Primerjava različnih modelov geoida na območju Slovenije : magistrsko delo

Petovar, Blaž (author), Kuhar, Miran (mentor), Ritlop, Klemen (co-mentor), Koler, Božo (co-mentor)

V magistrskem delu analiziramo različne modele geoida in jih vrednotimo po kakovosti. V analizo vključimo globalne modele EGM2008, XGM2019e, GOCO06s in EIGEN-6S4, regionalna modela EGG2008 in EGG2015 ter državni model SLOAMG_2000 in državno višinsko referenčno ploskev SLO_VRP2016/Koper. Interpolirane vrednosti geoidnih višin iz različnih modelov primerjamo z geoidnimi višinami iz baze kontrolnih točk. Baza kontrolnih točk, ki jo predstavimo v delu, obsega več kot 1000 točk določenih v novem slovenskem višinskem sistemu SVS2010. Rezultate analize predstavimo numerično v obliki preglednic ter grafično v obliki kart potekov, razlik in odstopanj modelov geoida. Višinsko referenčno ploskev SLO_VRP2016/Koper analiziramo še z vidika natančnosti v odvisnosti od normalnih višin točk. Obravnavamo tudi spremembe zaradi različnih modelov plimovanja trdne Zemlje ter njihov vpliv na višine v okviru višinskih sistemov SVS2010 in EVRF2019. V delu opišemo tudi teoretične osnove težnostnega polja Zemlje, normalnega težnostnega polja, višinskih sistemov in geoida ter različnih modelov geoida.

• Language: Slovenian
• Keywords: geoidna višina, geoid, višinski sistemi, plimovanje trdne Zemlje, SLOVRP_2016/Koper, EGG2015, EGM2008, XGM2019e
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [B. Petovar]
• Year: 2021
• PID: 20.500.12556/RUL-130260
• UDC: 528.2(043.3)
• COBISS.SI-ID: 76911875
• Publication date in RUL: 12.09.2021

Secondary language

• Language: English
• Title: Comparison of various geoid models in Slovenia : master thesis

Abstract

In the master thesis we analyze different geoid models and evaluate them by quality. In the analysis we include global models EGM2008, XGM2019e, GOCO06s, EIGEN-6S4, regional models EGG2008, EGG2015, national model SLOAMG_2000 and height reference surface SLO_VRP2016/Koper. We compare interpolated values of geoid heights from different models with geoid heights retrieved from GNSS/leveling control points data set. The data set we use consists of more than 1000 points measured in the new Slovenian height reference system SVS2010. Results of the analysis are presented numerically and graphically in the form of charts and maps. We further analyze the height reference surface SLO_VRP2016/Koper in terms of residuals correlation to points' normal heights. In the end we also research the differences due to different solid Earth tides models and their effect on heights in the SVS2010 and EVRF2019 height systems. In the master thesis we also describe theoretical background about Earth's gravity field, normal gravity field, height systems, geoid and different geoid models.

• Keywords: geoid height, geoid, height system, solid Earth tides, SLOVRP_2016/Koper, EGG2015, EGM2008, XGM2019e