20.500.12556/RUL-111457 Analiza vplivov na opazovanja GNSS diplomska naloga Analyses of impact on GNSS observations graduation thesis V diplomski nalogi obravnavamo vplive na opazovanja GNSS. Vplive obravnavamo skozi rezultate naknadne obdelave opazovanj. Uporabili smo opazovanja statične metode izmere in jih obdelovali z različnimi nastavitvami, modeli troposfere in ionosfere. V nalogo so vključena opazovanja sistemov GPS in GLONASS. Opazovanja smo obravnavali glede vpliva troposfere z uporabo različnih modelov troposferske refrakcije. Vpliv ionosfere smo predstavili posebej za opazovanja na dveh frekvencah in njihovo linearno kombinacijo L3. Prikazali smo tudi vpliv trajanja opazovanj na kakovost koordinat v kombinaciji z uporabo manj natančnih oddanih efemerid in končnih efemerid IGS. Nadalje smo obravnavali vpliv višinskega kota oz. geometrijske razporeditve satelitov ter faktorjem PDOP. Predstavitev rezultatov in njihovo interpretiranje temelji na koordinatnih razlikah med referenčnimi vrednostmi in koordinatami, pridobljeni iz testnih obdelav. In graduation thesis we discusss impacts on GNSS observables. The evaluation is based on results of post processing of GNSS observations. We performed processing of static observations and analyzed them according to different parameters and models used for reduction of tropospheric and ionospheric impact. We used observations from GPS and GLOASS satellite navigation systems. We analyzed the impact of troposphere by comparing post processing results performed with the usage of different troposphere models. We tested the impact of ionosphere with results obtained by processing observations on two different frequencies and by forming linear combination L3. Quality of computed position was tested from according to the observations duration, combined with the use of less precise broadcast ephemeris and precise final ephemeris IGS. We tested also the impact of different cut-off angle combined with PDOP values. All test results are presented and discussed on the basis of coordinate differences between computed and reference coordinates. GNSS GPS GLONASS vplivi na opazovanja vpliv troposfere vpliv ionosfere PDOP GNSS GPS GLONASS impact on observations post-processing impact of troposphere impact of ionosphere PDOP true true false N. Tancek] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-10-02 07:15:02 2019-10-02 07:15:05 2022-08-23 03:43:10 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 528.28(043.2) 137753 8931681 3545.pdf 3545.pdf 1 E02B4AA0000F9D5C4005BC893F18491B 669907a3b2e7235b38f5969c0659148e89e5de3979d6b6d03f55c5d870fb4581 64db44fa-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=123324 Fakulteta za gradbeništvo in geodezijo 0 0 0