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Multi-GNSS Signal-in-Space Range Error Assessment - Methodology and Results

Montenbruck, Oliver and Steigenberger, Peter and Hauschild, Andre (2018) Multi-GNSS Signal-in-Space Range Error Assessment - Methodology and Results. Advances in Space Research, 61 (12), pp. 3020-3038. Elsevier. doi: 10.1016/j.asr.2018.03.041. ISSN 0273-1177.

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The positioning accuracy of global and regional navigation satellite systems (GNSS/RNSS) depends on a variety of influence factors. For constellation-specific performance analyses it has become common practice to separate a geometry-related quality factor (the dilution of precision, DOP) from the measurement and modeling errors of the individual ranging measurements (known as user equivalent range error, UERE). The latter is further divided into user equipment errors and contributions related to the space and control segment. The present study reviews the fundamental concepts and underlying assumptions of signal-in-space range error (SISRE) analyses and presents a harmonized framework for multi-GNSS performance monitoring based on the comparison of broadcast and precise ephemerides. The implications of inconsistent geometric reference points, non-common time systems, and signal-specific range biases are analyzed, and strategies for coping with these issues in the definition and computation of SIS range errors are developed. The presented concepts are, furthermore, applied to current navigation satellite systems, and representative results are presented along with a discussion of constellation-specific problems in their determination. Based on data for the January to December 2017 time frame, representative global average root-mean-square (RMS) SISRE values of 0.2m, 0.6m, 1m, and 2m are obtained for Galileo, GPS, BeiDou-2, and GLONASS, respectively. Roughly two times larger values apply for the corresponding 95th percentile values. Overall, the study contributes to a better understanding and harmonization of multi-GNSS SISRE analyses and their use as key performance indicators for the various constellations.

Item URL in elib:https://elib.dlr.de/119955/
Document Type:Article
Title:Multi-GNSS Signal-in-Space Range Error Assessment - Methodology and Results
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Montenbruck, OliverDLR/GSOChttps://orcid.org/0000-0003-4783-745X
Steigenberger, PeterDLR/GSOChttps://orcid.org/0000-0003-1905-6699
Hauschild, Andreandre.hauschild (at) dlr.dehttps://orcid.org/0000-0002-0172-3492
Journal or Publication Title:Advances in Space Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.asr.2018.03.041
Page Range:pp. 3020-3038
Keywords:GNSS performance monitoring, SISRE, DOP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:22 May 2018 10:25
Last Modified:06 Sep 2019 15:27

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