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    Wyświetlanie 1-14 z 14
    Tytuł:
    Displacement monitoring of engineering objects using GPS-RTK technique
    Autorzy:
    Szpunar, R.
    Walo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/224598.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    technika GPS-RTK
    monitoring obiektów inżynierskich
    GPS-RTK technique
    monitoring of engineering objects
    Opis:
    Determination of the geometrical characteristic of engineering objects is necessary to thier safa exploitation. Modern terrestrial and satellite measuring techniques make possible the permanent monitoring of the objects. The techniques make also possible Poster presents a concepr how to take advantage of kinematics satellite GPS-RTK measurements and FIR filtres to determine of few millimetres displacement.
    Źródło:
    Reports on Geodesy; 2007, z. 2/83; 83-87
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality Indicator for Ionospheric Biases Interpolation in the Network RTK
    Autorzy:
    Próchniewicz, D.
    Walo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/225145.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    quality indicator
    network RTK
    ionosphere
    wskaźnik jakości
    sieć RTK
    jonosfera
    Opis:
    This paper presents the methodology and performance of an ionospheric quality indicator in the Network RTK. A new index called Zenith Ionospheric Residual Interpolation Uncertainty, which is an extension of the existing indicator is proposed and evaluated using the reference station test network. The dataset used for this study was collected during ionospheric storm period in order to test the indicator during disturbed ionospheric conditions. The test results show that the proposed indicator provides a realistic prediction of ionospheric interpolation accuracy and can be used to predict the Network RTK performance at rover location.
    Źródło:
    Reports on Geodesy; 2012, z. 1/92; 7-21
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of short-terms height changes of the Hans Glacier using quasi-continuous GPS observations
    Autorzy:
    Walo, J.
    Adamek, A.
    Puczko, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/225003.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    GPS
    satelita GPS
    system pozycjonowania obiektów
    lodowiec Hans
    wysokośc lodowca
    pomiary geodezyjne
    GPS satellite
    Global Positioning System
    Hans Glacier
    glacier height
    engineering surveying
    Opis:
    The analysis of the measurement results exemplifies very valuable information about the glacier behavior which glaciologists need to understand phenomena occurring on the glacier in different seasons. Beside the experiences collected during this experiment it will be the background to design similar investigations from survey technology and methodology point of view. Basing on these results and experiment analysis we can draw some conclusions: - In the period of the experiment the glacier surface felt down as much as 2 meters. This is the natural tendency and consequences of flowing down the glacier to the fiord and his ablation. - In the figures we could notice wavy nature of the phenomenon of the glacier surface which probably is connected with topography of the fiord bottom, ocean tides affected on the glacier front and some processes connected with the ablation water delivery to the glacier bed. This problem requires a detailed study based on environmental data. - The results of determined heights were periodically disrupted by atmospheric conditions (snowing, wind). - The GPS data used to follow the vertical velocity of the glacier surface let us to monitor the glacier with height accuracy. Also the automation of the survey and post-processing is possible. - There are some disadvantages of using this monitoring technology in surveys: one point of observations, influence of atmospheric conditions on the results of surveys, periodically hard access to equipment and not good enough way of installation of the satellite antenna on the glacier (ablation pole).
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 367-373
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control network analysis of the dam "Wióry"
    Autorzy:
    Walo, J.
    Szpunar, R.
    Woźniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/225005.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    zapora ziemna
    sieć kontrolna
    Wióry
    pomiary geodezyjne
    earth dam
    control network
    engineering surveying
    Opis:
    The obtained results of the test measurements in the control network of the dam Wióry show that combined usage of length measurements and GPS observations enables to obtain high accuracy and reliability in defining point coordinates. The real determination accuracy of checkpoint displacements in this type of networks is at the level of (plus minus) 2-3mm. However, it should be added that in small networks covering an area up to 1 km in radius, classical measurements (most of all, length measurements) enable to obtain higher accuracies in determining point coordinates, obviously on condition that the net structure is well-designed and length measurement is possible. Having analyzed the obtained results, one can also formulate the following conclusions: - the assumed structure of a modified test network shows effective accuracy both for EDM measurements and GPS observations, - satellite measurements enable combined and direct observation of points between which there is no sight line. It is especially important in the case of reference points which are usually located around the monitored object, and it is rarely possible to link them by means of classical measurements; - GPS measurements make it possible to check the monitored network independently, at least limiting the incidence of major and systematic errors in processing the results and defining displacement values; so GPS observations may, in the case of small control networks, be treated as control measurements made periodically (e.g. every year); - accuracy assessment made for TDA5005 tachymeter observations even in the case of considerable target inclinations, made by means of standard reflectors, attested reflexive foil and CCR fulfills monitoring requirements of specific point (targets), enabling to obtain an accuracy of the (plus minus) 0.5 mm range in relation to reference points; - linear measurements in the test network of Wiory, made by means of a TDA5005 tachymeter and high precision reflectors can be accomplished within 2-3 days.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 376-380
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the mutual location of mobile objects using the ASG-EUPOSS system
    Autorzy:
    Szpunar, R.
