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Ocena kakovosti določitve položaja z različnimi trajanji opazovanj pri RTK-metodi izmere GNSS : diplomska naloga
Škrabar, Aljaž (Author), Pavlovčič Prešeren, Polona (Mentor) More about this mentor... This link opens in a new window, Kuhar, Miran (Co-mentor)

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Abstract
V nalogi smo preverili kakovost določitve položajev točk v koordinatnem sistemu ETRS89 z različnimi dolžinami trajanja opazovanj pri RTK-metodi izmere GNSS. Dolžine so se nanašale na interval od 5 sekund pa vse do 5 minut po kakovostno izvedeni inicializaciji. Postopek ugotavljanja razlik je potekal podobno, kot poteka preizkus RTK-instrumentov po standardu ISO17123-8. Na delovišču v bližini Trbovelj smo vzpostavili mrežo treh točk, katerih položaje smo najprej določili s statično izmero GNSS z naknadno obdelavo opazovanj. Podatke opazovanj GNSS statične metode izmere smo obdelali na več načinov z navezavo na različne stalne postaje državnega omrežja SIGNAL: Trebnje, Celje, Ljubljano ter z navezavo na virtualno referenčno stojišče VRS. Pri tem smo ugotavljali, kolikšen je najkrajši časovni interval izvedbe opazovanj za kakovostno določitev položaja s statično metodo izmere. Nadalje smo položaje istih točk določili z RTK-metodo izmere ob uporabi instrumenta Leica 900. Položaje smo določili večkrat z neodvisnimi inicializacijami in z različnimi dolžinami trajanja opazovanj po inicializaciji. Ugotovili smo, da v primeru uporabe instrumenta Leica 900 pri RTK-določitvi položaja ni bistvenih razlik, če izvajamo nadaljnje meritve na detajlnih točkah krajši ali daljši čas po izvedeni inicializaciji.

Language:Slovenian
Keywords:geodezija, diplomska naloga, UNI, GIG, koordinatni sistem ETRS89, RTK-metoda izmere, statična metoda izmere, SIGNAL, VRS, instrument Leica 900
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2015
Publisher:[A. Škrabar]
Number of pages:XIII, 26 str.
Place:Ljubljana
COBISS.SI-ID:7169377 Link is opened in a new window
Views:1035
Downloads:281
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Secondary language

Language:English
Title:Determination of position quality by RTK-GNSS method using different occupation durations
Abstract:
In this graduation thesis we have checked the quality of RTK-point positioning in the coordinate system ETRS89 with various occupation durations. The occupation durations were related to the interval from 5 seconds and up to 5 minutes after the successful initialization. The process of identifying differences has been performed similar to the methodology of RTK-instrument testing according to the standard ISO17123-8. First we have established a three-point network at the area of Trbovlje and further performed static GNSS measurements. By several different post-processing strategies we have acquired coordinates that were used as the reference for further studies. We have used observations from three permanent stations of the national continuously operating reference station network SIGNAL, i.e. Trebnje, Celje, Ljubljana and finally also VRS station to acquire final coordinates from post-processing. Meanwhile we have tried to find out the minimal occupation duration for quality baseline determination from fast-static measurements. Positions of the three points were determined using Leica 900 instrument for RTK-method performance. Positions were determined by several independent initializations and by different occupation durations. We have found that in the case of the instrument Leica 900 there are no significant differences between positions of detail points, acquired from different occupation durations after the initialization.

Keywords:coordinate system ETRS89, RTK point positioning, GNSS, static point positioning, SIGNAL, VRS, instrument Leica 900

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