Extended Abstract (1.4M)P2.3
GOES/R data distribution via commercial terrestrial and C-band satellite systems
Richard H. Warren, Computer Sciences Corporation, Chantilly, VA; and S. N. Bajpai
Data rates from the future GOES-R (planned to be launched in 2012 time frame) will be substantially higher than that of current (2.1 Mbps). The current down link, ground and distribution systems will not be adequate; the data cannot be distributed to the users. Therefore, several studies are being conducted to explore flexible, reliable and cost effective options. A Study was conducted to explore engineering aspects of using commercial communication systems to distribute/re-broadcast GOES-R data.
This paper presents highlights of the commercial terrestrial as well as satellite technologies that are expected to be available in 2008 time frame, as a possible alternative to using GOES to re-broadcast . The number of broadband (satellite, cable TV modem, xDSL) subscribers is projected to be substantially higher than today. The terrestrial systems, access technologies and their characteristics are described.
For NOAA applications, satellite broadcast at C–band (around 4 GHz) was studied. The C-band has an advantage (over Ka, Ku and higher bands) of being less sensitive to rain/heavy rain when we need the data most in severe weather. The paper also provides available/planned satellite systems, their coverage maps, cost estimates, antenna sizes, etc. The future communications technology trends are also presented.
The GOES-R will in place around 2012; will be in operation for another 15 years. The communications technology is changing rapidly. Therefore, the data distribution concept described in this paper would allow NOAA a considerable long-term flexibility and choice of available commercial services. The service could be replaced as needed, expanded to accommodate more data, discontinued if another technology becomes available that is more efficient, reliable and cost effective etc. Since data re-broadcast would be achieved by commercial services, GOES-R satellite would not have its own re-broadcast communication sub-system. This would result in higher degree of GOES-R system reliability (or less complexity) and potential cost savings.
Dr. Shyam N. Bajpai is with NOAA/NESDIS. He can be reached at: NOAA/NESDIS/Office of Systems Development, SSMC1, 5218 Silver Spring, MD 20910
Poster Session 2, IIPS Poster Session II
Wednesday, 14 January 2004, 2:30 PM-4:00 PM, Room 4AB
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