    Próchniewicz, D.
    Walo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/225350.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    AGS-EUPOS
    GNSS
    NAWGEO
    nawigacja satelitarna
    kinematyka
    satellite navigation
    kinematics
    Źródło:
    Reports on Geodesy; 2009, z. 2/87; 391-396
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The feasibility of applying automatic target recognition in trigonometric levelling
    Autorzy:
    Próchniewicz, D.
    Szpunar, R.
    Walo, J.
    Pachuta, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/225056.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    niwelacja trygonometryczna
    niwelacja precyzyjna
    tachymetr elektroniczny
    pomiary geodezyjne
    trigonometric levelling
    electronic tacheometer
    engineering surveying
    Opis:
    The obtained results of the field experiments fully confirmed the feasibility of applying ATR systems in trigonometric levelling. In the tested span experiment at Józefosław, the value difference of height differences obtained with precise geometric levelling and the mean value of all measurements differed by a mere 2.7 mm, and for midnight measurements - it did not exceed 1 mm. The measurements made in the Pieniny Range were also successful in the case of observation compatibility and limiting the impact of atmospheric refraction on measurement results. Unfortunately, the comparison of the obtained height differences with those of 5 years ago showed considerable discrepancies stemming from benchmark subsiding rather than technological accuracy of trigonometric levelling. To verify this thesis it is planned to repeat trigonometric measurements on the testing ground in the Pieniny and to carry out control measurements by means of precise geometric levelling. Summing up, one can note that the use of tacheometers along with ATR enables to automate measurements and related quasi-continuous observations. These traits enable moreover: - to increase the number of observations, and what follows, increase accuracy and reliability of the zenithal length determined, - to average measurements made over a long period, which enables to undermine the influence of atmospheric refraction on the value of height difference measured, - to make observations in different atmospheric conditions, including nighttime when the atmosphere is stable, - to eliminate personal errors of the observer, - to analyze conducted observations in real time.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 267-273
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of the ASG - EUPOS system NAVGEO service in monitoring displacement
    Autorzy:
    Próchniewicz, D.
    Szpunar, R.
    Walo, J.
    Patucha, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/225384.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    AGS-EUPOS
    RTK
    NAWGEO
    GNSS
    Źródło:
    Reports on Geodesy; 2009, z. 2/87; 337-342
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Local geodynamic network in the Pieniny Klippen Belt. Results of seven GPS measurement epochs
    Autorzy:
    Walo, J.
    Czarnecki, K.
    Olszak, T.
    Pachuta, A.
    Szpunar, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/224450.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    Pieniny
    badania geodynamiczne
    geodynamika
    GPS
    system pozycjonowania obiektów
    Pieniny Klippen Belt
    geodynamic investigations
    geodynamics
    Global Positioning System
    Opis:
    The results or seven GPS observational campaigns have demonstrated mutual approaching trend or the Magura Nappe and the Podhale Flysh. Such a trend was disturbed during the period or 1995-2001 when the dam on the Dunajec-river was constructed and artificial lake was created. A hypothesis saying that the filling or the lake resulted in temporarily driving apart the Magura Nappe and Podhale Flysh has been presumed. After 2001 the tectonic structures "started to approach each other". The control points within the Iimits or the Pieniny Klippen Belt have demonstrated oscillatory changes or coordinates in the range of ±15 mm. The results or the last observation epoch show a disturbance or above mentioned trend. It would be due to earthquake in November 2004 that happened near the test field. This hypothesis should be verified next years by the following observational campaigns.
    Źródło:
    Reports on Geodesy; 2006, z. 1/76; 169-172
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unified gravimetric reference frame for Polish IGS/EPN stations and geodynamic test fields
    Autorzy:
    Walo, J.
    Olszak, T.
    Pachuta, A.
    Próchniewicz, D.
    Szpunar, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/225691.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    pomiary geodezyjne
    pomiary grawimetryczne
    surveys
    gravity measurements
    Źródło:
    Reports on Geodesy; 2010, z. 1/88; 105-113
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring of Hans Glacier movement dynamics (Hornsund Sw Spitsbergen, Svalbard)
    Autorzy:
    Walo, J.
    Puczko, D.
    Adamek, A.
    Węzka, K.
    Malinowski, Z.
