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    Wyświetlanie 1-12 z 12
    Tytuł:
    The suitability of angle measurements made with steep targets for determining spatial positions of points
    Autorzy:
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/224458.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    teodolit prezyzyjny
    tachymetr
    pomiary geodezyjne
    precise theodolites
    geodesic measurements
    angle measurements
    engineering surveying
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 217-223
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimisation of distribution of tie points applied to mutual orientation of stations of a survey system, which uses the method of intersections
    Autorzy:
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/225777.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    industrial measuring systems
    optimisation
    przemysłowe systemy pomiarowe
    optymalizacja
    Źródło:
    Reports on Geodesy; 2011, z. 1/90; 349-354
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of deformations of the skylight construction at the Main Hall of the Warsaw University of Technology
    Autorzy:
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/106872.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    TPS1200
    total station
    analysis of deformation
    skylight construction
    automation
    Warsaw University of Technology
    tachimetr
    analiza deformacji
    konstrukcja świetlika
    automatyka
    Politechnika Warszawska
    Opis:
    The paper presents technology and results of measurements of the steel construction of the skylight of the Main Hall of the Warsaw University of Technology. The new version of the automated measuring system has been used for measurements. This system is based on Leica TCRP1201+ total station and the TCcalc1200 software application, developed by the author, which operates on a laptop computer connected with the total station by the wire. Two test measurements were performed. Each of them consisted of cyclic measurement using the polar method, from one station; points located on the skylight construction, as well as control points located on concrete, bearing poles, were successively measured. Besides geometrical values (such as Hz, V angles and the slope distance D), the changes of temperature and atmospheric pressure, were also recorded. Processed results of measurements contained information concerning the behaviour of the skylight; asymmetry of horizontal displacements with respect to the X axis have been proved. Changes of parameters of the instrument telescope and changes of the instrument orientation were also stated; they were connected with changes of the temperature. The most important results of works have been presented in the form of diagrams.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2014, 97; 35-46
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Testing the constancy of the target axis with a change in focusing in precise theodolites and electronic tacheometers
    Autorzy:
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/224438.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    oś celowa
    teodolit precyzyjny
    tachymetr elektroniczny
    pomiary geodezyjne
    target axis
    precise theodolites
    electronic tacheometer
    engineering surveying
    Opis:
    The obtained measurement results show that for short targets of a few metres long, position changes of the target axis are considerable and even come close to lc (TC1610). Even in the case of the telescopes of precise T 2002 theodolites geared for close object measurements, target axis vacillations almost amount to 40cc. The course of vertical changes in the target axis vacillations is quite distinctive/typical/unusual/interesting? For all tested instruments the character of these changes was very similar. It is a phenomenon which is difficult to explain in a clear fashion. It should be also noted that the greatest changes take place with short targets up to about 10 m. Vacillations of the target axis above this length are considerably smaller and generally do not exceed 10cc. Although target axis movements expressed in terms of angular units are significant, their influence on accurate location of a point position is slight and does not exceed (especially for the horizontal component) a few hundredths millimeters. In spite of this changes in the target axis should be taken into consideration in designing high precision angular measurements for small objects.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 211-216
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adjustment of observation accuracy harmonisation parameters in optimising the network’s reliability
    Autorzy:
    Nowak, E.
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/106870.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    network reliability
    accuracy harmonisation
    niezawodność sieci
    harmonizacja dokładności
    Opis:
    Appropriate precision and low cost are the basic conditions that have to be fulfilled by a project of a geodetic network. Reliability, translating into the ability to detect gross errors in the observations and higher certainty of the obtained point position, is an important network characteristic. The principal way to provide appropriate network reliability is to acquire a suitably large number of redundant observations. Optimisation of the observation accuracy harmonisation procedure allowing for the acquisition of an appropriate level of reliability through modification of the observation a priori standard deviations is the focus of this study. Parameterisation of the accuracy harmonisation is proposed. Furthermore, the influence of the individual parameter operation on the effectiveness of the harmonisation procedure is tested. Based on the results of the tests an optimal set of harmonisation parameters which guarantees the maximal efficiency of the harmonisation algorithm is proposed.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2018, 105; 53-59
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of stability of precise geodetic instruments used in deformation monitoring
    Autorzy:
    Woźniak, M.
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/106803.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    geometry of instrument’s axis
    instrument stand
    deformation monitoring
    geodetic control measurements
    geometria osi instrumentu
    stojak na instrumenty
    monitorowanie deformacji
    pomiary kontrolne geodezyjne
    Opis:
    Monitoring systems using automated electronic total stations are an important element of safety control of many engineering objects. In order to ensure the appropriate credibility of acquired data, it is necessary that instruments (total stations in most of the cases) used for measurements meet requirements of measurement accuracy, as well as the stability of instrument axis system geometry. With regards to the above, it is expedient to conduct quality control of data acquired using electronic total stations in the context of performed measurement procedures. This paper presents results of research conducted at the Faculty of Geodesy and Cartography at Warsaw University of Technology investigating the stability of “basic” error values (collimation, zero location for V circle, inclination), for two types of automatic total stations: TDA 5005 and TCRP 1201+. Research provided also information concerning the influence of temperature changes upon the stability of investigated instrument’s optical parameters. Results are presented in graphical analytic technique. Final conclusions propose methods, which allow avoiding negative results of measuring tool-set geometry changes during conducting precise deformation monitoring measurements.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2017, 104; 79-90
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Control network reliability reconstruction for Zatonie dam
    Autorzy:
    Nowak, E.
