scholarly journals ACCURACY OF THE GEODETIC CONTROL NETWORK DEVELOPED BY LAND METHODS

2019 ◽  
Vol 1 (1) ◽  
pp. 130-143
Author(s):  
Anton Nikonov ◽  
Irina Chesheva
Keyword(s):  
Comparative Analysis ◽  
Fourth Order ◽  
Geodetic Network ◽  
Control Network ◽  
Order Accuracy ◽  
Total Station ◽  
Minimal Network ◽  
Angular Measurements ◽  
Geodetic Control ◽  
The Given

The article gives comparative analysis of the creating horizontal and vertical geodetic control network for the purposes of research and building. It is recommended to create geodetic network on the territory up to 1–2 sq km by means of linear-angular measurements with the accuracy of urban fourth-order traverse. After centering the total station and the reflector with an error not more than 1 mm, the minimal network side is 140 m. The precalculation of geodetic control network accuracy with the given confidence level can be performed in CredoDAT. Creation of vertical and horizontal geodetic network should go simultaneously – by means of reciprocal trigonometric leveling of III–IV order accuracy. The height of the total station with use of specific tape measurer Leica can be measured with error of up to 1 mm. The requirements of the acting set of rules «Geodetic works in construction» are not always substantiated and require careful attitude.

Establishment of geodetic control network for Quy Nhon University area

2021 ◽  
Vol 15 (1) ◽  
pp. 61-73
Author(s):  
Quang Hien Truong ◽  
◽  
Anh Tu Ngo ◽  
Thi Hien Cu ◽  
◽  
...  
Keyword(s):  
Natural Resources ◽  
Research Result ◽  
Bench Mark ◽  
Control Network ◽  
Total Station ◽  
Network Diagram ◽  
Specialized Software ◽  
General Plan ◽  
Geodetic Control ◽  
The University

Geodetic control network of Quy Nhon University (QNU) is established based on GNSS technology and electronic total station technology in combination with the middle geometrical elevation surveying method, bench mark of network built with firm concrete installed with a centralized insulator cap. The network consists of 11 points, of which 2 points are traversed from the cadastral point of class I, used as the starting points for the traverse. The network is built based on total station method with 2 turns of forward and backward surveying. The network’s leveling height is measured by the middle geometrical elevation surveying method, ensuring compliance with the procedures and rules of the Ministry of Natural Resources and Environment. The research result includes a system of stable and solid network points, together with the coordinates and the leveling height that are closely adjusted by specialized software, control network diagram. Geodetic control network of the QNU is important in setting up map, general plan, planning, construction and serving for teaching and scientific research of the university.

Establishment of High Precision Horizontal and Vertical Control Network in Zoucheng City

2013 ◽  
Vol 864-867 ◽  
pp. 2787-2791
Author(s):  
De Bao Wang ◽  
Yong Xiang Liu ◽  
Wen Jing Yang
Keyword(s):  
Fourth Order ◽  
Function Method ◽  
Three Dimensional ◽  
Geodetic Network ◽  
Control Network ◽  
Control Points ◽  
Two Dimensional ◽  
Level Control ◽  
Vertical Control ◽  
Free Network

The paper uses D level, E level and the level of GPS control network establishment satellite space geodetic network in Zoucheng city, through the baseline calculating, classic adjustment of free network, three-dimensional unconstrained adjustment and two-dimensional constraint adjustment to get the WGS-84 three dimensional coordinates and 1980 xi 'an horizontal coordinates of control points; then using the fourth-order levelling connection survey all D-level and part E-level control points to build vertical control network, for the remaining GPS control points we utilize quadric function method using GPS elevation fitting given its elevation seek to obtain three-dimensional coordinates of all the basic control points.

scholarly journals Analysis of technological schemes for creating a geodetic control at the industrial site

2021 ◽  
Vol 249 ◽  
pp. 366-376
Author(s):  
Georgii Ustavich ◽  
Anatolii Nevolin ◽  
Vladimir Padve ◽  
Valerii Salnikov ◽  
Anton Nikonov
Keyword(s):  
Initial Data ◽  
Measurement Errors ◽  
Geodetic Network ◽  
Industrial Site ◽  
Building Structures ◽  
Engineering Structures ◽  
Total Station ◽  
Geodetic Control ◽  
Under Construction ◽  
Mean Square Errors

