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A Multi-Technique Approach for Characterizing the SVN49 Signal Anomaly - Part 2: Chip Shape Analysis

Thoelert, Steffen and Meurer, Michael and Erker, Stefan and Montenbruck, Oliver and Hauschild, Andre and Fenton, Pat (2012) A Multi-Technique Approach for Characterizing the SVN49 Signal Anomaly - Part 2: Chip Shape Analysis. GPS Solutions, 16 (1), pp. 29-39. Springer. DOI: 10.1007/s10291-011-0204-1 ISSN 1080-5370

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Official URL: http://link.springer.com/article/10.1007/s10291-011-0204-1


Due to a satellite internal reflection at the L5 test payload, the SVN49 (PRN1) GPS satellite exhibits a static multipath on the L1 and L2 signals that results in elevation dependent tracking errors for terrestrial receivers. Using a 30m high-gain antenna, code and carrier phase measurements as well as raw in-phase and quadrature radio-frequency samples have been collected during a series of zenith passes in mid April 2010 to characterize the SVN49 multipath and its impact on common users. Following an analysis of the receiver tracking data and the IQ constellation provided in Part 1 of this study, the present Part 2 provides an in-depth investigation of chip shapes for the L1 and L2 signals. A single reflection model is found to be compatible with the observed chip shape distortions and key parameters for an elevation dependent multipath model are derived. A good agreement is found for multipath parameters derived independently from raw IQ-Samples and measurements of a so-called Vision Correlator. The chip shapes and their observed variation with elevation can be used to predict the multipath response of different correlator types within a tracking receiver. The multipath model itself is suitable for implementation in a signal simulator and thus enables laboratory testing of actual receiver hardware.

Item URL in elib:https://elib.dlr.de/68267/
Document Type:Article
Title:A Multi-Technique Approach for Characterizing the SVN49 Signal Anomaly - Part 2: Chip Shape Analysis
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thoelert, Steffensteffen.thoelert (at) dlr.deUNSPECIFIED
Meurer, Michaelmichael.meurer (at) dlr.deUNSPECIFIED
Erker, Stefanstefan.erker (at) dlr.deUNSPECIFIED
Montenbruck, Oliveroliver.montenbruck (at) dlr.deUNSPECIFIED
Hauschild, Andreandre.hauschild (at) dlr.deUNSPECIFIED
Fenton, PatNovatel Inc.UNSPECIFIED
Date:January 2012
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s10291-011-0204-1
Page Range:pp. 29-39
Keywords:Multipath, SVN49; PRN1; IQ sampling; impulse response; chip shape; vision correlator
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignment
DLR - Research area:Space
DLR - Program:W - no assignment
DLR - Research theme (Project):W - no assignment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Space Operations and Astronaut Training
Deposited By: Thölert, Steffen
Deposited On:12 Jan 2011 09:29
Last Modified:13 Jan 2014 09:26

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