the suggested method for compilation of the map of the recent vertical movements of the Earth’s Crust within the territory of Lithuania. In order to achieve the determined target, the following tasks were solved: 1) there were determined the values of the measured recent vertical movements of the Earth’s crust from the data of the repeated levelling; 2) there were examined the regularities of the change of the recent vertical movements of the Earth’s Crust; 3) there was investigated and determined the relationship of the measured recent vertical movements of the Earth’s Crust and geo-parameters of the territory; 4) there were analysed the possibilities of application regressive models for forecasting regarding recent verticals movements of... [to full text]
Disertacijoje nagrinėjami dabartiniai vertikalieji Žemės plutos judesių greičiai taikant teritorijos georodiklių koreliacinę, regresinę ir daugiakriterinę analizę. Pagrindinis tyrimo objektas – dabartinių vertikaliųjų Žemės plutos judesių dėsningumai, sąsajos su teritorijos georodikliais, judesių prognozavimo modeliai ir vertikaliųjų Žemės plutos judesių žemėlapio sudarymo metodika. Eksperimentinis objektas – Lietuvos teritorija. Pagrindinis disertacijos tikslas – parengti geodeziniais metodais išmatuotų dabartinių vertikaliųjų Žemės plutos judesių modeliavimo bei vertinimo metodiką ir ją taikant sudaryti Lietuvos teritorijos dabartinių vertikaliųjų Žemės plutos judesių žemėlapį. Siekiant įgyvendinti užsibrėžtą tikslą, išspręsti šie uždaviniai: 1) remiantis kartotinių niveliacijų duomenimis, nustatytos išmatuotų dabartinių Žemės plutos judesių reikšmės; 2) ištirti dabartinių vertikaliųjų Žemės plutos judesių kaitos dėsningumai; 3) ištirtos ir nustatytos išmatuotų dabartinių vertikaliųjų Žemės plutos judesių ir teritorijos georodiklių sąsajos; 4) išnagrinėtos regresinių modelių taikymo dabartiniams vertikaliesiems Žemės plutos judesiams prognozuoti galimybės ir parengtos rekomendacijos juos taikyti sudarant vertikaliųjų Žemės plutos judesių žemėlapius; 5) įvertinti dabartinių vertikaliųjų Žemės plutos judesių regresiniai prognozavimo modeliai taikant daugiakriterinės analizės metodiką; 6) taikant pasiūlytą metodiką, sudarytas Lietuvos teritorijos dabartinių vertikaliųjų Žemės... [toliau žr. visą tekstą]
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Modiri, Sadegh [Verfasser], Harald [Gutachter] Schuh, José M. [Gutachter] Ferrándiz, and Alireza A. [Gutachter] Ardalan. "On the improvement of earth orientation parameters estimation: using modern space geodetic techniques / Sadegh Modiri ; Gutachter: Harald Schuh, José M. Ferrándiz, Alireza A. Ardalan ; GFZ German Research Centre for Geosciences." Potsdam : Deutsches GeoForschungsZentrum GFZ, 2021. http://d-nb.info/1237615275/34.

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Tiesler, Russell Colin, and n/a. "A Decade of GPS geodesy in the Australian region: a review of the GDA94 and its performance within a time series analysis of a 10 year data set in ITRF 2000." University of Canberra. Information Sciences & Engineering, 2005. http://erl.canberra.edu.au./public/adt-AUC20051202.114435.

