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Določitev debeline ledu na lednem plezališču v Mlačci : magistrsko delo št.: 156/II. GIG
ID Magyar, Jan (Author), ID Ambrožič, Tomaž (Mentor) More about this mentor... This link opens in a new window, ID Pavlovčič Prešeren, Polona (Co-mentor), ID Marjetič, Aleš (Co-mentor)

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Abstract
V magistrskem delu smo s terestričnim laserskim skenerjem Leica BLK360 in slikovnim tahimetrom Leica Nova MS60 v treh terminskih izmerah skenirali ledno plezalno steno Mlačca. Zanimala nas je debelina ledu glede na terminsko izmero. Za georeferenciranje oblakov točk smo na nasprotni strani ledno plezalne stene stabilizirali mrežo tarč. Mreži tarč smo na način klasične terestrične geodetske izmere določili prostorske koordinate. S statično GNSS-metodo izmere smo zagotovili geodetski datum v državnem koordinatnem sistemu D96-17/TM(ESRS). Po opravljenih meritvah smo izvedli analizo debeline stene glede na terminsko izmero in vrsto uporabljenega instrumenta. Rezultate smo grafično predstavili ter izdelali prečne profile ledno plezalne stene za tri izmišljene plezalne smeri. Na prečnih profilih smo numerično prikazali debelino ledu. Ugotovili smo, da ima pri skeniranju ledu velik vpliv na kakovost podatkov vpadni kot laserskega žarka in valovna dolžina instrumenta. Pomembna je tudi količina vode na površini ledu, ki zelo vpliva na odbojnost laserskega žarka.

Language:Slovenian
Keywords:geodezija, magistrska dela, GIG, lasersko skeniranje, ledno plezalna stena, odbojnost, georeferenciranje, vpadni kot
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:[J. Magyar]
Year:2022
Number of pages:XII, 54 str., [3] str. pril.
PID:20.500.12556/RUL-141122-90d9413a-6405-f47f-1115-83fd99377823 This link opens in a new window
UDC:528.3:528.94(497.4Mlačca)(043.3)
COBISS.SI-ID:125897219 This link opens in a new window
Publication date in RUL:23.09.2022
Views:474
Downloads:31
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Secondary language

Language:English
Title:Determining the ice thickness at the ice climbing wall Mlačca : master thesis no.: 156/II. GIG
Abstract:
In the master's thesis, we scanned the Mlačca ice climbing wall in three term measurements with a Leica BLK360 terrestrial laser scanner and a Leica Nova MS60 image tachymeter. We were interested in the thickness of the ice according to the term measurement. For georeferencing point clouds, we stabilized a network of targets on the opposite side of the ice climbing wall. We determined the spatial coordinates of the network of targets in the manner of classical terrestrial geodetic measurement. Using the static GNSS measurement method, we provided the geodetic datum in the national coordinate system D96-17/TM(ESRS). After the measurements, we performed an analysis of the wall thickness according to the term measurement and the type of instrument used. We presented the results graphically and created cross sections of the ice climbing wall for three imaginary climbing directions. The thickness of the ice was shown numerically on the cross sections. We found that when scanning ice, the angle of incidence of the laser beam and the wavelength of the instrument had a great influence on the quality of the data. The amount of water on the surface of the ice is also important, as it greatly affects the reflectivity of the laser beam.

Keywords:geodesy, master thesis, laser scaning, ice climbing wall, reflectance, georeference, angle of incidence

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