The article highlights the issues of creating with the necessary accuracy a planned control on the industrial site of the engineering structures under construction using satellite technologies and total stations. Depending on the design features of the engineering structures under construction, as well as the technological scheme for the installation of building constructions and industrial equipment, various schemes for creating such control are considered, based on the application of the inverse linear-angular notch. Errors in the source data are one of the main errors that affect the accuracy of geodetic constructions, including the solution of the inverse linear-angular notch. When creating a geodetic network in several stages, the errors of the initial data of the first stage affect the values of the root-mean-square errors (RMS) of determining the position of the second stage points, the errors of which affect the value of the RMS of the position of the third stage points, etc. The reason for their occurrence is the errors of geodetic measurements that occur at each stage of control creating, as well as the stability violation of the points during the production of excavation, construction and installation works. When determining the coordinates of a separate project point at the stage of its removal in-situ by a total station, the entire network is not equalized in the vast majority of cases, and the coordinates of the starting points to which the total station is oriented are considered error-free. As a result, the RMS determination of the points coordinates of the control network or the removal of the design points of the elements of building structures and equipment will also be considered satisfying the requirements, i.e. the measurement accuracy will be artificially overestimated and will not correspond to the actual one obtained. This is due to the fact that the accumulation of errors in the initial data is not taken into account when the number of steps (stages) of control creating increases. The purpose of this work is to analyze the influence of measurement errors and initial data when creating a geodetic control on an industrial site by several stages of its construction based on inverse linear-angular notches and a priori estimation of the accuracy of the determined points position.

The Establishment of D, E Grade GPS Control Network and Fourth-Order Leveling Network in Laicheng Industrial Zone of Laiwu City

2013 ◽  
Vol 846-847 ◽  
pp. 888-892
Author(s):  
De Bao Wang ◽  
Mei Lan Yu ◽  
Wen Jing Yang ◽  
Jun Feng Qu
Keyword(s):  
Fourth Order ◽  
Function Method ◽  
Three Dimensional ◽  
Geodetic Network ◽  
Control Network ◽  
Control Points ◽  
Two Dimensional ◽  
Industrial Zone ◽  
Level Control ◽  
Vertical Control

The paper uses D level,E level and the level of GPS control network establishment satellite space geodetic network in Laicheng industrial zone in Laiwu, through the baseline calculating, three-dimensional unconstrained adjustment and two-dimensional constraint adjustment to get the WGS-84 three dimensional coordinates and 1980 xi 'an horizontal coordinatesthe of control points; then using the fourth-order levelling connection survey all D-level, E-level control points and part GPS control points to build vertical control network, for the GPS control points of the remaining we utilize quadric function method using GPS elevation fitting given its elevation seek to obtain three-dimensional coordinates of all the basic control points.

scholarly journals ADI-FDTD Method With Fourth Order Accuracy in Time

2008 ◽  
Vol 18 (5) ◽  
pp. 296-298 ◽  
Author(s):  
Eng Leong Tan ◽  
Ding Yu Heh
Keyword(s):  
Fourth Order ◽  
Fdtd Method ◽  
Order Accuracy

scholarly journals RUSSIAN AND SERBIAN PHRASEOLOGICAL UNITS: EXPERIENCE OF COMPARATIVE ANALYSIS

2016 ◽  
pp. 166-170
Author(s):  
V. Dzonic
Keyword(s):  
Comparative Analysis ◽  
Russian Language ◽  
Cultural Characteristics ◽  
Historical Figures ◽  
Local Residents ◽  
Geographical Position ◽  
Cultural Component ◽  
The Given ◽  
Semantic Aspect ◽  
The Russian Language

This paper is devoted to identification of specific characteristics of Russian and Serbian phraseological units. The author considers the phraseological units from structural and semantic aspect and pays special attention to the national and cultural component of the studied units, which cause the greatest difficulties for foreigners. Identification of the given component is carried out by linguocultural analysis of components of phraseologicaly related word combinations. The material of research was comprised based on data from lexicographical dictionaries of Russian and Serbian languages. The phraseological units – toponyms are reviewed as a separate group and are, in the author’s opinion, bearers of rich linguoculturological information. The author identifies three main sources of imagery of these units: characteristics of the geographical position of the object; important historical and cultural events, as well as prominent historical figures, which brought fame to the region; lifestyle and crafts of local residents. The analysis allowed the author to identify specific national and cultural characteristics of a number of Russian and Serbian toponyms. This work is of an applied nature. Results of the study can be used in the teaching the Russian language as second Slavic language.

