prikaz prve stranice dokumenta Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere
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doctoral thesis
Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. urn:nbn:hr:168:657499
Vuković, Josip
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Communication and Space Technologies

Institutional repository: FER Repository

Cite this document

Vuković, J. (2017). Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:657499

Vuković, Josip. "Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. https://urn.nsk.hr/urn:nbn:hr:168:657499

Vuković, Josip. "Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2017. https://urn.nsk.hr/urn:nbn:hr:168:657499

Vuković, J. (2017). 'Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:168:657499

Vuković J. Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2017 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:168:657499

J. Vuković, "Proširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:168:657499

Metadata
TitleProširenje područja rada sustava nadopune satelitske navigacije lokalno prilagođenim modelom ionosfere
Title (english)Extension of operating area of satellite navigation augmentation system using locally adapted ionospheric model
AuthorJosip Vuković
MentorTomislav Kos (mentor)
Committee memberTomislav Kos (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Communication and Space Technologies)
Zagreb
Defense date and country2017, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Radio Communications
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
Globalni sustavi za satelitsku navigaciju GNSS (eng. Global Navigation Satellite System) temelj su mnogih tehničkih sustava današnjice. Izvor najveće pogreške u GNSS-u je ionosfera, u kojoj zbog refrakcije dolazi do smanjenja brzine širenja elektromagnetskih valova između satelita i prijamnika. Europskim sustavom nadopune EGNOS (eng. European Geostationary Navigation Overlay Service) nadzire se cjelovitost rada globalnog sustava za pozicioniranje GPS (eng. Global Positioning System) te se procjenjuje stanje ionosfere iznad Europe. Te podatke, osim korisnika iz područja zrakoplovstva, upotrebljavaju i korisnici otvorene usluge EGNOS-a. U ovom doktorskom radu karakterizirana je EGNOS-ova pogreška procjene ionosfere nad srednjim geografskim širinama na području Europe u vrijeme različitih stanja ionosfere, uzrokovanih geomagnetskom aktivnošću, Sunčevom aktivnošću, godišnjim dobima i dobima dana. Globalni model ionosfere NeQuick 2 prilagođen je referentnim podacima o ukupnom sadržaju elektrona u ionosferi na promatranom području. Karakterizirana je točnost takvog lokalno prilagođenog modela s povećanjem udaljenosti od mjesta lokalne prilagodbe te su određeni radijusi u kojima pogreška modela odgovara pogrešci EGNOS-a. Uspoređeno je više inačica lokalno prilagođenog modela ionosfere NeQuick 2 te je predložena metoda proširenja geografskog područja rada otvorene usluge sustava EGNOS lokalno prilagođenim modelom ionosfere. Vrednovanjem točnosti određivanja položaja dobivenog korištenjem razvijene metode potvrđena je njena djelotvornost.
Abstract (english)
The ionosphere causes the biggest error in global navigation satellite systems as the refraction prolongs the propagation time of an electromagnetic wave travelling from a satellite to a receiver. European Geostationary Navigation Overlay Service (EGNOS) monitors the Global Positioning System's (GPS) integrity and estimates the ionospheric conditions over Europe. Those data are primarily intended for use in aviation, but EGNOS Open Service users also benefit of such data. In this doctoral thesis the EGNOS middle latitude ionospheric correction error was characterized in different ionospheric conditions, caused by solar activity, geomagnetic activity, seasons and time of day. The global ionospheric model NeQuick 2 was adapted by referent total electron content data from the observed area. The accuracy of such locally adapted ionospheric model and its decrease with distance from the local adaptation point were evaluated. Radii in which the model performance was comparable to that of EGNOS were determined. Different versions of locally adapted NeQuick 2 model were compared and a method for extension of the EGNOS Open Service operating area with locally adapted ionospheric model was proposed. The validation of positioning accuracy achieved using the proposed method confirmed the efficiency of the method.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:657499
Study programmeTitle: Electrical Engineering and Computing
Study programme type: university
Study level: postgraduate
Academic / professional title: Doktor znanosti elektrotehnike i računarstva (Doktor znanosti elektrotehnike i računarstva)
Type of resourceText
Extent116 str. ; 30 cm
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
Created on2019-04-05 13:10:20