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The University of Canberra (UC) has been involved in GPS processing since the late 1980s. This processing commenced with the GOTEX 1988 campaign and progressed through a series of project specific regional campaigns to the current daily processing of a distributed set of continuously operating sites for the determination of precise GPS station positions for user applications. Most of these earlier campaigns covered only short periods of time, ranging from a few weeks to multiple occupations of a few days to a time over one to two years. With software developments, these multiple occupations were able to be combined to produce results from which crustal motion velocities could be extracted. This first became feasible with the processing of the Australian National Network (ANN), which yielded realistic tectonic velocities from two occupations (1992 and 1993) of sites 12 months apart. Subsequently, this was successfully extended by a further 12 months, with re-occupation of certain sites for a third time in 1994. Analysis of the results indicated that the accuracy of determining the earth signals improved as the time span from first to last observation was increased. The same was true also for the determination of the position of global references sites. However, by current standards the results achieved were poor. Consequently, the process was extended to combine the results of subsequent campaigns with the original ANN data set. From 1995 to 1999, campaigns were conducted across Australia, covering many State and tide gauge sites included in the original ANN solution. These provided additional multiple occupations to improve the determinations for both position and velocity. UC has maintained a data set of the global IGS sites, commencing with the IGS pilot campaign of 1992. Daily data sets for those global sites, which contained days common to the regional campaigns, were processed to produce our own independent global orbit and reference frame connection. The motivation for doing so was fourfold. �Firstly, to see if historic data could be reprocessed using current modern software and thus be able to be incorporated in this and other analysts research programs. �Secondly, to compare the results of the reprocessing of the original data set using modern software with the original ANN solution and then validate both the solutions. �Thirdly, to extend the timespan of observations processed to include more recent campaigns on as many original sites as possible. This to achieve a stronger solution upon which to base the determination of an Australian tectonic plate velocity model and provide quality assurance on the solution comparisons with re-observed sites. �Fourthly, to develop a set of transformation parameters between current coordinate systems and the GDA94 system so as to be able to incorporate new results into the previous system. The final selection of regional and global sessions, spanning from mid 1992 to late 2002, contained almost 1000 individual daily solutions. From this 10 year data span a well determined rigid plate tectonic motion model was produced for Australia. This site velocity model was needed to develop a transformation between the thesis solution in ITRF00 an the GDA94 solution in ITRF92. The significant advantage of the plate velocity model is that all Australian sites can now have computed a realistic velocity, rather than being given a value which has been interpolated between sites whose velocities had been determined over a one or two year span. This plate velocity model is compared with the current tectonic motion NNR-NUVEL-1A model and other recently published models. To perform the comparison between the thesis solution in ITRF00 and the GDA solution in ITRF92 a transformation was developed between the two reference systems. This set of transformation parameters, in conjunction with the plate velocity model developed, enables site solutions at any epoch in the current ITRF00 to be converted onto the GDA94, and vice versa, with a simple, non-varying seven parameter transformation. The comparisons between the solutions are analysed for both horizontal position and height consistency. There were 77 sites whose differences were compared. The horizontal consistency was within estimated precisions for 75 of the 77 sites. However, the vertical comparisons revealed many of the single epoch sites, especially in 1992, have inconsistent results between the two solutions. The heights from this thesis for some West Australian sites were compared with analysis done by DOLA and the height recoveries are very similar, indicating a weakness in the GDA94 solution for some of the single epoch sites. Some of these differences have been resolved but others are still under investigation. This thesis describes the repocessing of the original ANN data set, the addition of later data sets, the results obtained, and the validation comparisons of the old and new solutions. As well as the plate velocity model, transformation is provided which enables the user to compute between the GDA94 system, and any epoch result in ITRF00. Recommendations are made as to which sites need additional work. This includes sites which only need further analysis or investigation and those which require further observations to achieve a result which will have acceptable accuracy and reliability.
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Zhang, Xingyou. "Dynamics and numerics of generalised Euler equations : a thesis submitted to Massey University in partial fulfillment of the requirements for the degree of Ph.D in Mathematics." Massey University, 2008. http://hdl.handle.net/10179/980.

