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Reconstructing antenna gain patterns of Galileo satellites for signal power monitoring

Allende Alba, Gerardo and Thoelert, Steffen (2020) Reconstructing antenna gain patterns of Galileo satellites for signal power monitoring. GPS Solutions, 24 (1). Springer. DOI: 10.1007/s10291-019-0937-9 ISSN 1080-5370

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Abstract

Monitoring the quality of global navigation satellite system (GNSS) signals is of primary importance for a variety of applications requiring high levels of robustness, reliability and integrity. A key element in the signal quality verification is the evaluation of the available power at the user location, including its spatial characteristics. As such, the expected performance of the GNSS satellite antenna is, for most applications, assumed as nominal. However, due to a variety of reasons such as degradation due to heavy strains during launch as well as space environment factors, it is possible that the GNSS satellite antennas exhibit non-nominal performance in the transmitted power. An analysis and evaluation of the navigation signal quality require the investigation of such cases. To this end, this study describes a methodology for the estimation and reconstruction of non-absolute GNSS satellite antenna gain patterns, focusing on satellites of the Galileo navigation system. A key feature of the presented strategy is the employed setup of reduced complexity, which includes a low-gain antenna that allows monitoring signals from several navigation satellites at the same time. The results obtained pave the way for future multi-satellite, multi-constellation analyses of transmitted signal power, which may significantly support safety-critical applications. Additionally, the presented methodology may serve as the basis for the reconstruction of absolute antenna gain patterns, which are of particular interest for GNSS reflectometry applications.

Item URL in elib:https://elib.dlr.de/133390/
Document Type:Article
Title:Reconstructing antenna gain patterns of Galileo satellites for signal power monitoring
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Allende Alba, GerardoGerardo.AllendeAlba (at) dlr.dehttps://orcid.org/0000-0003-1257-9454
Thoelert, Steffensteffen.thoelert (at) dlr.dehttps://orcid.org/0000-0003-4653-318X
Date:1 January 2020
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:24
DOI :10.1007/s10291-019-0937-9
Publisher:Springer
ISSN:1080-5370
Status:Published
Keywords:Satellite antenna gain pattern, GNSS transmit power, Galileo signal monitoring, non-nominal navigation signal power
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben GNSS2/Neue Dienste und Produkte
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Allende Alba, Gerardo
Deposited On:09 Jan 2020 10:19
Last Modified:09 Jan 2020 10:19

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