Časovno odvisne geodetske mreže in koordinatni sistemi : doktorska disertacija

Sterle, Oskar (author), Stopar, Bojan (mentor)

V nalogi prikazujemo teoretični in praktični vidik vzpostavitve novega koordinatnega sistema na osnovi ponovljenih opazovanj GNSS, ki se definira v petih korakih. V prvem koraku določimo natančne koordinate geodetskih točk, ki jih v drugem koraku uskladimo z globalnim koordinatnim sistemom. V globalnem koordinatnem sistemu, v tretjem koraku, za geodetske točke, na osnovi ponovljenih izmer GNSS, določimo koordinate v referenčni epohi s pripadajočimi vektorji hitrosti. Vzpostavitev lastnega koordinatnega sistema predstavlja četrti korak, ki ga izvedemo s časovno odvisno prostorsko transformacijo. Na osnovi ocenjenih vektorjev hitrosti v novem koordinatnem sistemu lahko v zadnjem petem koraku, s kolokacijo po metodi najmanjših kvadratov, določimo še geokinematični model obravnavanega območja. Praktični del naloge smo izvedli na osnovi ponovljenih geodetskih opazovanj GNSS na območju Slovenije in njene okolice v zadnjih 20-ih letih. Opazovanja smo pridobili tako na točkah pasivnega omrežja, kot tudi na stalno delujočih postajah. Poleg prikaza vzpostavitve koordinatnega sistema, smo analizirali tudi natančnost in točnost že vzpostavljenega koordinatnega sistema na osnovi opazovanj GNSS, ki je v Sloveniji v uradni uporabi že od leta 2008.

• Language: Slovenian
• Keywords: grajeno okolje, gradbeništvo, disertacije, GPS, metoda PPP, koordinatni sistem, koordinatni sestav, geodetski datum
• Work type: Doctoral dissertation
• Typology: 2.08 - Doctoral Dissertation
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [O. Sterle]
• Year: 2015
• Number of pages: XXX, 194 str., [53] str. pril.
• PID: 20.500.12556/RUL-73264
• COBISS.SI-ID: 7248737
• Publication date in RUL: 30.10.2015

STERLE, Oskar, 2015, Časovno odvisne geodetske mreže in koordinatni sistemi : doktorska disertacija [online]. Doctoral dissertation. Ljubljana : O. Sterle. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=73264

Secondary language

• Language: English
• Title: Time dependent geodetic networks and coordinate systems

Abstract

This thesis represents the theoretical and practical aspects of establishing a new coordinate system on the basis of repeated GNSS observations, which is defined in five steps. First, we determine the precise coordinates of geodetic stations that are in the second step transformed to a global coordinate system. In the third step we determine the coordinates of geodetic stations for the reference epoch with their corresponding velocity vectors on the basis of repeated GNSS observations. The fourth step is establishing a proper coordinate system performed using a time-dependent spatial transformation. On the basis of the estimated velocity vectors in the newly established coordinate system, the geokinematic model of the corresponding territory can be determined with the least-squares collocation in the final, fifth step. The practical part of the thesis is based on repeated GNSS observations in the territory of Slovenia and its surroundings over the last 20 years. The GNSS observations were obtained for the geodetic stations of the passive GNSS network as well as for permanent GNSS stations. Besides, our work included the establishment of a new coordinate system, and an analysis of the precision and accuracy of the already established coordinate system based on GNSS observations, which has been officially used in Slovenia since 2008.

• Keywords: building environment, civil engineering, thesis, PPP method, coordinate system, coordinate frame, geodetic datum, estimation of spalling