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This thesis is concerned with the well-posedness, dynamical properties and numerical treatment of the generalised Euler equations on the Bott-Virasoro group with respect to the general Hk metric , k 2. The term “generalised Euler equations” is used to describe geodesic equations on Lie groups, which unifies many differential equations and has found many applications in such as hydrodynamics, medical imaging in the computational anatomy, and many other fields. The generalised Euler equations on the Bott-Virasoro group for k = 0, 1 are well-known and intensively studied— the Korteweg-de Vries equation for k = 0 and the Camassa-Holm equation for k = 1. Unlike these, the equations for k 2, which we call the modified Camassa-Holm (mCH) equation, is not known to be integrable. This distinction motivates the study of the mCH equation. In this thesis, we derive the mCH equation and establish the short time existence of solutions, the well-posedness of the mCH equation, long time existence, the existence of the weak solutions, both on the circle S and R, and three conservation laws, show some quite interesting properties, for example, they do not lead to the blowup in finite time, unlike the Camassa-Holm equation. We then consider two numerical methods for the modified Camassa-Holm equation: the particle method and the box scheme. We prove the convergence result of the particle method. The numerical simulations indicate another interesting phenomenon: although mCH does not admit blowup in finite time, it admits solutions that blow up (which means their maximum value becomes infinity) at infinite time, which we call weak blowup. We study this novel phenomenon using the method of matched asymptotic expansion. A whole family of self-consistent blowup profiles is obtained. We propose a mechanism by which the actual profile is selected that is consistent with the simulations, but the mechanism is only partly supported by the analysis. We study the four particle systems for the mCH equation finding numerical evidence both for the non-integrability of the mCH equations and for the existence of the fourth integral. We also study the higher dimensional case and obtain the short time existence and well-posedness for the generalised Euler equation in the two dimension case.
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Літнарович, Руслан Миколайович, Руслан Николаевич Литнарович, and Ruslan Mykolaiovych Litnarovich. "Геодезичні мережі несуцільних спостережень." Thesis, Чернігівський державний інститут економіки і управління, 2003. http://elartu.tntu.edu.ua/handle/123456789/1546.

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Запропонована ідея створення планової геодезичної основи розвитком мереж несуцільних спостережень. До даного часу не було теоретичних досліджень і дані мережі не використовувались в топографо-геодезичному виробництві. Автором вперше проведений комплекс теоретичних наукових досліджень, опубліковано по даній темі дві монографії, чотирнадцять навчальних посібників, більше двадцяти статей. Вперше вирішена задача камеральної обробки мереж несуцільних спостережень. По складеній автором програмі виконані експериментальні дослідження на ряді еталонних і виробничих мереж.
На сучасному етапі в галузі топографо-геодезичного виробництва можна виділити дві основні тенденції. Перша полягає в широкому застосуванні методу визначення координат пунктів по системі GPS. Друга тенденція полягає в необхідності досягнення облікової одиниці площі на території обласних міст в 1 кв. м. На жаль, існуючі державні геодезичні мережі не можуть вирішити дану проблему. Адже точність координат пунктів державної геодезичної мережі складає 5 см., вони можуть забезпечити топографічні знімання масштабу 1:500. Але похибка 5 см. на 1 га. площі дасть похибку в 10 кв. м. Тому, вирішенню даної проблеми присвячується дана дисертаційна робота.
На современном этапе в отрасли топографо-геодезического производства можно выделить две основные тенденции. Первая заключается в широком применении метода определения координат пунктов по системе GPS. Вторая тенденция заключается в необходимости достижения учетной единицы площади на территории областных городов в 1 кв. м. К сожалению, существующие государственные геодезические сети не могут решить данную проблему. Ведь точность координат пунктов государственной геодезической сети составляет 5 см., они могут обеспечить топографические съемки масштаба 1:500. Но погрешность 5 см. на 1 гектар. площади даст погрешность в 10 кв. м. Поэтому, решению этой проблемы посвящается данная диссертационная работа.
On the modern stage in industry of geodetic production it is possible to select two basic tendencies. The first consists in the wideuse of method of determination of co-ordinates of points on the system of GPS. The second tendency consists in the necessity of achievement of registration unit of area on territory of regional cities in 1 apt. m. Unfortunately, existent state geodesic networks can not decide this problem. In fact exactness of co-ordinates of points of state geodesic network makes 5 centimetre, they can provide the topographical outputs of scale 1:500. But error 5 centimetre on a 1 hectare. will give areas error in 10 apt. m. Therefore, this dissertation work is dedicated the decision of this problem.
Чернігівський державний інститут економіки і управління
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Літнарович, Руслан Миколайович, Руслан Николаевич Литнарович, and Ruslan Mykolaiovych Litnarovich. "Геодезические сети несплошных наблюдений." Thesis, Черниговский государственный институт экономики и управления, 2005. http://elartu.tntu.edu.ua/handle/123456789/1547.

