Wszystkie pola: geodetic networks - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Reliability design of geodetic networks by quality harmonization of observations
Autorzy:: Nowak, E.
Powiązania:: https://bibliotekanauki.pl/articles/225007.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: sieć geodezyjna
niezawodność
geodetic network
reliability
Opis:: Discreet construction of reliable network by adding and removing of observations is very time-consuming (even using computer calculations) and may demand a large, economically forbidding, number of observations or it may not lead to a positive effect anyhow. In this work there is presented a qualitatively different design mechanism which bases on modification of observation accuracy in order to reach its reliability. In addition, there is investigated the influence of such change on the reliability of other observations specified by the reliability matrix and its influence on the results of network adjustment and gross errors detection.
Źródło:: Reports on Geodesy; 2011, z. 1/90; 341-347
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Multipath effect analysis on selected points in control network "Wióry"
Autorzy:: Szpunar, R.
Walo, J.
Próchniewicz, D.
Woźniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/225113.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: sieci geodezyjne
geodetic networks
Opis:: Geodetic networks are a basic constructions periodically measured on engineering constructions. They usually joint two objects: control objects and reference objects. Physical points and geodetic observations realize it. Moreover, the reference points and control points have to be checked for their stability and measuring technique (visibility between reference and control points for terrestrial observations, multipath effect for satellite obseryations). Multipath effect analysis on selected points in control network "Wióry" is presented in the paper.
Źródło:: Reports on Geodesy; 2008, z. 1/84; 87-92
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Posteriori optimization of active geodetic monitoring networks
Autorzy:: Tretyak, K.
Savchyn, I
Powiązania:: https://bibliotekanauki.pl/articles/106830.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: active geodetic monitoring network
parameter of reliability
posterior optimization of geodetic network
large redundancy
aktywne monitorowanie sieci geodezyjnej
parametry niezawodności
optymalizacja sieci geodezyjnej
duża redundancja
Opis:: This paper presents developed method of a posteriori optimization of measurement results of active geodesic monitoring networks with taking into account the parameters of accuracy and reliability. Filtering the measurement results of active geodetic monitoring networks is in out of order exclusion vectors with maximum corrections, which is determined from successive iterations of network adjustment. After each iteration it’s determined the mean square error of unit weight and the parameter of network reliability. Sifting vectors with maximal errors leads to accuracy improving and reliability deterioration of network. Using entropy approach is defined group of vectors in which the value of accuracy and reliability is optimal. Using the developed method performed a posteriori optimization of active precision geodesic monitoring network of the Dnieper, Dniester and Kanev HPP. The represented method can also be used for the optimization of any active geodesic monitoring networks with large quantity of redundant measurements.
Źródło:: Reports on Geodesy and Geoinformatics; 2014, 96; 67-77
2391-8365
2391-8152
Pojawia się w:: Reports on Geodesy and Geoinformatics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Assessment of possible utilisation of results of geodetic monitoring of displacements of structures and their surroundings for the needs of verification of digital models
Autorzy:: Zaczek-Peplinska, J.
Popielski, P.
Powiązania:: https://bibliotekanauki.pl/articles/225348.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: monitoring
sieci geodezyjne
geodetic networks
Opis:: Each well designed project, related to digital modelling for the needs of assessment of conditions of an engineering structure, contains comparison of results of numerical calculations with results of surveying, Usually, results of levelling, which determine differences of elevation of controlled points of the structure, are the subject of such comparison. Results of measurements of a horizontal network may be presented in a similar way. In the course of comparison, functional, structural and accuracy differences of digital models, as well as models based on results of surveying monitorine should be also considered. Comparison of modelling results with results of surveys may be performed for various purposes. Besides the diagnosis of current conditions of the structure, emergency or non-standard situations, such comparison may be performed for specific demands of geodetic services, and, in particular, the needs of modernisation of the geodetic control oetwork or in the process of the initial control of surveys. Such comparison may be performed in order to asses the digital model, developed basing on archive geological reconnaissance and/or verification of values of parameters of materials. The paper discusses the demands of verification of digital analysis by means of back analysis, as well as possibilities to utilise the results of geodetic monitoring for the needs of calculations. It should be noticed that the geodetic control network should be consulted with designers of the particular structure and with the entity which performed numerical analyses. Those issues are illustrated by means of the example of development of the control network and the numerical model for a building, which is jocated in the densely built-up area, within the direct neighbourhood of the Warsaw underground.
Źródło:: Reports on Geodesy; 2009, z. 2/87; 437-448
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Tropospheric delay in GNSS and meteorological ZTD and IPW data sources
Autorzy:: Kruczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/225151.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: GNSS
sieci geodezyjne
meteorologia
geodetic networks
meteorology
Źródło:: Reports on Geodesy; 2008, z. 2/85; 125-137
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Data processing of the ASG-EUPOS network test campaign
Autorzy:: Jaworski, L.
Świątek, A.
Zdunek, R.
Zieliński, J. B.
