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Performance of GBS Over WGS1, 2, 3 Using DVB-S and DVB-S2
February 2010
Bruce Bennett, DISA
Dan Hannan, SMDC, ARSTRAT
Gerry Fitzgerald, The MITRE Corporation
George Kinal, The MITRE Corporation
Jim Marshall, The MITRE Corporation
Richard Gibbons, The MITRE Corporation
ABSTRACT
The Wideband Global System (WGS) is currently operational in the Pacific Ocean using WGS1 (175E). GBS traffic is supported in that theater today using the Digital Video Broadcast by Satellite (DVB-S) and operates using terminals originally designed for operation using the UHF Follow-On satellite (UFO8). These terminals can now operate over WGS1 and UFO8. GBS is planned to migrate to the JIPM in 2010. The Joint IP Modem (JIPM) will use the second generation DVB-S2 which represents a quantum leap in capability over DVB-S in terms of its power and bandwidth efficiency. Further the JIPM allows hub-spoke operation between a control center at a Teleport and the remote terminals equipped with a remote Modem.
This paper will address the data rate performance of GBS terminals using the current DVB-S and the JIPM DVB-S2 over WGS1 (175E), WGS2 (60E) and WGS3 (12W). First, a reference link is defined based on the Next Generation Receive Terminal (NGRT). Next data rates will be determined for the reference link based on WGS measured WGS1 data. Finally global availability maps will be determined for the reference link when operating globally over WGS1, WGS2 and WGS3 using WGS Ka-band beams.
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