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Предложена идея создания плановой геодезической основы развитием сетей несплошных наблюдений. К данному времени не было теоретических исследований и данные сети не использовались в топографо-геодезическом производстве. Автором впервые проведен комплекс теоретических научных исследований, опубликовано по данной теме две монографии, четырнадцать учебных пособий, больше двадцати статей. Впервые решена задача камеральной обработки сетей несплошных на-блюдений. По составленной автором программе выполнены экспериментальные ис-следования на ряде эталонных и производственных сетей.
На современном этапе в области топографо-геодезического производства можно выделить две основные тенденции. Первая состоит в широком применении метода определения координат пунктов по системе GPS. Вторая тенденция состоит в необходимости достижения учетной единицы площади на территории областных городов в 1 кв. м. К сожалению, существующие государственные геодезические сети не могут решить данную проблему. Ведь точность координат пунктов государственной геодезической сети составляет 5 см, они могут обеспечить топографические съемки масштаба 1:500. Но погрешность 5 см на 1 га площади даст погрешность в 10 кв. м. Поэтому, решению этой проблемы посвящается данная диссертационная работа.
На сучасному етапі в області топографо-геодезичного виробництва можна виділити дві основні тенденції. Перша полягає в широкому застосуванні методу визначення координат пунктів за системою GPS. Друга тенденція полягає в необхідності досягнення облікової одиниці площі на території обласних міст в 1 кв.м. На жаль, існуючі державні геодезичні мережі не можуть вирішити дану проблему. Адже точність координат пунктів державної геодезичної мережі складає 5 см, вони можуть забезпечити топографічні знімання масштабу 1:500. Але похибка 5 см на 1 га площі дасть похибку в 10 кв.м. Тому, вирішенню цієї проблеми присвячується дана дисертаційна робота.
On the modern stage in area of geodetic production it is possible to select two basic tendencies. The first consists of wideuse of method of determination of co-ordinates of points by system of GPS. The second tendency consists of necessity of achievement of registration unit of area on territory of regional cities in 1 kv.m. Unfortunately, existent state geodesic networks can not decide this problem. In fact exactness of co-ordinates of points of state geodesic network is made by 5 sm., they can provide the topographical surveys of scale 1:500. But error 5 sm. on 1 ga of area will give an error in 10 kv.m. Therefore, this dissertation work is dedicated the decision of this problem.
Черниговский государственный институт экономики и управления
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Coetzer, Glenda Lorraine. "Designing a geodetic research data management system for the Hartebeeshoek radio astronomy observatory." Diss., 2018. http://hdl.handle.net/10500/25466.

