Grafički prikaz ionosferskog kašnjenja iznad Europe

undergraduate thesis

• Title (english): Graphical representation of the ionospheric delay over the Europe
• Author: Marko Buterin
• Mentor: Tomislav Kos (mentor)
• Committee member: Tomislav Kos (predsjednik povjerenstva)
• Committee member: Sonja Grgić (član povjerenstva)
• Committee member: Josip Vuković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

U današnje doba određivanje trenutnog položaja na Zemlji postalo je neophodno za život svih ljudi. Točan izračun pozicije je prijeko potreban u svim granama ljudskog djelovanja. Za te potrebe koristi se GNSS (globalni navigacijski satelitski sustav). Međutim postoji niz problema koji smanjuju preciznost izračuna među kojima je najznačajnije ionosfersko kašnjenje jer uzrokuje najveća odstupanja od točnog položaja. Glavni problem je što se ionosfera mijenja tokom dana jer ovisi o sunčevom zračenju. Također se mijenja periodično svakih 11 godina što predstavlja jedan solarni ciklus. Da bi se smanjile pogreške uzrokovane ionosferskim kašnjenjem koriste se dvofrekvencijski prijemnici, diferencijski prijam te modeli ionosfere.
Za potrebe rada je izrađen program za prikaz ionosferskog kašnjenja iznad Europe uz pomoć programskog paketa Matlab koji nam vrlo lako omogućuje uvid u ionosfersko kašnjenje u bilo kojem trenutku promatranog dana za dostupne podatke.

Abstract (english)

Nowadays, determining the current location on the planet has become a life necessity. Exact calculation of the position has become essential in all fields of human activity. GNSS (global navigation satellite system) is used for that purpose today. However, there are some problems that cause reduction in accuracy of the exact calculation, among which the most important is ionospheric delay due to the fact that it causes the largest accuracy deviations. Main issue is the fact that ionosphere changes during the day because of it's dependency with the solar radiation. It also changes periodically every 11 years, representing the exact time of a single solar cycle. In order to reduce the errors caused by ionospheric delay, we use dual frequency receivers, differential reception and models of the ionosphere.
For the purposes of this graduate work, a program for displaying the ionospheric delay above Europe was created using the Matlab package that gives us the insight of ionospheric delay status at all times.

• Keywords: GNSS; ionosfera; modeli ionosfere; ionosfersko kašnjenje; TEC; IPP
• Keywords (english): GNSS; ionosphere; models of the ionosphere; ionospheric delay; TEC; IPP
• Language: croatian
• URN:NBN: urn:nbn:hr:168:049738
• Study programme: Title: Computing; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 08:08:21