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Comparison of Constant and Non-constant Envelope Signals for Satellite Navigation

Beck, Florian C. and Enneking, Christoph and Thölert, Steffen and Antreich, Felix (2022) Comparison of Constant and Non-constant Envelope Signals for Satellite Navigation. In: 10th Workshop on Satellite Navigation Technology, NAVITEC 2022. 10th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2022-04-05 - 2022-04-07, Virtual. doi: 10.1109/NAVITEC53682.2022.9847554. ISBN 978-166541616-0.

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Abstract

The use of constant envelope signals for global navigation satellite systems (GNSS) has a long tradition. These signals allow the satellite payload’s high power amplifier (HPA) to be driven in saturation, hence with a very low output power backoff (OBO) and high efficiency. For non-constant envelope signals, the HPA’s input power must be carefully chosen near the transition of linear region and saturation region, not to distort the shape of the code-division multiple access (CDMA) waveforms too much − distortions would otherwise lead to a correlation loss at the GNSS receiver. In this paper, we revisit some nonconstant envelope CDMA waveforms with raised-cosine (RC) or prolate spheroidal wave function (PSWF) pulse shapes, and try to give a fair comparison with constant envelope waveforms with conventional binary phase-shift keying (BPSK) or frequencyhopping binary offset carrier (FHBOC) spreading. We also address how the operation of the HPA requires a careful trade-off between losses caused by OBO, filtering losses by the payload’s output multiplexer (OMUX) and the receiver front-end, as well as receiver correlation loss. Performance is compared in terms of achievable receiver signal-to-noise ratio (SNR) and time of arrival (TOA) estimation error variance. The results suggest that the constant envelope signals’ advantage of low OBO is often expended by filtering losses, such that band-limited non-constant envelope spreading waveforms may be an interesting option for future GNSS signal design.

Item URL in elib:https://elib.dlr.de/186232/
Document Type:Conference or Workshop Item (Speech)
Title:Comparison of Constant and Non-constant Envelope Signals for Satellite Navigation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Beck, Florian C.UNSPECIFIEDhttps://orcid.org/0000-0002-8122-6209UNSPECIFIED
Enneking, ChristophUNSPECIFIEDhttps://orcid.org/0000-0001-6049-125XUNSPECIFIED
Thölert, SteffenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Antreich, FelixInstituto Tecnológico de Aeronáutica (ITA), Brazilhttps://orcid.org/0000-0001-6596-0123UNSPECIFIED
Date:15 February 2022
Journal or Publication Title:10th Workshop on Satellite Navigation Technology, NAVITEC 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1109/NAVITEC53682.2022.9847554
ISBN:978-166541616-0
Status:Published
Keywords:GNSS Signals; High power amplifier; pulse shaping
Event Title:10th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)
Event Location:Virtual
Event Type:international Conference
Event Start Date:5 April 2022
Event End Date:7 April 2022
Organizer:ESA Conference Bureau
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Project Navigation 4.0
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Beck, Florian Christian
Deposited On:16 May 2022 11:45
Last Modified:24 Apr 2024 20:47

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