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The radio astronomy and space geodesy scientific instrumentation of the Hartebeesthoek Radio Astronomy Observatory (HartRAO) in Gauteng, South Africa, generate large volumes of data. Additional large data volumes will be generated by new geodesy instruments that are currently under construction and implementation, including a lunar laser ranging (LLR) system, seismic and meteorological systems and a Very Long Baseline Interferometry (VLBI) global observing system (VGOS) radio telescope. The existing HartRAO data management and storage system is outdated, incompatible and has limited storage capacity. This necessitates the design of a new geodetic research data management system (GRDMS). The focus of this dissertation is on providing a contextual framework for the design of the new system, including criteria, characteristics, components, an infrastructure architectural model and data structuring and organisation. An exploratory research methodology and qualitative research techniques were applied. Results attained from interviews conducted and literature consulted indicates a gap in the literature regarding the design of a data management system, specifically for geodetic data generated by HartRAO instrumentation. This necessitates the development of a conceptual framework for the design of a new GRDMS. Results are in alignment with the achievement of the research questions and objectives set for this study.
Information Science
M.A. (Information Science)
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Chiu, Ya-Chu, and 邱雅筑. "Research on displacement modes and development of high-precision geodetic survey technique for tunnels in operation." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/83552019339315451191.

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博士
國立臺灣大學
土木工程學研究所
102
Analytical approaches of tunnel engineering begins with pursuing the stress-strain relationships around a hole in an elastic media. Start from close-form solution, the development of underground excavation support design method is nearly mature when it comes to convergence-confinement method. The existing methods were mostly proposed by European and American countries, where geological conditions are fairly good, and tunnel damages occur during excavation rather than after completion. Thus, it is generally recognized that tunnels are stable after construction. Understanding of tunnel mechanical behavior reaches only to the end of excavation, no rigorous theories aims to analyze the anomalies of tunnels in operation. Amid the international fever of advancing sustainable engineering structure, knowing the mechanical behavior throughout the whole service life is the key to future tunnel engineering. However, one the crucial part, the methods to evaluate the long-term safety and stability for tunnels in operation, is still absent. Influenced by frequent plate tectonics and lose rock consolidation, a major researches concerning these topics come from Japan and Taiwan. Some of the researches assume a specific factor that reduce tunnel safety, e.g. weakening of rock mass properties, tunnel structures, or change of external forces, and figure out the consequences by experiments or numerical modeling. The others collect a large amount of tunnel cases, and classify lining anomalies according to the feature. After confirm the cause to lining anomalies by surveillance data, it is possible to generalize the relationships between lining anomalies and its cause by statistics or experiences. However, there is a drop between existing methods and the needs to evaluate the safety and mechanical behavior of tunnels in operation. How to efficiently define tunnel structure conditions is still the threshold to sustainable tunnel engineering. This study focuses on tunnel displacement. An approach is proposed to analyze the complicated tunnel displacements by providing particular displacement modes. Displacements of tunnels in operation, with varied and intricate feature, is always an important index to interpret tunnel behavior, and a difficult problem to engineers or researchers. Regarding the displacements of a two-dimensional tunnel section as a vector, and assume that vector can be decomposed as the sum when a unit displacement occurs on every monitoring points. A finite element software is chosen to be the tool to generate the tunnel displacements. Followed by matrix and vector deduction, this study suggests displacement modes that has definite physical meaning, and independent with each other, the characteristic modes. Characteristic modes includes overall motions like translation and rotation, and also deformations including pure shear, triangular deformation, square deformation, pentagonal deformation,…etc. The ability of characteristic modes to describe tunnel displacements rises as the monitoring points increases. According to the results of circular, elliptic and horseshoe tunnel, the characteristic modes vary with shape of tunnel section. The form of characteristic modes are similar for elliptic and circular tunnels, but horseshoe tunnel possesses exceptional details on the lower part of the sidewalls and on invert. The increase in Young’s modulus of rock mass reduce the radial component of each characteristic mode. In respect that present survey technique cannot obtain the complete tunnel displacements owing to deficient precision, insufficient monitoring points and that the results are not in an absolute coordinate, this study cooperate with Pr. Tai-Tien Wang and Yong-Hsin Ltd. to develop a high precision geodetic survey technique named micro-displacement monitoring technology. This technique incorporate global positioning system, traverse survey, route survey and regression calculation, and three-dimensional global coordinate full section lining survey to be as one technique. To understand the feasibility and applicability of characteristic mode method and micro-displacement monitoring technology, a mountain tunnel located in southeast Taiwan is selected to survey and analyze. The traverse survey precision of six monitoring results within three years is between 1/90,518 to 1/29,915, higher than the required value of second-order traverse. The height survey precision is -3.88 to 5.00 mm(K)^0.5, while the single point precision is ±3-5 mm, higher than other current technique. The monitored data after processed with the procedure suggested by this research indicate that the case tunnel can be divided into five zones according to displacement properties. The zoning explains some of the physical meaning of tunnel displacements, provides a basis for determining the cause to lining anomalies, and may serve as a reference to decide the zoning of structural safety and stability.
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Books on the topic "Geodetic research"

