elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

HIGHER ORDER IONOSPHERIC ERRORS IN MODERNIZED GPS AND FUTURE GALILEO SYSTEMS

Hoque, Mohammed Mainul und Jakowski, Norbert (2010) HIGHER ORDER IONOSPHERIC ERRORS IN MODERNIZED GPS AND FUTURE GALILEO SYSTEMS. Space Science, Exploration and Policies, Global. Nova Science Publishers. ISBN 978-1-60741-012-6.

[img] PDF - Nur angemeldete Benutzer - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Offizielle URL: https://www.novapublishers.com/catalog/product_info.php?products_id=9383

Kurzfassung

Modernized GPS and future Galileo systems will transmit a third frequency allowing to cancel out the first and second order ionospheric terms in the refractive index by double differencing carrier phases or code pseudoranges. However, differential bending of the signal and third order ionospheric term are not fully removed in this approach. This work estimates the magnitude of various higher order ionospheric errors using a large number of ionospheric vertical profiles reconstructed from CHAMP-GPS radio occultation measurements. Our investigation shows that triple-frequency residual range errors become significant at low elevation angles (< 15°) and at high level of total electron content. The triple-frequency residual range error reaches up to 1 and 4 cm at 5° elevation angle in carrier-phase and pseudo-range measurements, respectively. Different approximation formulas have been discussed to mitigate higher order ionospheric errors in operating satellite positioning systems. The Galileo system will allow four frequencies to be used for higher order ionospheric corrections. It has been found that ionospheric effects are successfully removed in quadruple-frequency measurements, i.e., no ionospheric correction is required in the range estimation. However, quadruple-frequency measurements for the ionospheric correction are not practically useful since the measurement noise exceeds the ionospheric correction.

Dokumentart:Lehr- oder Fachbuch
Titel:HIGHER ORDER IONOSPHERIC ERRORS IN MODERNIZED GPS AND FUTURE GALILEO SYSTEMS
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Hoque, Mohammed MainulMainul.Hoque@dlr.de
Jakowski, NorbertNorbert.Jakowski@dlr.de
Datum:2010
Referierte Publikation:Ja
Band:Global
Seitenbereich:Seiten 1-28
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
Asphaug, ViggoNICHT SPEZIFIZIERT
Sorensen, EliasNICHT SPEZIFIZIERT
Verlag:Nova Science Publishers
Name der Reihe:Space Science, Exploration and Policies
ISBN:978-1-60741-012-6
Status:veröffentlicht
Stichwörter:Higher order ionospheric errors, GNSS positioning, correction formulas
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Weltraumwetter (alt)
Standort: Neustrelitz
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Mohammed Mainul Hoque
Hinterlegt am:29 Jun 2011 09:00
Letzte Änderung:26 Jan 2016 11:10

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.