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Testing of the accuracy of the heights measured by GNSS
Stolárová, Ivana ; Volařík, Tomáš (referee) ; Kuruc, Michal (advisor)
The diploma thesis deals with a testing of the real coordinates accuracy measured in favorable and unfavorable conditions, which are determined by method GNSS RTK. The work explores the real accuracy and reliability of heights measurement with the signal noise and multipath interference occurring, caused by surrounding vegetation, buildings, power lines, and also the accuracy under optimal conditions while measuring in a meadow. Influence of day time, observation length, correction provider to internal and external precision is watched. It also examines the issues of initialization in these conditions. For this purpose was collected set of statistics containing 960 measurements on 30 points. During survey was used apparatus Trimble R4. GNSS measurements were statistically processed and evaluated and finally the results were compared with the results of Bc. Klára Kordasová, who measured the same tested points with identical methodology using apparatus from Leica company. Results of the thesis can be used in praxis.
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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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Vliv podmínek práce stroje na přesnost řízení jeho pohybu
Šlampa, Martin
This bachelor thesis on the topic of The impact of conditions of work of machine on ac-curacy of steering of its movement deals with the methods of allowing accurate positio-ning on the Earth. The thesis presents and describes the most common ways of positio-ning and its principles. Major part is focused on the influences, which cause a deteriora-tion of accuracy of determining the position of the working conditions of the machine. The end of the thesis is devoted to possibilities of use of the navigation in agriculture
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Observation of educational control framework in Björnson park in Brno
Andraško, Matúš ; Vondrák, Jiří (referee) ; Machotka, Radovan (advisor)
The bachelor work deals with control framework, which was made for education and training students VUT faculty of civil engineering in Brno. This point field was surveying by GNSS method, which was enough for its purpose. Our task was specify this control framework by combination of terestric and satellite methods. Documentation of this task involves tables of coordinates in positional system S-JTSK and altitudes in system Bpv and geodetic sketch of control framework.
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Využití GPS u zemědělské techniky pro pěstování rostlin
DOMŠA, Jan
This bachelor thesis deals with GPS technology and explains the functionality of that system. It describes the possibilities of GPS technology in agriculture, mainly for guidance sets seeding. The first part explains the problems of navigation systems the second part of the thesis is focused on comparing the activities of drills when using a navigation system and a navigation system without running primary agricultural production.
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Využití sítě CZEPOS pro tvorbu účelové mapy jako podkladu k rozšíření parku Smetanovy sady ve Vyškově
Sedláček, Jiří
This thesis is dealing with scientific/technic discipline, more specifically with mapping specialization in Surveying. Works are taking place in Pazderna locality, which is situated in Northern part of Southmoravian region in northeast part of the Vyškov catastral area. GNSS system methods were used for aiming topography and altimetry, more specifically by using network of permanent stations "CZEPOS". Modern GNSS method of measuring in real time (RTK) and tachymetric measure, which is classic geodetic method, were used for processing. The output of the work is a map in scale of 1 : 1 000, which should serve as a part of a plan for extending park in Smetanovy sady street in Vyškov. This map was created in Groma program, Kokeš and his extensions for altimetry, Atlas DMT.
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Hybrid module for industrial localization
Sedláček, Petr ; Fuchs, Michal (referee) ; Kubíček, Michal (advisor)
Tato diplomová práce si klade za cíl návrh hybridního lokalizačního zařízení, které je schopno lokalizace uvnitř i vně budov. Lokalizace uvnitř budov je dosažena pomocí technologie Ultra Wideband a venkovní lokalizace je provedena pomocí kombinace technologie RTK GNSS a PPP pomocí open - source softwaru zvaného RTKLIB. První část textu se zaměřuje na vysvětlení používaných technologií a výběr nejpřesnější technologie pro venkovní lokalizaci. Druhá část se zaměřuje ma vývoj potřebného hardware a software finálního zařízení a na integraci systému pro venkovní lokalizaci do systému pro lokalizaci vnitřní. Výstupem práce je plně funkční zařízení, které je schopné plynulé lokalizace uvnitř i vně budov. Funčnost celého zařízení je dokázána na finálních testech uskutečněných ve vnitřních i venkovních prostorách. Na závěr také práce zmiňuje možná vylepšení celého zařízení, která mohou být v budoucnu provedena.
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GNSS-RTK Precise Positioning for Engineering Applications
Grečnár, Jiří ; Talácko,, Milan (referee) ; Bureš, Jiří (advisor)
The thesis deals with precision analysis, process optimization and repeatibility of GNSS-RTK measurements for surveying aplication. Measuring procedure, that enables determination of a spatial position with a permissible deviation less than 10mm, was tested based on previous published findings. The test procedure was tested on two sets of test measurements obtained during 27 h and 26 h observations in connection with CZEPOS. The results were later analyzed. The first set of measurements was measured by the RTK3-GG method (9 m and 60 km vectors) and computed by a network solution VRS3-MAX-GG. Both were in ideal conditions – ideal, not obstructed observational horizon and good availability of differential corrections. The second set was measured by RTK3-GG method (22 km and 62 km vectors) and computed by network solution VRS3-MAX-GG. Both were in adverse conditions - obstructed observational horizon and adverse availability of differential corrections. Precision analysis and design of appropriate filtering method and optimal measurement procedure were done based on the results obtained from the test measurements. Optimal measurement procedure was then tested by measurements in a three point network.
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The Evaluation of RTK method precision
Horák, Aleš ; Volařík, Tomáš (referee) ; Kuruc, Michal (advisor)
The aim of this diploma thesis was to evaluate a precision of spatial position of chosen services from Czepos and TopNET providers. The chosen services were virtual reference station generated by MAC concept from Czepos provider and virtual reference station NVR3 from TopNET provider. Testing measurement was measured by RTK method with GNSS instrument from Leica System 1200. There were measured long-standing observations which lasts 24 hours and short observations which lasts five and twenty seconds. The short observations were measured at five points in area of Brno. Result of the thesis is comparisons of precisions in position and height.
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