1

Aardoom, L. Samen meten, beter weten: Voordrachten gehouden ter gelegenheid van de opening van het Astrometrisch-Geodetisch Observatorium te Westerbork, 24 september 1999. Delft: Nederlandse Commissie voor Geodesie, 2000.

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Dzurisin, Daniel. Volcano deformation: Geodetic monitoring techniques. Berlin: Springer, 2007.

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Torge, Wolfgang, Alvaro González Fletcher, and James G. Tanner, eds. Recent Geodetic and Gravimetric Research in Latin America. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1.

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Wolfgang, Torge, Gonzalez-Fletcher Alvaro, and Tanner James G. 1931-, eds. Recent geodetic and gravimetric research in Latin America. Berlin: Springer, 1993.

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Johansson, Jan M. A study of precise position measurements using space geodetic systems. Göteborg, Sweden: Chalmers University of Technology, 1992.

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Guoqiang, Tang. Studies of extragalactic radio source structure and its effect on geodetic VLBI measurement. Göteborg, Sweden: School of Electrical and Computer Engineering, Chalmers University of Technology, 1988.

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Śledziński, Janusz. Research activities of the Institute of Higher Geodesy and Geodetical Astronomy. Warszawa: Wydawnictwa Politechniki Warszawskiej, 1989.

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Muzeĭ antropologii i ėtnografii im. Petra Velikogo (Kunstkamera), ed. Nerchinskai︠a︡ ėkspedit︠s︡ii︠a︡. Sankt-Peterburg: MAĖ RAN, 2014.

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Kwaśniak, Mieczysław. Badanie wpływu niezawodności wewnętrznej sieci geodezyjnej na efektywność wybranych podejść do wykrywania błędow grubych: Research on the influence of internal reliability of geodetic network on the effectiveness of selected approaches to gross errors detection. Warszawa: Oficyna Wydawnicza Politechniki Warszawskiej, 2012.

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Geodesie, Nederlandse Commissie voor, ed. Wat is waar?: Nationaal geodetisch plan 1995 : een bezinning op de maatschappelijke rol van de geodesie als ruimtelijk-informatieve wetenschap en op de gewenste ontwikkeling van het veld in Nederland. Delft: Nederlandse Commissie voor Geodesie, 1996.

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Book chapters on the topic "Geodetic research"

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Caddess, H., H. Henneberg, E. Pallejá, and M. Pinch. "Inter-American Geodetic Integration." In Recent Geodetic and Gravimetric Research in Latin America, 3–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_1.

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Drewes, Hermann, Wolfgang Torge, Rüdiger Röder, Cesar Badell, Douglas Bravo, and Otto Chourio. "Geodynamic Research by Absolute and Relative Gravimetry in Venezuela." In Recent Geodetic and Gravimetric Research in Latin America, 202–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_17.

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Berrocoso, M., A. Fernández-Ros, M. E. Ramírez, J. M. Salamanca, C. Torrecillas, A. Pérez-Peña, R. Páez, et al. "Geodetic Research on Deception Island and its Environment (South Shetland Islands, Bransfield Sea and Antarctic Peninsula) During Spanish Antarctic Campaigns (1987–2007)." In Geodetic and Geophysical Observations in Antarctica, 97–124. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-74882-3_6.