Comparative Analysis, Tools, and Questions

2018 ◽  
Author(s):  
Kathleen Araújo
Keyword(s):  
Comparative Analysis ◽  
Human Development Index ◽  
Energy System ◽  
Home Market ◽  
Energy Technologies ◽  
Energy Transitions ◽  
New Energy ◽  
Quality Of Living ◽  
The Given

This chapter returns to the overarching questions of this book, namely, how can national energy transitions be explained, to what extent do patterns of change align and differ in the transitions of this study, and how does policy play a role, particularly with innovations that emerged amid the transitions. To broadly answer, the four cases are comparatively examined here. The conceptual tools from Chapter 3 are also elaborated based on the findings. Implications of the results are discussed, and will serve as a basis for further discussion in Chapter 9 on how to think about energy transitions as a planner, decision-maker, and researcher. Among the more significant findings are the following. Greater energy substitution (in relative terms) occurred initially within the countries that extended or repurposed existing energy systems versus the country (i.e., Denmark) that developed a new energy system from a nearly non-existent one. Cost improvements were evident in all cases; however, a number of caveats are worth noting. Among the energy technologies and their services that were studied, only Icelandic geothermal-based heating was competitive in its home market in the 1970s; nonetheless, the remaining energy technologies that were studied later became cost competitive. As the national industries of this book became globally recognized, increases in the quality of living within the given countries also occurred, as gauged by the Human Development Index (HDI). With respect to timescales, substantial energy transitions were evident in all cases within a period of 15 years or less. In terms of technology complexity, this attribute was not a confounding barrier to change. Finally, government was instrumental to change, but not always the driver. There are countless ways to compare national energy transitions. This section illustrates ways of doing so, first by describing broadly observed, socio-technical patterns with the tool typologies outlined in Chapter 3. A discussion of tool refinement follows. The section then turns to more systematically assess key, qualitative and quantitative dimensions of the four transition cases.

Automation Tool Preparation in the Conditions of Production

2015 ◽  
Vol 770 ◽  
pp. 739-743 ◽  
Author(s):  
A.S. Yuanyushkin ◽  
D.V. Lobanov ◽  
D.A. Rychkov
Keyword(s):  
Comparative Analysis ◽  
Rational Design ◽  
Economic Effect ◽  
Optimal Choice ◽  
Processing Efficiency ◽  
Time Required ◽  
The Given ◽  
High Processing ◽  
Selection Of

The key task of the tool manufacturing is to create or to choose such a type of tool, which would permit to provide high processing efficiency, the best tool`s workability and the quality of the machined surfaces with minimum expenses and resources. The optimal choice of the constructive tool modifications from a variety of options takes much time required for the preparation of the tool to work. To solve this problem, we have developed software that allows you to create, organize and carry out a comparative analysis of structural instruments in order to identify rational option for the given conditions of production. Ordering and selection of a rational design of the instrument is carried out in accordance with established procedures of modeling and comparative analysis of design solutions. Application software can reduce design time technological process by 80...90%, and get a substantial annual economic effect.

Comparative Analysis of Volumetric Properties for Superpave Gyratory Compactors

2000 ◽  
Vol 1712 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Yetkin Yildirim ◽  
Mansour Solaimanian ◽  
Robert B. McGennis ◽  
Thomas W. Kennedy
Keyword(s):  
Comparative Analysis ◽  
Specific Gravity ◽  
Volumetric Properties ◽  
Standard Protocol ◽  
Tolerance Range ◽  
The Given

The experience with the original Superpave gyratory compactors (SGCs) introduced into the paving industry in 1994 was very positive. Consequently, since 1995 several additional manufacturers have developed SGCs to meet the growing demand for such devices. Although these units generally meet the broad requirements of the original SGC specification developed by FHWA, their basic designs are somewhat different. To ensure a systematic means for evaluation of the compactors, FHWA developed a standard protocol, designated AASHTO PP35. This procedure was used to evaluate various gyratory compactors. By using the discriminating value of 0.010 for difference in bulk specific gravity ( Gmb), the compactors were evaluated in terms of Gmb. The five gyratory compactors evaluated were the Rainhart, Test Quip, Troxler Electronic Laboratories, Inc. (Troxler), Model 4141, Pine Instrument Company (Pine) Model AFG1A, and Interlaken compactors. These compactors were compared with either Pine Model AFGC125X (Pine 1) or Troxler Model 4140 (Troxler 1) SGCs, which were used as reference compactors. In addition, the project included a comparison of two Pine compactors (Pine 1 and Pine 2) of the same model (AFGC125XS) with each other. A total of 336 specimens (48 specimens for each compactor) were prepared for all the compactors to fulfill the comparison. Eleven comparisons of each candidate compactor and the reference compactor were made during a 12-month period. All of the candidate compactors compared favorably with an existing SGC. It was found that all seven compactors would provide the same results within the given tolerance range under the rigid conditions of the AASHTO PP35 protocol.

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