Temat: geometrical error - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Identification and correction of coordinate measuring machine geometrical errors using lasertracer systems
Autorzy:: Gąska, A.
Gruza, M.
Gąska, P.
Karpiuk, M.
Sładek, J.
Powiązania:: https://bibliotekanauki.pl/articles/103146.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: LaserTracer
coordinate measuring machine
geometrical error
Opis:: LaserTracer (LT) systems are the most sophisticated and accurate laser tracking devices. They are mainly used for correction of geometrical errors of machine tools and coordinate measuring machines. This process is about four times faster than standard methods based on usage of laser interferometers. The methodology of LaserTracer usage to correction of geometrical errors, including presentation of this system, multilateration method and software that was used are described in details in this paper.
Źródło:: Advances in Science and Technology. Research Journal; 2013, 7, 20; 17-22
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Finding deformation of the stright rail track by GNSS measurements
Autorzy:: Koc, W.
Chrostowski, P.
Specht, C.
Powiązania:: https://bibliotekanauki.pl/articles/320893.pdf
Data publikacji:: 2012
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: railway track
geometrical layout
satellite surveying GPS
ASG-EUPOS network
coordinates determining
error correction
Opis:: In 2009, at the Gdansk University of Technology and Polish Naval Academy there has been carried out, for the first time, continuous satellite surveying of railway track by the use of the relative phase method based on the Polish Active Geodetic Network ASG-EUPOS and RTK (GPRS) real time service - NAVGEO. The analysis indicated strong connection between location of GNSS receiver and accuracy of position determination, the horizon obstruction deteriorated accuracy and impacts terrain obstructions, the precise GPS planning process on the position solution. It can be stated that implemented measuring technique opens a whole new perspective on applied research. As proved, it enables very precise determination of basic data definition for railway line modernization design. On-going research works focuses on the GNSS multi-receivers platform evaluation for projecting and stocktaking. Analyses also focused on the values of deviations of transverse position XTE (Cross Track Error). In order to eliminate the influence of random measurement errors and to obtain the coordinates representing the actual shape of the track, the XTE variable was performed by different statistical and regression methods (least square method - LSM, weighted least squares - WLS, Linear Chebyshev low-pass filtering and fast Fourier transform). The paper presents the result of trial analyses realized on the newly constructed (rectilinear) and old-used up railway lines. The authors were searching the methods for filtering random measurement GNSS errors different from instantaneous shape deformations of the straight rail track.
Źródło:: Annual of Navigation; 2012, No. 19, part 1; 91-104
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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