diplomska naloga
Abstract
V diplomski nalogi primerjamo višine, pridobljene z GNSS-višinomerstvom, z višinami iz digitalnega
modela površja, izdelanega z malim brezpilotnim letalnikom. Meritve so potekale v naselju Vače v
okviru terenskih vaj. Koordinate točk smo na terenu pridobili z RTK-metodo izmere GNSS. Istočasno
z izmero GNSS je območje preletaval brezpilotni letalnik podjetja Geavis d. o. o. S pomočjo
programske opreme so v podjetju iz posnetih fotografij izdelali digitalni model površja, ki je bil
predmet primerjave višin, ter ortofoto, ki smo ga uporabili pri obdelavi podatkov. GNSS-točke smo
klasificirali v tri razrede: cesta, pokošen travnik, nepokošen travnik. S primerjavo obeh načinov
pridobitve višine na istih točkah smo ločeno po razredih izračunali višinske razlike. Ugotovili smo, da
le-te večinoma presegajo doseženo točnost določitve položajev z RTK-metodo izmere. Višinske
razlike so najmanjše na pokošenem in največje na nepokošenem travniku. Iz tega lahko zaključimo, da
je pri interpretaciji višin iz digitalnega modela reliefa oziroma površja, narejenega z brezpilotnim
letalnikom, potrebna določena mera kritičnosti, še posebej na območjih z večjo vegetacijo.
Keywords
geodezija;diplomska naloga;UNI;GIG;GNSS-izmera;višinomerstvo;brezpilotni letalniki;ortofoto;RTK - metoda izmere;
Data
Language: |
Slovenian |
Year of publishing: |
2015 |
Typology: |
2.11 - Undergraduate Thesis |
Organization: |
UL FGG - Faculty of Civil and Geodetic Engineering |
Publisher: |
Š. Jazbec |
UDC: |
528.2(043.2) |
COBISS: |
7160417
|
Views: |
1825 |
Downloads: |
441 |
Average score: |
0 (0 votes) |
Metadata: |
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Other data
Secondary language: |
English |
Secondary title: |
Comparison of heights from GNSS levelling and from DSM, made with unmanned aerial vehicle |
Secondary abstract: |
In this graduation thesis heights gathered from GNSS levelling are being compared with heights from
digital surface model (DSM), made with an unmanned aerial vehicle. The measurements took place in
the Vače village. Points in the field were measured with the real time kinematic method of GNSS
levelling. At the same time an unmanned aerial vehicle, owned by Geavis d. o. o. company, flew over
the area and took photographs of it. Using their software they made a digital surface model, which we
used for camparison. They also created an ortophoto to help us recognize points on site. Measured
points were divided into three classes: road, mowed grassfield and unmowed grassfield. From
compared heights of the same points, acquired from GNSS and DSM, for each class differences in
heights were computed. They exceeded the possible accuracy of RTK-method of GNSS-levelling,
with smallest differences at the mowed grassfield and biggest at the unmowed ones. Based on our
results we suggest caution when using DSM height data from unmanned aerial vehicle, especially in
the areas with high vegetation. |
Secondary keywords: |
GNSS-levelling;unmanned aerial vehicle;matching;orthophoto;RTK surveying; |
File type: |
application/pdf |
Type (COBISS): |
Bachelor thesis/paper |
Thesis comment: |
Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo |
Pages: |
XX, 24 str. |
ID: |
8966522 |