|
| |
|
|
Horizontal and vertical positioning of survey net in laboratory B150
Hubáček, Josef ; Soukup, František (referee) ; Machotka, Radovan (advisor)
This bachelor thesis deals with the determination of the horizontal coordinates and heights of the survey control points in the B150 and B151 laboratories at the Faculty of Civil Engineering of the Brno University of Technology. Position coordinates are determined in the local coordinate system. The heights are connected to the Czech State Leveling Network and will be reported in the Baltic Vertical Datum - After Adjustment. The thesis is divided into chapters according to the individual stages of processing. The output of this bachelor thesis are a list of calculated coordinates and heights of the determined points and their overview.
|
|
|
Testing of automatic measurement system
Hromková, Zuzana ; Vondrák, Jiří (referee) ; Machotka, Radovan (advisor)
The thesis deals with testing of the automatic measurement system, namely of the system for monitoring civil engineering structures Trimble 4D Control. A summary of the basic principles of deformation monitor is given at the beginning of the study and is followed by an overview of the system´s structure. The activities carried out under the pilot project (beginning with the installation of the system and finishing by the evaluation of the measured data) are described. The project demonstrated by the functionality, reliability and usability of the systam for monitoring of the structures.
|
|
| |
|
|
Creation of a purpose map of the castle courtyard by the laser scanning method
Kučeravý, Peter ; Kratochvíl, Radim (referee) ; Machotka, Radovan (advisor)
This diploma thesis is dealing with creation of thematical map of castle courtyard of the Veveří castle using the method of laser scanning. The thesis describes the construction of a survey net which is important for measuring control points and then scanning of the area using the scanner FARO Focus 3D. The thesis contains a description of the method of laser scanning and point cloud processing in Trimble RealWorks software. Furthermore, this thesis deals with the accuracy of the point cloud and compares the laser scanning method with the typical tachymetric method according to time duration.
|
|
|
Documentation of the vicarage in the Pavlov village
Slezáková, Gabriela ; Machotka, Radovan (referee) ; Kratochvíl, Radim (advisor)
The thesis is engaged with making documentation of the parish building of the Roman Catholic Church in the South – Moravian village Pavlov. The purpose of this work is practical measuring of the object in the terrain using geodetic methods, calculation of the measured values and the following performance of designs for the appropriate reconstruction of historic building. The text section describes the various preparatory, surveying and office works. The main output of this work is design documentation. It includes a thematic map of the building area, drawing floor plans of the first, second floor and roof truss, fasade views and sections of the building.
|
|
|
Testing of precision of construction lasers
Absolonová, Jana ; Foral, Jakub (referee) ; Machotka, Radovan (advisor)
This Bachelor´s thesis deals with accuracy testing of chosen building laser tools. At first, features of these devices are described. Then the measurement procedure is explained. By this measurement the values for the calculation of errors are obtained. These errors are compared with the maximum deviations prescribed in the manual by the manufacturer. In conclusion, the practical applicability of selected devices is described in relation to measurement experiences. All measured values, calculations and charts are located in attachments of this thesis.
|
|
|
Calculation of local quasigeoid models from heterogeneous data
Kratochvíl, Richard ; Kostelecký,, Jakub (referee) ; Weigel, Josef (referee) ; Kratochvíl,, Vlastimil (referee) ; Machotka, Radovan (advisor)
The goal of this thesis was to evaluate whether it is possible to replace gravimetric data with topographic ones for calculating quasigeoid models using astrogeodetic levelling. Gravimetric data are not of sufficient quality in selected areas, hence their replacement can increase the accuracy of obtained models. The computational program PRVAK was created. It facilitates the calculation of the quasigeoid model by astrogeodetic levelling, the models can be calculated on a profile or in an area by least square adjustment of conditional observations from astrogeodetic deflections of the vertical or their combination with topographic ones. Furthermore, the Dolní Morava network was built, with astrogeodetic deflections of the vertical determined at 34 points. The data comparisons were tested at three localities, where quasigeoid models were calculated by astrogeodetic and astrotopographic levelling and compared with reference data. On the profile Velká Bíteš – Brno – Uherské Hradiště, the calculated models were compared with the gravimetric model calculated by Research Institute of Geodesy, Cartography and Topography. The standard deviation of the differences between the reference model and the models calculated in this work was reduced using astrotopographic levelling by approximately 38 % compared to astrogeodetic levelling. For area models of quasigeoid in the localities of Dolní Morava and Brno, it was possible to compare the internal accuracy of these models. When using astrotopographic levelling, values of standard deviation of height anomalies were reduced by 40 % in Dolní Morava locality and 25 % in Brno locality compared to astrogeodetic levelling. In both localities, the quasigeoid QGZÚ-2013 was chosen as a reference model for comparison of external accuracy. The contribution of astrogeodetic levelling to the improvement of external accuracy could not be demonstrated because the calculated models of quasigeoid have similar accuracy as the reference model.
|
|
|
Testing of SKPOS services
Butkovská, Simona ; Nosek, Jakub (referee) ; Machotka, Radovan (advisor)
Geodetic and Cartographic Institute Bratislava (GKÚ) has been providing the Slovak real-time positioning service (SKPOS) since 2006 as a multifunctional tool for precise real-time positioning of objects and phenomena using GNSS. SKPOS offers three basic positioning services, that can be used in real-time or for postprocessing. The work is dedicated to testing the two most frequently used services, the centimeter and millimeter. To test the SKPOS_cm centimeter service, three test measurements were performed on selected SKPOS mountpoints. The centimeter service currently uses exclusively the concept of a virtual reference station, while GKÚ was interested in expanding the service to include the concept of the so-called “nearest reference station”. For that reason, in 2022 GKÚ decided to perform the first test measurements also in the new concept in order to consider its possible future implementation within SKPOS services. In addition to the centimeter service, the SKPOS_mm millimeter service was also tested, which consists in postprocessing. The work is dedicated to SKPOS, the description of the performed test measurements, the analysis and evaluation of the achieved results.
|
|
|
Survey and preparation of a purpose map of the park Pod Plachtami, Brno Kamenný Vrch, part B
Flídr, Tomáš ; Machotka, Radovan (referee) ; Vondrák, Jiří (advisor)
The theme of this bachelor thesis is creating thematic map of the park Pod plachtami which is located in the city district Brno-Nový Lískovec. The written part describes the entire procedure from terrain reconnaissance, used devices, creating a survey net, detailed survey, to office work and graphic processing. The result of this work is thematical map in 1:500 scale, which is connected to geodetic reference systems S-JTSK and BPV. The map is made in the 3rd accuracy class according to ČSN 01 3410.
|
guest ::
