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Aplikace Galileo High Accuray Service
Kazmierski, Kamil ; Hadas, Tomasz ; Kudłacik, Iwona ; Marut, Grzegorz ; Madraszek, Szymon
Since January 2023 the Galileo High Accuracy Service (HAS) is available to registered users. Within the HAS users can retrieve clock and orbit corrections, as well as code biases for Galileo and GPS constellations. Galileo HAS covers almost the entire globe and is the next system, after the Japanese CLAS (Japanese Centimeter Level Augmentation Service) and the Chinese PPP-B2b, that provides corrections via a satellite signal. These Galileo corrections are transmitted in the Galileo E6 signal but also via the Internet stream. The official HAS Service Definition Document indicates that the positioning accuracy is better than 25 cm and better than 30 cm for horizontal and vertical components, respectively. HAS corrections can be used in difference real-time applications without Internet connection. The presented work shows the use of Galileo HAS corrections in various geoscience applications such as positioning, timing, troposphere monitoring or coseismic vibrations detection. Additionally, the quality of the transmitted HAS correction is also verified using the SISRE parameter. The computations are carried out in the in-house developed GNSS-WARP software with the Internet HAS corrections saved in the ASCII files by the BKG Ntrip Client software. The Galileo HAS corrections quality using SISRE parameter equal to 8.6 cm and 13.0 cm for GPS and Galileo respectively. The experiment with Precise Point Positioning reveal sub-decimeter and centimeters accuracy in kinematic and static approach, respectively. In terms of timing precision Galileo HAS ensure precision of single nanosecond. Zenith Tropospheric Delay estimation with the use of evaluated corrections meet the requirement of troposphere monitoring and coseismic vibrations detection was also possible.
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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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Possibilities of Using GPS when Analysing Road Accidents
Jokešová, Markéta ; Semela, Marek (referee) ; Panáček, Vladimír (advisor)
Diploma thesis deals with the possibilities of using GPS when analysing road accidents. The history and structure of U.S. global positioning system, Russian GLONASS system and European Galileo system are described. GPS receivers are sorted out by the possibility of use. The thesis deals with the methods of refinement GPS and how the vehicles can be monitored using GPS. In the practical part of this diploma thesis measurements with several types of navigations were made. And a comparison of accuracy of measured data with the real situation where the car was found at the moment of measuring followed and how fast was gone.
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Searching of metallic cables using geolocation systems and locator
Flídr, René ; Čučka, Milan (referee) ; Filka, Miloslav (advisor)
Subject of this work is a laboratory excersise, in which student will be going through a training polygon in an FEKT VUT area. Outcome of this work is going to be a mobile application, serving as a navigation and controll tool for students. They will be searching for control points of interests with copper lines under the ground. Then they will get information from theese lines with the help of copper lines searcher. Students should learn methods to search and localize copper lines as well as extracting data from them with the help of geolocalization andcopper lines searcher.
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Navigation Systems
Pospíšil, Václav ; Dobrovský, Ladislav (referee) ; Šeda, Miloš (advisor)
The first part of the thesis is devoted to a comprehensive description and development of global navigation satellite systems, which is followed by the second part, which adresses their use through navigation devices and applications. The second part discusses the properties and specifications of individual devices and applications. Part of this work is the final evaluation of individual applications in terms of their technical parametres.
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Software GNSS receiver
Jedlička, Petr ; Bobula, Marek (referee) ; Záplata, Filip (advisor)
The thesis deals with the analysis and the reception of the freely available signals of the navigation satellites in the L1 and E1 bands of the GPS and Galileo systems. The described signal reception sections include the process of the acquisition, the carrier frequency and phase synchronization and tracking, the spreading code phase tracking, the signal demodulation and the channel decoding. The simulation of the entire receiver is performed in MATLAB. The deeply analyzed signal reception component is the one responsible for the carrier phase and frequency synchronization and tracking. In that case, more methods and their comparison are usually listed. The signal reception component, which is responsible for the carrier phase and frequency tracking and the spreading code phase tracking, is also implemented in FPGA.
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Multipurpose bicycle alarm
Albert, Matej ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This diploma project is about designing a concept of an anti-theft tracking device for a bicycle. The device is equipped with a GNSS module for tracking of current location, GSM module for sending the location data in case of a theft and a BT module for user settings via mobile phone. The bike theft detection is detected by an accelerometer. The final goal of this project is a concept of such a device for evaluation and improvement purposes.
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Use of GPS in the Car Industry Oriented on Self-driving Vehicles
Gróf, Marko ; Sedláček, Pavel (referee) ; Šedrlová, Magdalena (advisor)
Tato bakalářská práce se zabývá využitím GPS v automobilovém průmyslu se zaměřením na bezpilotní vozidla. Hlavním cílem bylo přiblížit GPS systém jako takový, jeho využití v autonomních vozidlech, vysvětlit výhody i nevýhody těchto automobilů a popsat různé hardwary a softwary, které dále využívají. První polovina práce nejprve do velkých detailů charakterizuje GPS, aby se čtenář seznámil s tím, jak navigační systém pracuje. V druhé části se čtenář dozví o autonomních vozech, do jakých úrovní jsou rozdělena, a které systémy používají. Dále jsou zde popsány výhody a nevýhody těchto vozidel a také hlavní rozdíly mezi dnešními a autonomními auty. Závěr této práce je soustředěn na benefity inteligentní dopravy, ale i na pohled do budoucnosti vozidel či celé dopravy.
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Position Tracking with GPS and PDA
Černohorský, Vilém ; Herout, Adam (referee) ; Szőke, Igor (advisor)
This work presents steps in creation of remote position tracking application. Document introduces history of geographical positioning and navigation, and describes development of navigation from primitive utilities to complex radio navigation systems. Global Positioning System is described in more detail including NMEA protocol used by GPS receivers. This work also presents several current navigation applications. Based on obtained information work presents analysis, object-oriented design and implementation of remote position tracking system.
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