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Mitigation of higher order ionospheric effects on GNSS users in Europe

Hoque, Mohammed Mainul and Jakowski, Norbert (2006) Mitigation of higher order ionospheric effects on GNSS users in Europe. GPS Solutions. Springer Berlin / Heidelberg. DOI: 10.1007/s10291-007-0069-5. ISSN 1521-1886.

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Official URL: http://www.springerlink.com/content/b6w5874410t73jhp/

Abstract

Current dual-frequency GPS measurements can only eliminate the first-order ionospheric term and may cause a higher-order range bias of several centimeters. This research investigates the second-order ionospheric effect for GNSS users in Europe. In comparison to previous studies, the electron density profiles of the ionosphere/plasmasphere are modeled as the sum of three Chapman layers describing electron densities of the ionospheric F<sub>2</sub>, F<sub>1</sub> and E layers and a superposed exponential decay function describing the plasmasphere. The International Geomagnetic Reference Field model is used to calculate the geomagnetic field vectors at numerous points along the incoming ray paths. Based on extended simulation studies, we derive a correction formula to compute the average value of the longitudinal component of the earth’s magnetic field along the line-of-sight as a function of geographic latitude and longitude, and geometrical parameters such as elevation and azimuth angles. Using our correction formula in conjunction with the total electron content along the line-of-sight, the second-order ionospheric term can be corrected to the millimeter level for a vertical total electron content level of 10<sup>18</sup> electrons/m<sup>2</sup>.

Document Type:Article
Title:Mitigation of higher order ionospheric effects on GNSS users in Europe
Authors:
AuthorsInstitution or Email of Authors
Hoque, Mohammed MainulUNSPECIFIED
Jakowski, NorbertUNSPECIFIED
Date:29 November 2006
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
In ISI Web of Science:No
DOI:10.1007/s10291-007-0069-5
Publisher:Springer Berlin / Heidelberg
ISSN:1521-1886
Status:Published
Keywords:GNSS positioning, signal refraction, second-order ionospheric correction
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Weltraumwetter (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Mohammed Mainul Hoque
Deposited On:06 Aug 2007
Last Modified:15 Jan 2010 01:27

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