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Assesment of Galileo High Accuracy Service
Nosek, Jakub ; Douša, Jan ; Václavovic, Pavel ; Kala, Michael
The paper deals with the testing of the Galileo High Accuracy Service (HAS), which will be officially launched in January 2023 as part of the HAS Initial Service phase. The results of the HAS comparison with the precise GNSS product showed a high accuracy of the HAS corrections and the fulfillment of the declared accuracy. Data processing at 3 selected stations of the EUREF Permanent Network showed that the officially declared HAS accuracy (horizontal accuracy 20 cm, vertical accuracy 40 cm) is achievable, but with a longer required convergence time (kinematic processing 22 min, static processing 8 min) than the required convergence time (5 min).
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Accuracy of Real Time Kinematic Method in Building of Geodetic Control
Nosek, Jakub ; Kuruc, Michal (referee) ; Bárta, Ladislav (advisor)
The aim of this bachelor thesis was to evaluate the accuracy of the RTK method in the creation of point fields. The RTK-measurement was carried out near the Faculty of Civil Engineering, Technical University in Brno, and near Jedovnice, by using the CZEPOS network and the Trimble VRS Now Czech network. These two locations have made it possible to assess the effect of receivers distance to the reference stations on measurement accuracy. At each point, two continuous coordinate records were executed by the RTK method after 10 seconds during 10 minutes. The graphs were compared to the coordinate differences of the pairs of independent measurements. The results of the RTK method were tested against the reference values determined by the common equalization of the measurement results of the fast static method and the terrestrial measurements by the total station using the LSM. The bachelor thesis also includes a comparison of the results of the transfer of spatial coordinates ETRF2000 to S-JTSK using precise global transformation performed by several transformation programs.
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Mapping Survey of surroundings of the Dačice Chateau
Pittauerová, Petra ; Nosek, Jakub (referee) ; Kuruc, Michal (advisor)
This bachelor thesis deals with the creation of a thematic map of Dačice chateau surroundings. The thesis contains information about the location, the measuring instruments, the main measurement methods and the activity performed before, during and after the measurement. The final thematic map is made in scale 1:500 in the 3rd accuracy class according to ČSN 01 3410 in the coordinate system S-JTSK and the altitude system Bpv. The map shows the state of the locality at the turn of August and September 2020.
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Testing of Precise Point Positioning Method
Nosek, Jakub ; Kratochvíl, Radim (referee) ; Machotka, Radovan (advisor)
This diploma thesis deals with the Precise Point Positioning (PPP) method in various variants. The thesis describes the theoretical foundations of the PPP method and the most important systematic errors that affect accuracy. The accuracy of the PPP method was evaluated using data from the permanent GNSS station CADM, which is part of the AdMaS research center. Data of the period 2018 – 2019 were processed. The results of combinations of different GNSS and the results of different observation periods were compared. Finally, the accuracy was verified at 299 IGS GNSS stations.
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Effect of layer thickness on critical angle of additively manufactured lattice structures
Nosek, Jakub ; Vrána, Radek (referee) ; Vaverka, Ondřej (advisor)
Aim of this work is to describe the effect of a layer thickness on critical angel of a lattice structures manufactured by SLM technology. The effect of layer thickness was investigated on single struts and on lattice structures made from stainless steel 316L. Better geometrical accuracy could be obtained, if the smaller layer thickness is used. Less attached powder particles on downskins was also observed on lattice structures. Thanks to this thesis, it is possible to determine, if it is meaningful to decrease the layer thickness in order to improve manufacturability of lattice structures even with higher manufacturing time.
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3D model of the selected object
Veselý, Milan ; Nosek, Jakub (referee) ; Kalvoda, Petr (advisor)
The aim of the thesis was to assess the accuracy of photogrammetric results from images taken with a low-cost Xiaomi Mi 10T Pro camera and a professional digital SLR camera Canon EOS 6D Mark II with a 24 mm fixed lens. The chapel of St. John of Nepomuk near Guntramovice was chosen as the subject for the images. Forty-nine insertion and control points were targeted and scanned at the chapel. Block and beam alignment and creation of 3D mesh models was performed in Bentley ContexCapture software. The standard deviations of all three axes (X, Y, Z) and positional standard deviation on the control points and deviations relative to a reference point cloud acquired with a ground-based laser scanner were statistically tested. The results show that, with the right imaging and processing methods, comparable results can be achieved using a low-cost camera.
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3D model of the selected object
Prokop, Jaromír ; Nosek, Jakub (referee) ; Kalvoda, Petr (advisor)
The subject of this diploma thesis is the creation of four georeferenced 3D models of the Chapel of Virgin Mary Help in Brno-Líšeň using images from two cameras, a digital reflex camera Canon EOS 6D Mark II and a low-cost camera Xiaomi Mi 10T Pro mobile phone, in two photogrammetric software, Bentley ContextCapture and Agisoft Metashape Professional. The accuracy of the models was analysed using checkpoints measured by a total station and a reference point cloud from the laser scanning of the chapel. One of the models was presented using Sketchfab on the internet, another one was 3D printed.
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Mapping Survey of surroundings of the evangelic church in Růžďka
Hanáková, Alžběta ; Nosek, Jakub (referee) ; Kuruc, Michal (advisor)
The objective of this bachelor’s thesis is surveying the surrounding of the evangelical church in Růžďka by tacheometrical method and creating thematical large scale map. This thesis descibes the whole process, from terrain reconnaissance, creating a survey net, surveying itself and following calculation and graphic processing which was done in softwares Groma, ATLAS and Microstation V8i. The result is thematical map in 1:250 scale, which is connected to binding geodetic reference systems and meets the requirements of the 2nd accuracy class according to ČSN 01 3410.
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The Choice of Business Form from the Perspective of Income Tax
Nosek, Jakub ; Rada, Zbyněk (referee) ; Svirák, Pavel (advisor)
The bachelor’s thesis deals with selecting the appropriate form of business for a particular company. The main selection criterion is the amount of income tax for specific forms of business, but it also takes account of other factors. The thesis compares three selected forms of business. There is also presented the particular company. Subsequently the amount of income tax for every form of business is determined. In conclusion, the results are evaluated and the best option is selected.
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