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Practical Aspects of Real-Time Kinematic Measurements With Topcon Hiper+ And Trimble SPS855 Receivers in the CZEPOS And TOPNET Networks
Kostelecký, Jakub
The Real-Time Kinematic method is the most commonly used Global Navigation Satellite Systems (GNSS) method for positioning in geodetic practice. Within the framework of the article, the behavior of two GNSS devices Topcon HiPer+ and Trimble SPS855 during positioning by RTK method using corrections provided by networks of permanent stations CZEPOS and TopNet is assessed. Specifically, the use of 4 types of corrections from the CZEPOS network and 4 types of corrections from the TopNet network were evaluated. The behavior of the devices is assessed both according to the time required to perform the initial initialization and the time required to average the measurement result, and also according to the RMS (root mean square) error of the vertical component of the position. The evaluation found that the Trimble SPS855 fixed faster than the Topcon HiPer+ (3.6 minutes vs. 5.7 minutes). The averaging time is slightly shorter with the Topcon HiPer+ apparatus than with the Trimble SPS855 apparatus (30 seconds vs. 37 seconds), which is mainly related to the intuitiveness of the control software in the controller. Overall, it is stated that the Topcon HiPer+ equipment is more suitable for corrections from the TopNet network, and the Trimble SPS855 equipment works better with corrections from the CZEPOS network.
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Measurement of GNSS receiver accuracy
Čepl, Miroslav ; Gábrlík, Petr (referee) ; Jílek, Tomáš (advisor)
In this thesis a new method of determining an accuracy of a GNSS receiver is presented. First, a research of basic GNSS systems and a description of receiver accuracy is performed. Subsequently, the method of measuring the accuracy with the focus on RTK mode is proposed. A measuring jig is designed and manufactured. After verifcation of jig accuracy, a measurement of three dierent antennas is performed for subsequent comparison of basic characteristics. The work also contains instructions for operating the measuring jig.
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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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Outdoor Mobile Robot Self-localisation
Sárközy, Gabriel ; Jílek, Tomáš (referee) ; Žalud, Luděk (advisor)
The aim of this work was to create a self-localization unit. The basis of the unit is an electronic platform Netduino Plus, which is connected with a measurement unit MTi-G and a camera based sensor, which is able to detect the position of points on the schools testing polygon. Configuration of the measurement unit MTi-G was done by a modified previously developed program. The program of the platform uses lover level communication with the sensor without using predefined classes from the manufacturer. This should improve the speed of processing the data from the sensor. To check the accuracy of the position provided by the self-localization unit another program was created. This program receives messages form a more accurate localization system that is mounted to the robot. The localization system is based on Trimble DB982 receiving modules.
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Measurement of GNSS receiver accuracy
Čepl, Miroslav ; Gábrlík, Petr (referee) ; Jílek, Tomáš (advisor)
In this thesis a new method of determining an accuracy of a GNSS receiver is presented. First, a research of basic GNSS systems and a description of receiver accuracy is performed. Subsequently, the method of measuring the accuracy with the focus on RTK mode is proposed. A measuring jig is designed and manufactured. After verifcation of jig accuracy, a measurement of three dierent antennas is performed for subsequent comparison of basic characteristics. The work also contains instructions for operating the measuring jig.
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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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Outdoor Mobile Robot Self-localisation
Sárközy, Gabriel ; Jílek, Tomáš (referee) ; Žalud, Luděk (advisor)
The aim of this work was to create a self-localization unit. The basis of the unit is an electronic platform Netduino Plus, which is connected with a measurement unit MTi-G and a camera based sensor, which is able to detect the position of points on the schools testing polygon. Configuration of the measurement unit MTi-G was done by a modified previously developed program. The program of the platform uses lover level communication with the sensor without using predefined classes from the manufacturer. This should improve the speed of processing the data from the sensor. To check the accuracy of the position provided by the self-localization unit another program was created. This program receives messages form a more accurate localization system that is mounted to the robot. The localization system is based on Trimble DB982 receiving modules.
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Determination of accuracy´s characteristics of some GNSS and evaluation of their utilization for the recording changes in land use.
KLINGR, Michal
This diploma thesis deals with a comparison of the measured data using various GNSS apparatures. In the theoretical part, the general structure of navigation systems is described and the comprehensive overview of navigation systems in the world is elaborated here. The next chapters are devoted to regional and augmentation navigation systems. The last chapter in the theoretical part is focused on point field in the Czech Republic.In the practical part of this thesis, the experimental measurement using various GNSS apparatuses was carried out in cadastre unit Kokořov. Subsequently, the measured data were transformed into S-JTSK and compared with each other. In the end, using various GNSS for the purpose of registration changes in landuse was evaluated.
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