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/106901.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    network reliability
    accuracy harmonisation
    dam control network
    Zatonie dam
    niezawodność sieci
    harmonizacja dokładności
    tama Zatonie
    Opis:
    Absolute horizontal displacements are an important element of dam safety level assessment. Appropriate design of measurement network is a prerequisite for the acquisition of displacement values that meet the reliability requirements. A network of this kind, apart from ensuring the required precision of displacement determination, should be characterised by reliability allowing for elimination of gross errors in the results of geodetic surveys. This study aims to propose a method to improve reliability characteristic of surveying network used for horizontal displacement identification in Zatonie dam. The desired effect (increase in the network’s reliability) is obtained by the authors in two stages. The first stage concerns expansion of the existing network by addition of three free stations. As the obtained effect did not prove to be satisfactory, in the second stage so called observation accuracy harmonisation was carried out, which optimally utilises the reliability potential of the measurement construction. In order to successfully carry out the harmonisation, a modification to the procedure’s algorithm had to be introduced. A design of a network ensuring detection of a gross error in any given observation was obtained as the result of the performed actions.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2018, 105; 1-5
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring of the wut grand hall roof in conditions of high temerature changes
    Autorzy:
    Woźniak, M.
    Odziemczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/224691.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    geometria dachu
    pomiary geometryczne
    Politechnika Warszawska
    geometry of roof
    geometrical measurements
    Warsaw University of Technology
    Opis:
    Geodetic control measurements of changes in geometry an object should satisfy high accuracy and reliability. New techeometers equipped with Automatic Target Recognition automatically moves the telescope to the prism and supports control point measurements. The accuracy of using an ATR system and the stability of an instrument in precise measurements were present the results of monitoring measurement were controlled in laboratory and field conditions. This paper will present the results of monitoring measurements with a Leica TDA 5005 during the investigations of roof geometry in conditions of high temperature changes.
    Źródło:
    Reports on Geodesy; 2009, z. 1/86; 105-110
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of practical and theoretical accuracy of wireless indoor positioning system Ubisense
    Autorzy:
    Woźniak, M.
    Odziemczyk, W.
    Nagórski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/106897.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    positioning systems
    RTLS
    point tracking
    systemy pozycjonowania
    punkt śledzenia
    Opis:
    This paper presents the accuracy investigation results and functionality of Ubisense RTLS positioning system. Three kinds of studies were conducted: test of calibration accuracy, analysis of theoretical accuracy of the coordinates determination as well as accuracy measurements in field conditions. Test of calibration accuracy was made with several different geometric constellation of reference points (tag positions). We determined changes of orientation parameters of receivers and disturbance of positioning points coordinates against chosen reference points constellations. Analysis of theoretical accuracy was made for several receivers spatial positions and their orientations. It allowed to indicate favourable and unfavourable measurement area considering accuracy and reliability. Real positioning accuracy of the Ubisense system was determined by comparison with coordinates measured using precise tacheometer TCRP1201+. Results of conducted experiments and accuracy analysis of test measurement were presented in figures and diagrams.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2013, 95; 36-48
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of short-term roof structure deformations using geodetic methods
    Autorzy:
    Woźniak, M.
    Odziemczyk, W.
    Jastrzębski, S.
    Wojciechowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/225119.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    deformacja konstrukcji
    konstrukcja dachu
    pomiary
    deformation structures
    roof structures
    measurements
    Opis:
    The article contains the results of the measurements of the Warsaw University of Technology Main Hall roof deformations under various conditions. These results were obtained autornatically using precise motorized tacheometres TDA5005 and TCRP2002. In this work we compare the vertical components obtained with tacheometric measurements to the results of geometric leveling for chosen control points. The aim of this research was the assessment of the usefulness of the proposed monitoring method to determine structural deformations.
    Źródło:
    Reports on Geodesy; 2008, z. 1/84; 105-110
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy analysis of a wireless indoor positioning system using geodetic methods
    Autorzy:
    Wagner, P.
    Woźniak, M.
    Odziemczyk, W.
    Pakuła, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/106721.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    Ubisense
    Real Time Location System
    RTLS
    indoor positioning
    system lokalizacji czasu rzeczywistego
    lokalizacja obiektu
    pozycjonowanie obiektu
    Opis:
    Ubisense RTLS is one of the Indoor positioning systems using an Ultra Wide Band. AOA and TDOA methods are used as a principle of positioning. The accuracy of positioning depends primarily on the accuracy of determined angles and distance differences. The paper presents the results of accuracy research which includes a theoretical accuracy prediction and a practical test. Theoretical accuracy was calculated for two variants of system components geometry, assuming the parameters declared by the system manufacturer. Total station measurements were taken as a reference during the practical test. The results of the analysis are presented in a graphical form. A sample implementation (MagMaster) developed by Globema is presented in the final part of the paper.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2017, 104; 1-19
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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