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Melchior, P., M. Van Ruymbeke, C. Poitevin, J. Rasson, and B. Ducarme. "Tidal Gravity Measurements in Latin-America." In Recent Geodetic and Gravimetric Research in Latin America, 99–130. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_10.

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Freymueller, Jeffrey T., and James N. Kellogg. "Plate Motions and Active Crustal Deformation in the North Andean Region Measured with the Global Positioning System." In Recent Geodetic and Gravimetric Research in Latin America, 131–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_11.

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Niemeier, Wolfgang W., Julio Roldan, Luis Aguilar, Hans Pelzer, Andreas Bagge, Wolfgang Augath, and Werner Seifert. "The Project Corbas — Determination of Recent Crustal Movements in Costa Rica." In Recent Geodetic and Gravimetric Research in Latin America, 146–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_12.

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González-Ferrán, O. "Recent Dynamic Activity of the Bransfield Rift: Potential Zone of High Natural Hazard in Antarctica." In Recent Geodetic and Gravimetric Research in Latin America, 157–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_13.

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Araneda, Manuel, and M. Soledad Avendaño. "Gravity Variations in Central Chile." In Recent Geodetic and Gravimetric Research in Latin America, 176–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_14.

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Becker, M., E. Groten, M. Araneda, A. A. Cerrato, M. Starowinsky, G. Csapo, O. Hirsch, and F. Volponi. "Monitoring of Gravity Variations in the Southern Central Andes." In Recent Geodetic and Gravimetric Research in Latin America, 184–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_15.

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Klotz, J., D. Lelgemann, U. Gehlich, E. Kausel, and J. Viramonte. "Crustal Dynamic Investigations in the Central Andes Using GPS." In Recent Geodetic and Gravimetric Research in Latin America, 192–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-88055-1_16.

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Conference papers on the topic "Geodetic research"

1

Mathew, Deepa, D. Antony Xavier, and Santiagu Theresal. "Geodetic propagation in graphs." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS RESEARCH (ICAMR - 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016869.

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Mathew, Deepa, S. Arul Amirtha Raja, Eddith Sarah Varghese, and D. Antony Xavier. "Strong open geodetic number." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS RESEARCH (ICAMR - 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0017139.

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L. G., Bino Infanta, D. Antony Xavier, and Santiagu Theresal. "Strong (2,2) geodetic number of graphs." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS RESEARCH (ICAMR - 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016819.

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Kasyk, Lech, Monika Kijewska, Martyna Leyk-Wesolowska, Marek Kowalewski, Jerzy Pyrchla, and Krzysztof Pyrchla. "Research into the Movements of Surface Water Masses in the Basins Adjacent to the Port." In 2016 Baltic Geodetic Congress (BGC Geomatics). IEEE, 2016. http://dx.doi.org/10.1109/bgc.geomatics.2016.42.

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Onur, Şeyma, and Gökşen Bacak Turan. "Geodetic Domination Integrity of Transformation Graphs." In 6th International Students Science Congress. Izmir International Guest Student Association, 2022. http://dx.doi.org/10.52460/issc.2022.030.

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The concept of domination has a wide field of research in graph theory. The dominating set of a graph G is a subset S of vertices of G such that every vertex not in S is adjacent to at least one vertex in S [1]. The concept of domination has various types defined on vertices and edges. If each vertex in a dominating set S of the graph G is also a member of the geodetic set, then the set S is called a geodetic dominating set [2]. A communication network is a connection between centers and those centers that allow them to communicate with each other it consists of lines. These network centers can be modeled as the vertices of the graph and the connecting lines as the edges of the graph. Some parameters have been defined to measure the vulnerability of the graph in case some vertex or edge of the graph modeling a communication network is damaged. One of these parameters is the geodetic domination integrity [3]. In this study, the geodetic domination integrity of graphs is considered, and some general results are obtained for the geodetic domination integrity of some transformation graphs.
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Yuwono, Bambang Darmo, Moehammad Awaluddin, M. A. Yusuf, and Rizki Fadillah. "Geodetic deformation monitoring at Pendidikan Diponegoro Dam." In INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2016: The 6th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction. Author(s), 2017. http://dx.doi.org/10.1063/1.4987065.

