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    Wyświetlanie 1-7 z 7
    Tytuł:
    Investigation of the accuracy of geodetic measurements using reflectorless techniques
    Autorzy:
    Woźniak, M.
    Jastrzębski, S.
    Wojciekowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/224683.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    technika bezlustrowa
    tachimetry
    pomiary geodezyjne
    reflectorless techniques
    tacheometers
    surveing
    Opis:
    This paper presents the results of investigation of geometry accuracy using reflectorless techniques. Experimental measurenents were carried out the polygon using new tacheometers and a monitoring application program. The results of experimental measurements were analyzed and presented graphicall in Surfer 8. Contour maps and isometric projections of the surface of imperfection are elements of the present study. It presents the results of investigation of measurements accuracy in geometry according to various geometry conditions.
    Źródło:
    Reports on Geodesy; 2009, z. 1/86; 97-103
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The attempt to use levelling rods for testing metric properties of surveying instruments, which are used for reflectorless distance measurements
    Autorzy:
    Świerczyńska, E.
    Kołakowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/106769.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    terrestrial laser scanning
    reflectorless measurements
    accuracy of measurements
    skanowanie laserowe naziemne
    pomiary bezlustrowe
    dokładność pomiarów
    Opis:
    This paper presents results of two experimental cycles of measurements performed with the use of the terrestrial laser scanner Z+F IMAGER 5006h and the reflectorless tacheometer Leica TPS 1202. These tests aimed at determination of metric properties of surveying instruments, which are used for reflectorless distance measurements and which are often applied to project the geometry of objects. In the course of research works issues influencing the reflection of a laser beam by the measured surface, as well as their influence on the data quality. In order to analyse metric properties of applied instruments, levelling rods were used as test fields of geometrically specified division. It was stated basing on the performed analyses, that the influence of the incidental angle of a laser beam on the accuracy of reflectorless measurements is included within the limits of the error of distance measurements of a given instrument. However, the uniform trend of increasing differences between measured values and the nominal value may be noticed, together with the increase of the incidental angle of the axis of collimation on the measured surface of the test field.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2014, 96; 38-54
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reflectorless measurements assessment of the suitability and accuracy of the measurements
    Autorzy:
    Latos, D.
    Baszkiewicz, K.
    Nykiel, G.
    Pecyna, K.
    Bielecka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/225579.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    pomiary geodezyjne
    urządzenia pomiarowe
    measurements
    measuring devices
    Opis:
    Measurement technics in geodesy have strongly intensified their development towards the remote methods of acquiring information in recent years. This trend can be observed for example with reflectorless measurement of distance, the method which is accessible in more and more of new tachymeters. Manufacturers compete with solutions that are able to provide larger range of measurement, while at the same time the accuracy of it is still adequate enough for majority of geodetic jobs. Unfortunately, the parameters that describe the reflectorless measurement published in the specification of the instruments refer to measurements, which were made in the strictly defined conditions, with the use of specific background materials, accessibility of which is hardly to repeat in the real, everyday work in the field.
    Źródło:
    Reports on Geodesy; 2011, z. 1/90; 241-247
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigating the accuracy of spatial coordinates of modeled HDS target center depending on the range from terrestrial laser scanner measurements
    Autorzy:
    Hejbudzka, K.
    Dumalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/225524.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    skaner laserowy naziemny
    dokładność punktu 3D modelowanego
    terrestrial laser scanner
    accuracy of modeled 3D point
    Opis:
    The paper presents an analysis of the accuracy of the position of High Definition Survey (further HDS) target center in three dimensional space. Precise position of the target center has a significant impact on georeference, the registration accuracy of several point clouds into a complete 3D point cloud and, what is more, on the accuracy of the final results. The measurements were made with the use of Leica Scanstation. During the experiment 15 scans of the fixed target, for each of three distances, were carried out. The results were conducted in two ways: using scanner's software - the Cyclone, and the author's program written in Python. The obtained results were the basis for statistical analysis, namely a confidence ellipsoid in 3D space.
    Źródło:
    Reports on Geodesy; 2011, z. 1/90; 157-164
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Method of network reliability analysis based on accuracy characteristics
    Autorzy:
    Łapiński, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/225644.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    pomiary geodezyjne
    measurements
    Opis:
    Measurements of structures must be precise and accurate as they affect the quality of the final result of geodetic tasks. In some cases there is a risk of committing a gross error. Diagnostic analyses may allow such an observation in to the adjustment and estimation of unknown parameters. The paper presents results of network deformation and robustness analysis based on the characteristics of network accuracy and reliability. The maximum undetectable error that may occur in an individual observation constitutes the source of deformation. The method tested in the present paper is proposed in Prószyński and Parzyński (2009). The paper evaluates theoretical relationships and their utility for analyses of large geodetic networks. Additionally, the paper attempts to transfer the presented relationships to the case of free adjustment, which was not included in theoretical derivations in the paper mentioned above. The research has been conducted using a computer generated 2D linear-angular network. The analysis focuses on the results of network deformation, depending on the assumed reference system. Moreover, an attempt has been made to modify the proposed method of network reliability analysis for the case of free adjustment.
    Źródło:
    Reports on Geodesy; 2011, z. 1/90; 265-270
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The accuracy investigation of point coordinates’ determination using a fixed basis for high-precision geodesy binding
    Autorzy:
    Litynskyi, Volodymyr
    Litynskyi, Svyatoslav
    Vivat, Anatolii
    Fys, Mykhailo
    Brydun, Andrii
    Powiązania:
    https://bibliotekanauki.pl/articles/106849.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    optimization of linear-angular measurements
    linear-angular measurements
    coordinates determination
    accuracy of coordinates determination
    optymalizacja pomiarów liniowo-kątowych
    pomiary liniowo-kątowe
    określanie współrzędnych
    dokładność określenia współrzędnych
    Opis:
    Modern scanners can perform terrestrial topographic survey with resolution of 1 cm and accuracy of 2 mm in just a few minute‘s time, from the distance of up to 100 meters. However, for surface topographical surveying of large territories or complex industrial objects, it is necessary to conduct geodetic traverses and perform their binding to the points of the geodesic basis. One method of coordinate transferring during surveying is by using the method of inverse linear-angular intersection, which involves the measuring of the respective sides S1, S2 and the β angle between them. This method is more precise than the classical one, which usually contains centring and reduction errors. The linear-angular intersection method can also be used for many applications in engineering geodesy, for laying geodetic traverses, and for binding to the wall based points of ground-surveying.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2019, 107; 19-23
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Examining coherence of accuracy tests of total station surveying and geodetic instruments based on comparison of results of complete test procedures according to ISO 17123
    Autorzy:
    Owerko, T.
    Strach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/225372.pdf
    Data publikacji:
    2009
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    pomiary
    geodezja
    urządzenia geodezyjne
    measurements
    geodesy
    geodetic instruments
    Opis:
    Total Station Instruments can be qualified as the equipment whose accuracy parameters can be tested with measuring and calculation procedures, pursuant to part 3, 4 and 5 of ISO 17123. The present paper aims to study coherence of accuracy results obtained, on the one hand, by combining parts 3, 4, and part 5, on the other hand. The tests were carried out based on complete test procedures with test bases located on the premises of AGH University and city meadow in Krakow. The following instruments were tested: Trimble S6, Leica TCRA 1101 and Topcon GPT 7500.
    Źródło:
    Reports on Geodesy; 2009, z. 2/87; 291-299
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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