Assessing Space-based GNSS Technology for Meteorological Studies in Australia

Erjiang Fu

Abstract:	Since the first low earth orbit (LEO) satellite equipped with a GPS receiver was launched in early 1990s, there are more than a dozen of GPS receivers onboard LEO satellites for Earth atmospheric observation. Thousands of daily global distributed GPS radio occultation (RO) events are captured by these LEO satellites. Recent research has shown that the Global Navigation Satellite System (GNSS) RO derived atmospheric profiles have great potentials for meteorological studies since it can overcome many limitations of existing atmospheric observation methods. To fully exploit the usability of this emerging technology in Australia, it is critical to analyse the characteristics of the GNSS RO retrievals error for an optimal solution of assimilating this new source of data into current meteorological framework. Comprehensive assessments of GPS RO retrievals (CHAMP and COSMIC) have been conducted by using both numerical weather model (NCEP) and radiosonde in the Australian region. The results demonstrated good accuracy of the GNSS RO derived atmospheric information.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	271 - 276
Cite this article:	Fu, Erjiang, "Assessing Space-based GNSS Technology for Meteorological Studies in Australia," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 271-276.
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