    Rajner, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/224448.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    ablacja
    chłodzenie ablacyjne
    Spitsbergen
    ruch lodowca
    lodowiec
    stacja polarna
    ablation
    movement of glacier
    Hans Glacier
    glacier
    polar station
    Opis:
    Fast and exact GPS measurements are independent from weather and season of the year. For achieving reliable results, survey should be conducted at least once a month and at least twice a month in summer season (June-September). GPS RTK is suggested for pole movement determination. In case of real-time corrections limited availability (i.e. screening by mountains) using Rapid Static is a good choice. To minimize multipath error antenna should be placed at least 0,5m eccentric to pole and at 1 m height. Ablation pole movement vectors of Hans glacier indicate few relations. Most important feature is speed being about 10 times greater in foremost zone of glacier than in lateral parties of glacier. Measurements of lateral profile indicate that, accordingly to expectations, surface speed of glacier is greater in middle axis comparing to the edges or glacier.
    Źródło:
    Reports on Geodesy; 2006, z. 1/76; 173-179
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geodynamical investigations in the Pieniny Mountain in 1994-2010
    Autorzy:
    Walo, J.
    Pachuta, A.
    Próchniewicz, D.
    Szpunar, R.
    Olszak, T.
    Barlik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/224922.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    pomiary grawimetryczne
    Pieniny
    gravimetric measurements
    Pieniny Mts.
    Opis:
    Geodynamical investigation in the Pieniny Mountain (south of Poland) were carried out since the 1960s. They contained levelling, gravimetric measurements and distance observations in horizontal network. The results reveled vertical and horizontal movements of the crust and periodic changes in gravity. In 1994-1995 horizontal network was adapted to perform GPS observations and they were carried out with leveling, gravimetric and EDM observations. In 1990s, the Dunajec river dam and the water resorvoirs in Czorsztyn and Sromowce Wyżne have been built. This has a new aspect in investigations releted to the effect of tectonic movements on the dam. Taking that into account, the study was revived, after six year break, in 2001. The investigations, which contain GPS, gravimetric and leveling observations, have been carried out every year. In this paper the result of horizontal displacement obtained from GPS measurement as well as gravity changes in 1994-2010 period are presented and yields linear trend in north-east direction less than 1 mm/year.
    Źródło:
    Reports on Geodesy; 2011, z. 2/91; 29-36
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scientific expeditions to Antarctic and Spitsbergen with the participation of scientists from Faculty of Geodesy and Cartography, the Warsaw Universitety of Technology (WUT)
    Autorzy:
    Pachuta, A.
    Walo, J.
    Adamek, A.
    Rajner, M.
    Węzka, K.
    Próchniewicz, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/225080.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    wyprawy naukowe
    Politechnika Warszawska
    scientific expedition
    Warsaw University of Technology
    Źródło:
    Reports on Geodesy; 2010, z. 2/89; 21-30
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Scientific expeditions to Svalbard, organized by the Faculty of Geodesy and Cartography, the Warsaw University of Technology (WUT)
    Autorzy:
    Pachuta, A.
    Walo, J.
    Adamek, A.
    Woźniak, M.
    Rajner, M.
    Węzka, K.
    Próchniewicz, D,
    Powiązania:
    https://bibliotekanauki.pl/articles/224476.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    prace geodezyjne
    wyprawa naukowa
    zbiornik paliwa
    wyprawa arktyczna
    Wydział Geodezji i Kartografii PW
    pomiary geodezyjne
    geodetic expeditions
    expedition
    Faculty of Geodesy and Cartography
    fuel tank
    engineering surveying
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 243-250
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geodetic and geodynamic studies at Department of Geodesy and Geodetic Astronomy WUT
    Autorzy:
    Brzeziński, A.
    Barlik, M.
    Andrasik, E.
    Izdebski, W.
    Kruczyk, M.
    Liwosz, T.
    Olszak, T.
    Pachuta, A.
    Pieniak, M.
    Próchniewicz, D.
    Rajner, M.
    Szpunar, R.
    Tercjak, M.
    Walo, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/106807.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    physical geodesy
    satellite measurement techniques
    GNSS meteorology
    geodynamic studies
    geodezja fizyczna
    technika pomiarów satelitarnych
    meteorologia GNSS
    badania geodynamiczne
    Opis:
    The article presents current issues and research work conducted in the Department of Geodesy and Geodetic Astronomy at the Faculty of Geodesy and Cartography at Warsaw University of Technology. It contains the most important directions of research in the fields of physical geodesy, satellite measurement techniques, GNSS meteorology, geodynamic studies, electronic measurement techniques and terrain information systems.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2016, 100; 165-200
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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