Article (Scientific journals)
Computation of GPS P1–P2 Differential Code Biases with JASON-2
Wautelet, Gilles; Loyer, Sylvain; Mercier, Flavien et al.
2017In GPS Solutions
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Keywords :
GPS; Differential Code Biases; Plasmasphere; Total electron content
Abstract :
[en] GPS Differential Code Biases (DCBs) computation is usually based on ground networks of permanent stations. The drawback of the classical methods is the need for the ionospheric delay so that any error in this quantity will map into the solution. Nowadays, many low-orbiting satellites are equipped with GPS receivers which are initially used for precise orbitography. Considering spacecrafts at an altitude above the ionosphere, the ionized contribution comes from the plasmasphere, which is less variable in time and space. Based on GPS data collected onboard JASON-2 spacecraft, we present a methodology which computes in the same adjustment the satellite and receiver DCBs in addition to the plasmaspheric vertical total electron content (VTEC) above the satellite, the average satellite bias being set to zero. Results show that GPS satellite DCB solutions are very close to those of the IGS analysis centers using ground measurements. However, the receiver DCB and VTEC are closely correlated, and their value remains sensitive to the choice of the plasmaspheric parametrization.
Disciplines :
Space science, astronomy & astrophysics
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Earth sciences & physical geography
Author, co-author :
Wautelet, Gilles  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Loyer, Sylvain;  Collecte Localisation Satellites (CLS)
Mercier, Flavien;  Centre National d'Etudes Spatiales (CNES)
Perosanz, Félix;  Centre National d'Etudes Spatiales (CNES)
Language :
English
Title :
Computation of GPS P1–P2 Differential Code Biases with JASON-2
Publication date :
2017
Journal title :
GPS Solutions
ISSN :
1080-5370
eISSN :
1521-1886
Publisher :
Springer, Heidelberg, Germany
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CNES - Centre National d'Études Spatiales [FR]
Available on ORBi :
since 22 May 2017

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