Validation of the EGSIEM-REPRO GNSS Orbits and Satellite Clock Corrections

In the framework of the European Gravity Service for Improved Emergency Management (EGSIEM) project, consistent sets of state-of-the-art reprocessed Global Navigation Satellite System (GNSS) orbits and satellite clock corrections have been generated. The reprocessing campaign includes data starting...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2020-07, Vol.12 (14), p.2322
Main Authors: Sušnik, Andreja, Grahsl, Andrea, Arnold, Daniel, Villiger, Arturo, Dach, Rolf, Beutler, Gerhard, Jäggi, Adrian
Format: Article
Language:English
Subjects:
Ambiguity
Emergency management
Emergency preparedness
Global navigation satellite system
Global positioning systems
GLONASS
GNSS orbits
GNSS satellite clock corrections
GPS
GRACE (experiment)
Gravity
LEO POD
Orbit determination
Orbits
precise point positioning
Project management
Remote sensing
Reprocessing
Sampling
Satellite laser ranging
Satellite navigation systems
Satellite orbits
Satellites
SLR validation
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Summary:In the framework of the European Gravity Service for Improved Emergency Management (EGSIEM) project, consistent sets of state-of-the-art reprocessed Global Navigation Satellite System (GNSS) orbits and satellite clock corrections have been generated. The reprocessing campaign includes data starting in 1994 and follows the Center for Orbit Determination in Europe (CODE) processing strategy, in particular exploiting the extended version of the empirical CODE Orbit Model (ECOM). Satellite orbits are provided for Global Positioning System (GPS) satellites since 1994 and for Globalnaya Navigatsionnaya Sputnikovaya Sistema (GLONASS) since 2002. In addition, a consistent set of GPS satellite clock corrections with 30 s sampling has been generated from 2000 and with 5 s sampling from 2003 onwards. For the first time in a reprocessing scheme, GLONASS satellite clock corrections with 30 s sampling from 2008 and 5 s from 2010 onwards were also generated. The benefit with respect to earlier reprocessing series is demonstrated in terms of polar motion coordinates. GNSS satellite clock corrections are validated in terms of completeness, Allan deviation, and precise point positioning (PPP) using terrestrial stations. In addition, the products herein were validated with Gravity Recovery and Climate Experiment (GRACE) precise orbit determination (POD) and Satellite Laser Ranging (SLR). The dataset is publicly available.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs12142322