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Jankauskienė, Dainora, Marija Eidukevičiūtė, and Vitalijus Volkovas. "Geodetic and Geotechnical Means of Sea Breakwaters' Monitoring System." In Civil engineering '17 : 6th International Scientific Conference "Research for Environment and Civil Engineering Development 17”. Latvia University of Life Sciences and Technologies, 2018. http://dx.doi.org/10.22616/ce.2017.010.

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Jankauskienė, Dainora, Marija Eidukevičiūtė, and Vitalijus Volkovas. "Geodetic and Geotechnical Means of Sea Breakwaters' Monitoring System." In Civil engineering '17 : 6th International Scientific Conference "Research for Environment and Civil Engineering Development 17”. Latvia University of Life Sciences and Technologies, 2018. http://dx.doi.org/10.22616/ce.2018.010.

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Pokonieczny, Krzysztof, Elzbieta Bielecka, and Paweł Kaminski. "Analysis of Geodetic Control Points Density Depending on the Land Cover and Relief – the Opoczno District Case Study." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.228.

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The main goal of this study is an analysis of statistical and spatial relationships between land cover, relief and geodetic control points’ location. We aimed at proving the previous results showing that in rural areas the density of horizontal geodetic points depends at least 50% on the land cover. Moreover, two clustering methods, k-means and Kohonen self-organising maps, were used to group surveying districts according to similarity in land use, relief and geodetic control density. The research methods includes statistical methods, ie. Pearson correlation and coefficient of determination computed by Pawlowski method as well as spatial autocorrelation expressed by Moran I global index. The results show that both clustering methods give very similar results, however for the k-means the surveying districts are more spatially clustered, than for Kohonen. The coefficient of determination R2 equals 0.652, what means that geodetic control points density in 65.2% explains by the percentage of built-up areas, forests and the standard deviation of elevation. The analysis was conducted for the 3rd order geodetic control points, for Opoczno district, located in the central part of Poland.
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Kaminskis, Janis, Lubova Sulakova, Kalvis Salmins, Janis Kaulins, and Lauris Goldbergs. "SLR and GNSS Test Field for Global Geodetic Network Assessment in Riga." In 11th International Conference “Environmental Engineering”. VGTU Technika, 2020. http://dx.doi.org/10.3846/enviro.2020.718.

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The basic aim is to contribute to the world geodetic space in line with today’s scientific achievements. Riga geodynamic site is a thankful place for this, as it has long-term SLR observations and the longest GNSS records in Latvia. The goal is establishment of regional long-term geodetic monitoring station at LU Institute of Astronomy, Riga, Kandavas street 2, by joining at least two space geodetic technologies – the already installed laser-telescope LS-105 and GNSS − collocated, but not sufficiently linked. The capability of geodetic GNSS observations would uniquely complement Riga GNSS station and allow to determine more accurate coordinates of the LS-105 laser telescope and the long-term changes needed to accurately measure the positions of Earth satellites and other similar space objects. GNSS Observation Station will contribute to the development of positioning and position long-term change to accuracy of less than 1mm, one of the current global goals of GGOS. We plan to solve the problem with the exact position of the telescope LS-105 it will contribute to the development of scientific research and applied potential of the LU Satellite Laser Ranging station. From the national point of view geodetic station serves as an important point for Latvian National Geodetic Network, long term large infrastructure planning, engineering communications, cartography, etc. From a global perspective the station will be one of very few such stations in the region and the only one in the Baltics capable of valuable contribution to ITRF network. Preparatory work for the study has started by selecting and consolidating geodetic points for further measurements.
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