Analysis of parameter influence on performance of LEO scientific satellite ground stations in urban areas

doctoral thesis

• Title (croatian): Analiza utjecaja parametara na izvedbu zemaljske postaje za znanstvene satelite u niskim putanjama u urbanim sredinama
• Author: Shkelzen Cakaj; ISNI: 0000 0003 8410 5637
• Mentor: Krešimir Malarić (mentor)
• Committee member: Juraj Bartolić (član povjerenstva)
• Committee member: Krešimir Malarić (član povjerenstva)
• Committee member: Slavko Šarić (član povjerenstva)
• Committee member: Željko Štih (član povjerenstva)
• Committee member: Dina Šimunić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2008-01-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Radio Communications
• Universal decimal classification (UDC): 621.3 - Electrical engineering ; 65 - Communication and transport industries. Accountancy. Business management. Public relations

Abstract

International efforts are oriented on global mobile communication satellite system that is fully integrated with the terrestrial mobile system. Space observation and other scientific missions are developing especially in the fields where similar researches can not be done by means on the Earth. Thus, satellite ground stations applications in the future will further develop, related to both, massive communication and scientific purposes. The performance of the ground station is of high importance related to operation of the satellite communication system. Analyses on parameters which impact the performance of the ground station in urban areas are given. Aspects which are considered are: rain attenuation, intermodulation interference and communication duration under low elevation angle. Solar radio flux density is applied for experimental check of the ground station performance. By this dissertation it is confirmed mathematically and with a few experimental results that the ground station situated in an urban area, performs satisfactorily when receiving signals from a LEO satellite system when parameters with influence on performance are well technically considered. The satellite ground station can be built in urban area by applying sophisticated analytical methods during the implementation.

Abstract (croatian)

Međunarodna težnja je orijentirana ka globalnim satelitskim mobilnim komunikacijama koje će biti u potpunosti usklađene sa postojećim zemaljskim mobilnim sustavima. Svemirska istraživanja i ostale znanstvene misije se razvijaju posebno u oblastima u kojima se takva istraživanja se ne mogu obaviti sa postojećim sredstvima na Zemlji. Tako da primjena satelitski zemaljski postaja će se u budućnosti razviti bilo za masivne komunikacije isto tako i za znanstvena istraživanja. Izvedba zemaljske postaje je od visokog značaja u smislu cjelokupnog funkcioniranja satelitskog komunikacijskog sustava. Analiza utjecaja parametara na izvedbu zemaljske postaje za znanstvene satelite u niskim putanjama u urbanim sredinama je ovdje data. Obuhvaćeni aspekti se odnose na: slabljenje zbog kiše, interferencija zbog intermodulacije i komunikacija pod niskim kutom elevacije. Gustoća solarnog radio fluksa je primjenjena radi kontrole izvedbe zemaljske postaje eksperimentalnim putem. Ovom disertacijom je potvrđeno matematički i sa nekoliko eksperimentalni rezultata da zemaljska postaja u urbanim sredinama zadovoljava svojom izvedbom prilikom prijema signala od satelite u niskim putanjama ako su parametri na utjecaj te izvedbe tehnički dobro smatrani. Satelitske zemaljske postaje se mogu graditi i u urbanim sredinama primjenom dobrih analitičkih metoda prilikom implementacije.

• Keywords: LEO; satellite; ground station; performance; rain attenuation; intermodulation; communication duration
• Keywords (croatian): NZO; satelit; zemaljska postaja; izvedba; slabljenje kiše; intermodulacija; trajanje komunikacije
• Language: english
• URN:NBN: urn:nbn:hr:168:449800
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2020-04-29 07:22:18