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Pseudorange bias from inter-signal interference: the QZSS L5-L5S case

Sleewaegen, Jean-Marie and Montenbruck, Oliver and Steigenberger, Peter (2023) Pseudorange bias from inter-signal interference: the QZSS L5-L5S case. GPS Solutions, 27 (3). Springer. doi: 10.1007/s10291-023-01490-w. ISSN 1080-5370.

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Analysis of the bias between Quasi-Zenith Satellite System (QZSS) L5-Q and L5-I pseudoranges reveals decimeter-level variations over the satellite passes, a phenomenon that is not observed on any other GNSS signal. The paper provides a study of this QZSS peculiarity. It is shown that the bias depends on the orientation of the line-of-sight vector with respect to the transmit antenna panel of the QZSS satellite, and that the amplitude of its variation is satellite dependent. The cause of the L5 bias is identified as interference from the L5S signal transmitted by QZSS satellites at the same frequency and from a different antenna. The interference introduces a distortion of the correlation peak dependent on the primary and secondary code selected for the L5 and L5S signals and on the relative delay and phase between the received L5 and L5S signals. This distortion induces tracking biases affecting pseudoranges produced using the pilot signal component. A theoretical model of the interference is provided, and it is shown that the bias variation can be accurately modeled and compensated for if L5 and L5S measurements are available.

Item URL in elib:https://elib.dlr.de/195642/
Document Type:Article
Title:Pseudorange bias from inter-signal interference: the QZSS L5-L5S case
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Sleewaegen, Jean-MarieSeptentrio Satellite Navigation, Leuven, Belgiumhttps://orcid.org/0000-0001-9482-5385UNSPECIFIED
Montenbruck, OliverDLR/GSOChttps://orcid.org/0000-0003-4783-745XUNSPECIFIED
Steigenberger, PeterDLR/GSOChttps://orcid.org/0000-0003-1905-6699137527798
Date:24 June 2023
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:GNSS biases, Inter-signal interference, QZSS
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):R - Infrastructure, Flight Dynamics, GPS
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training
Deposited By: Montenbruck, Dr.rer.nat.hab. Oliver
Deposited On:26 Jun 2023 08:45
Last Modified:26 Jun 2023 08:45

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