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Ionspheric Error Removal in the Positioning of LEO Satellites Based on Low cost GPS Receivers

Montenbruck, O. and Gill, E. (2001) Ionspheric Error Removal in the Positioning of LEO Satellites Based on Low cost GPS Receivers. 16th International Symposium on Spaceflight Dynamics, Pasadena, Dec. 3-7 2001.

Full text not available from this repository.

Abstract

A novel technique for the ionspheric correction of single frequency GPS measurements from satellites in low Earth orbit (LEO) is presented. The fractional total electron content (TEC) above the receiver altitude is obtained from global TEC maps of the IGS network and an altitude dependent scale factor. By choosing a suitable effective height of the residual ionosphere, the resulting path delay for positive elevations from the LEO satellite to the GPS satellites is computed using a thin layer approximation. The scale factor can either be predicted assuming a Chapman profile for the altitude variation of the electron density or adjusted as a free parameter in the processing of an extended set of singel frequency measurements. Based on flight data from the Champ satellite, that orbis the Earth at an altitude of 450 km, the developed algorithm allows for a 90 % correction of the ionospheric error in a reduced dynamic orbit determination, based on single frequency C/A code measurements.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2002,
Title:Ionspheric Error Removal in the Positioning of LEO Satellites Based on Low cost GPS Receivers
Authors:
AuthorsInstitution or Email of Authors
Montenbruck, O.UNSPECIFIED
Gill, E.UNSPECIFIED
Date:2001
Page Range:pp. 1-3
Status:Published
Keywords:Ionsphere, Champ, GPS, Orbit Detemination
Event Title:16th International Symposium on Spaceflight Dynamics, Pasadena, Dec. 3-7 2001
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 -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Hauptabteilung Raumflugbetrieb und Astronautenausbildung
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 17:23

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