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Antenna for GNSS Reception in GEO-Orbit
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

There are a number of global navigation satellite systems (GNSS), in use or planed,

which are used for navigation on earth but also for autonomous navigation of satellites

in low earth orbit (LEO). It would be desirable to also have autonomous navigation in

geosynchronous earth orbit (GEO) to reduce costs and make it possible to get higher

accuracy on the position of the satellite. One part of the navigation system is the

GNSS antenna which is examined in this master thesis.

The specifications of the antenna were first decided and then three antenna

alternatives were investigated in greater detail: a monofilar helix antenna, a three

element circular array antenna and a twelve element circular array antenna. The result

was that they would all work as a GNSS antenna in GEO but none could be judged to

be the best under all circumstances. The size requirement for the mission and the used

GNSS receiver would primarily decide which fits the mission best.

Abstract [sv]

Det finns ett antal världstäckande navigeringssystem (GNSS), i användning och

planerade, som används för navigation på jorden fast också för autonom navigation för

satelliter i låg bana runt jorden. Det skulle också vara önskvärt att använda autonom

navigation för satelliter i geostationär omloppsbana (GEO) för att reducera kostnaden

och få högre positions noggrannhet. En del av navigationssystemet är GNSS antennen

vilken är undersökt i detta examensarbete.

Specifikationerna för antennen bestämdes först och sedan undersöktes tre olika

antennalternativ i detalj: en monofilär helixantenn, en tre elements cirkulär gruppantenn

och en tolv elements cirkulär gruppantenn. Resultatet var att alla alternativen skulle

fungera som en GNSS antenn i GEO-bana fast inget av alternativen är bäst i alla

förhållanden. Storlekskraven för uppdraget och vilken GNSS mottagare som skall

användas påverkar vilket av alternativen som passar uppdraget bäst.

Place, publisher, year, edition, pages
2014. , 99 p.
EES Examensarbete / Master Thesis, XR-EE-SPP 2014:003
Keyword [en]
GNSS antenna, GNSS, GPS, antenna, GEO, helical antenna, circular array, conical
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-149283OAI: diva2:738916
Educational program
Master of Science in Engineering - Electrical Engineering; Master of Science - Electrophysics
Available from: 2014-09-05 Created: 2014-08-19 Last updated: 2014-09-05Bibliographically approved

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