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A real-time operational procedure for GPS TEC - based reconstruction of the electron profile at a single ionosonde location

Stankov, S. M. and Warnant, R. and Jodogne, J. C. (2002) A real-time operational procedure for GPS TEC - based reconstruction of the electron profile at a single ionosonde location. In: Geophysical Research Abstracts, ABS No. EGS02-A-05554, 4. Proc. EGS XXVII General Assembly, 2002-04-21 - 2002-04-26, Nice, France. ISSN 1029-7006

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Official URL: http://www.cosis.net/abstracts/EGS02/05554/EGS02-A-05554.pdf

Abstract

The propagation delays in GNSS, introduced by the ionosphere, can be estimated and corrected much easier if the (vertical) electron density profile is available at a given location on a real-time basis. As the theoretical ionospheric models are not sufficiently good for the purpose, actual on-line measurements immediately available should be considered. Presented is a robust procedure for real-time reconstruction of the electron density profile from concurrent GPS TEC and ionosonde measurements. On the one hand, the on-line ionosonde measurements are used primarily for the reconstruction of the bottom-side profile. On the other hand, the ionosonde data together with simultaneously-measured TEC and upper transition level information, are required and used for determination of the topside electron profile. It is important that the method provides variable topside scale height, and the crucial information for this variability comes from measurements of the oxygen-hydrogen ion transition height, where the largest change in the electron density gradient occur. The procedure is demonstrated and tested on actual GPS TEC and digital ionosonde data obtained at the Dourbes Geophysics Centre of the Royal Meteorological Institute of Belgium. At this center, a GPS receiver is collocated with a digital ionosonde, capable of producing TEC values every 15 minutes. Measurements have been conducted since 1994 and a large TEC database created for the best part of the current solar activity cycle.

Document Type:Conference or Workshop Item (Speech)
Title:A real-time operational procedure for GPS TEC - based reconstruction of the electron profile at a single ionosonde location
Authors:
AuthorsInstitution or Email of Authors
Stankov, S. M.UNSPECIFIED
Warnant, R.Royal Observatory of Belgium
Jodogne, J. C.Royal Meteorological Institute of Belgium
Date:April 2002
Journal or Publication Title:Geophysical Research Abstracts, ABS No. EGS02-A-05554
Volume:4
ISSN:1029-7006
Status:Published
Keywords:Ionosphere, GPS, TEC
Event Title:Proc. EGS XXVII General Assembly
Event Location:Nice, France
Event Type:international Conference
Event Dates:2002-04-21 - 2002-04-26
Organizer:EGS
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Ionosphärenerkundung (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Dr. Stanimir Stankov
Deposited On:14 Nov 2006
Last Modified:14 Jan 2010 23:43

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