Powiązania:: https://bibliotekanauki.pl/articles/225178.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: ASG-EUPOS
GNSS
sieci geodezyjne
geodetic networks
Źródło:: Reports on Geodesy; 2008, z. 2/85; 113-124
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: ASG-EUPOS densification of EUREF permanent network on the territory of Poland
Autorzy:: Bosy, J.
Oruba, A.
Graszka, W.
Leończyk, M.
Ryczywolski, M.
Powiązania:: https://bibliotekanauki.pl/articles/225175.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: ASG-EUPOS
GPS RTK
sieci geodezyjne
GPS-RTK
geodetic networks
Źródło:: Reports on Geodesy; 2008, z. 2/85; 105-111
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Algorithm of determining the coexistence levels of unknowns and thier binding functions in linear equation systems
Autorzy:: Kwaśniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/225493.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: algorytm
sieci geodezyjne
układ równań liniowych
algorithm
geodetic networks
system of linear equations
Opis:: The study presents a unified algorithm of determining the coexistence levels in any system of linear equations. The coesistence levels can be determined both for the system unknowns (or groups of) as well as for functions binding those unknowns (equations or their groups). Because we deal with systems of linear equations also in geodetic networks, the presented algorithm allows the determination of coexistence levels of network points or observations made within that network. Due to the possibility of grouping of unknowns and equations in the algorithm, there are no limitations of space for the geodetic network. The functioning of the presented algorithm has been iIlustrated by the example of a linear, horizontal geodetic network. Exemplary tasks have also been shown, in which the coexistence levels can be helpful.
Źródło:: Reports on Geodesy; 2009, z. 2/87; 217-223
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Determination of horizontal geodetic control networks for engineering objects using optoelectronic techniques
Autorzy:: Ćmielewski, K.
Kuchmister, J.
Gołuch, P.
Wilczyńska, I.
Kowalski, K.
Powiązania:: https://bibliotekanauki.pl/articles/106867.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: engineering geodesy
geodesy in industry
laser planes’ edges network
CCD camera
inżynieria geodezyjna
geodezja w przemyśle
sieć laserowych płaszczyzn
kamera CCD
Opis:: The correctness of the geodetic service of an engineering object not seldom requires designing, alignment or renewing of geodetic situational control points. Building robots often cause that fixed situational control points are partly or completely inaccessible. For setting the position of these control points, there is worked out the methodology using the optoelectronic method. The prepared set of tools realizes the method’s assumptions and enables to determine the sides and control points based on the set of laser planes. In this article there is presented the innovative set of geodetic equipment for fixing horizontal control points. The presented set has been experimentally tested under laboratory conditions taking its functionality, operation range and applied accuracy into account. The measurement accuracy of the set of tools, resulting from identification of the energetic centres of laser planes’ edges, visualizing the sides of geodetic control networks, is within the range of ±0.02mm - ±0.05mm. There were also discussed exemplary versions of shapes and structures of horizontal geodetic control networks (regular and irregular), which are possible to be fixed with the use of the constructed set of tools.
Źródło:: Reports on Geodesy and Geoinformatics; 2015, 98; 39-51
2391-8365
2391-8152
Pojawia się w:: Reports on Geodesy and Geoinformatics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Application of virtual reference stations in ASG-EUPOS system for optimalization of reference elements set in three dimensional points seting out networks established using satellite GNSS technichnique
Autorzy:: Siejka, Z.
Powiązania:: https://bibliotekanauki.pl/articles/225368.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: wirtualne stacje referencyjne
VRS
AGS-EUPOS
POZGEO-D
GPS
sieci geodezyjne
virtual reference stations
geodetic networks
Źródło:: Reports on Geodesy; 2009, z. 2/87; 359-372
0867-3179
Pojawia się w:: Reports on Geodesy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Impact analysis of observation coupling on reliability indices in a geodetic network
Autorzy:: Nowak, E.
Odziemczyk, W.
Powiązania:: https://bibliotekanauki.pl/articles/106805.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:: geodetic networks
network design
second order design
network’s reliability
sieci geodezyjne
projektowanie sieci
projekt drugiego rzędu
niezawodność sieci
Opis:: An optimally designed geodetic network is characterised by an appropriate level of precision and the lowest possible setup cost. Reliability, translating into the ability to detect blunders in the observations and higher certainty of the obtained point positions, is an important network characteristic. The principal way to provide appropriate network reliability is to acquire a suitably large number of redundant observations. This approach, however, faces limitations resulting from the extra cost. This paper analyses the possibility of providing appropriate reliability parameters for networks with moderate redundancy. A common problem in such cases are dependencies between observations preventing the acquisition of the required reliability index for each of the individual observation. The authors propose a methodology to analyse dependencies between observations aiming to determine the possibility of acquiring the optimal reliability indices for each individual observation or groups of observations. The suggested network structure analysis procedures were illustrated with numerical examples.
Źródło:: Reports on Geodesy and Geoinformatics; 2018, 106; 1-7
2391-8365
2391-8152
Pojawia się w:: Reports on Geodesy and Geoinformatics
Dostawca treści:: Biblioteka Nauki