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GPS IIR‐M L1 Transmit Power Redistribution: Analysis of GNSS Receiver and High‐Gain Antenna Data

Thoelert, Steffen and Hauschild, Andre and Steigenberger, Peter and Langley, Richard and Antreich, Felix (2018) GPS IIR‐M L1 Transmit Power Redistribution: Analysis of GNSS Receiver and High‐Gain Antenna Data. Navigation, Journal of the Institute of Navigation, 65 (3), pp. 423-430. Wiley. doi: 10.1002/navi.250. ISSN 0028-1522.

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Official URL: https://onlinelibrary.wiley.com/doi/10.1002/navi.250


All seven operational GPS Block IIR‐M satellites experienced short maintenance periods in February 2017. It was later identified that the satellites' transmit power of different L1 signal components had been changed during this maintenance. The total radiated power of the satellites remains constant, but the powers of the C/A‐code and the P(Y)‐code signals have increased while the powers of the M‐code and the intermodulation product have reduced. Further examination reveals a more efficient use of the total available power on the spacecraft as more power is available for the three navigation signals on L1. Observations from geodetic GNSS receivers were analyzed to demonstrate the effect of the change in L1 signal power distribution on the measured C/N0 of the C/A‐code and P(Y)‐code for different receiver types. High‐gain antenna data collected before and after the maintenance periods are used to analyze improved utilization of the available power through the reduction of the losses caused by the intermodulation product.

Item URL in elib:https://elib.dlr.de/122064/
Document Type:Article
Title:GPS IIR‐M L1 Transmit Power Redistribution: Analysis of GNSS Receiver and High‐Gain Antenna Data
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Thoelert, SteffenUNSPECIFIEDhttps://orcid.org/0000-0003-4653-318XUNSPECIFIED
Hauschild, AndreUNSPECIFIEDhttps://orcid.org/0000-0002-0172-3492UNSPECIFIED
Steigenberger, PeterDLR/GSOChttps://orcid.org/0000-0003-1905-6699137344724
Antreich, FelixFederal University of Ceará (UFC), Fortaleza, BrazilUNSPECIFIEDUNSPECIFIED
Date:November 2018
Journal or Publication Title:Navigation, Journal of the Institute of Navigation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 423-430
Keywords:GNSS; GPS; GPS IIR-M; GPS L1; GNSS Receiver; High gain antenna; Transmit power
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 - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Space Operations and Astronaut Training > Space Flight Technology
Deposited By: Thölert, Steffen
Deposited On:23 Nov 2018 13:53
Last Modified:02 Nov 2023 09:36

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