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Title: GPS radio occultation on-board the OCEANSAT-2 mission: An Indian (ISRO) – Italian (ASI) collaboration
Authors: Perona, Giovanni
Notarpietro, Riccardo
Gabella, Marco
Keywords: Global positioning system (GPS);Radio occultation;Oceansat-2;Radio occultation sounder of the atmosphere (ROSA)
Issue Date: Oct-2007
Publisher: CSIR
Abstract: In the first quarter of 2008, the Indian satellite OCEANSAT-2 will be launched. The Italian Space Agency (ASI) signed a Memorandum of Understandings with the Indian Space Research Organization (ISRO) in which it is agreed to put on-board the OCEANSAT-2 satellite the Italian GNSS receiver devoted to Radio Occultation (ROSA–Radio Occultation Sounder of the Atmosphere). The ROSA receiver has been developed with a new-concept hardware configuration with respect to that normally characterizing a GNSS receiver: it will track the GPS “occulted” signal both just before its setting and just after its rising from the local horizon using an open loop technique, and it will automatically switch from (or to) the standard closed loop approach when the signal crosses higher atmospheric regions. Observations from ROSA will be downloaded both to the Indian and the Italian receiving stations where they will be processed by the ROSA Ground Segment, developed by Italian universities and research centres. In particular, the first version of the processing software will be integrated in a ground segment installed in Matera (Italy) and mirrored at Hyderabad (India). Its second version will be installed in a distributed ground segment implemented by connecting, on a web-based GRID, hardware and software infrastructures installed at the research centres and universities involved in its development.
Page(s): 386-393
ISSN: 0367-8393
Appears in Collections:IJRSP Vol.36(5) [October 2007]

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