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Ziv-Zakai Bound and Multicorrelator Compression for a Galileo E1 Meta-Signal

Schwalm, Carolin and Enneking, Christoph and Thölert, Steffen (2020) Ziv-Zakai Bound and Multicorrelator Compression for a Galileo E1 Meta-Signal. In: 2020 European Navigation Conference, ENC 2020. European Navigation Conference (ENC) 2020, 2020-11-23 - 2020-11-24, Dresden, Deutschland. doi: 10.23919/ENC48637.2020.9317389. ISBN 978-394497627-3.

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We discuss robustness and accuracy of time of arrival (ToA) estimation using meta-signal combining (MSC). MSC is a receive strategy to process multiple navigation signals as a single wideband signal, even though they are transmitted on different carrier frequencies. This strategy was originally proposed due its potentially high ToA estimation accuracy in combination with good spectral efficiency and power efficiency. Furthermore, it offers the possibility to make optimal use of legacy signals and newly added signal components; in this work, we focus on the example of the E1 open serivce (OS) and the forthcoming E1-D signal. We discuss estimation robustness against noise on the basis of the Ziv-Zakai Lower Bound (ZZLB); our analytical results reveal that without large carrier-to-noise density ratio or long observation times, autocorrelation sidelobes make it impossible for an unbiased ToA estimator to attain the excellent performance promised by the simpler Cramer-Rao Lower Bound (CRLB). Furthermore, we demonstrate that a carefully configured bank of correlators should be used in order to avoid further performance losses.

Item URL in elib:https://elib.dlr.de/138577/
Document Type:Conference or Workshop Item (Speech)
Title:Ziv-Zakai Bound and Multicorrelator Compression for a Galileo E1 Meta-Signal
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:23 November 2020
Journal or Publication Title:2020 European Navigation Conference, ENC 2020
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Meta-Signal; Global Navigation Satellite System; Correlator bank; Parameter estimation;
Event Title:European Navigation Conference (ENC) 2020
Event Location:Dresden, Deutschland
Event Type:international Conference
Event Start Date:23 November 2020
Event End Date:24 November 2020
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 - Project Navigation 4.0 (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Navigation
Deposited By: Enneking, Christoph
Deposited On:04 Dec 2020 15:44
Last Modified:24 Apr 2024 20:40

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