35th AIAA ICSSC Colloquium: High Throughput Satellite (HTS) Broadband Opportunities: Orbits, Architectures, Spectrum, Interference and Markets
Trieste, October 16, 2017
Current Status of High Throughput Satellites Marc Agnew, ViaSat
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High Throughput Satellites Not all created equally
0 50 100 150 200 250 300
Anik F2 - 2004IPStar - 2005
WildBlue 1 - 2006Spaceway 3 - 2007
KASAT - 2010ViaSat 1 - 2011
Juipiter 1 - 2012Imarsat 5-F1 (GX) - 2013
Intesat 29e - 2016Jupiter 2 - 2017ViaSat-2 - 2018
Estimated Throughput (Gbps)
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Broad Beam Replacements Incumbent’s Strategy
• Incremental Improvements • Multi-mission payloads • Open Systems
Intelsat Epic (29e ku-band coverage shown)
Eutelsat 172b (ka-band coverage shown) 3
Global Coverage Augmentation Coverage over Throughput
• Protect Existing Businesses served by Global L-band network
• Emphasis on Coverage, not Capacity • Establish Ecosystem
• Equipment providers • Sales and distribution
Inmarsat GX Constellation 89 fixed & 6 steerable ka-band spot beams
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Regional Disruptors Capacity over Coverage • Emphasis on Bandwidth Economics • Address Consumer Market • Disrupt Satellite Incumbents
KASAT 82 Ka-band spot beams
ViaSat-1 72 Ka-band spot beams 5
LEO & MEO Constellations Redux • OneWeb, SpaceX, 03b, Others
• 10s to 100s to 1000s of satellites
• Uniform (Global) Coverage
• Lower Latency
• Technology Refresh
• But…70% of the world’s surface is covered by water
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Future Trends Terabit Satellites
Improve Economics • Bigger payloads • More, smaller spots • More spectrum
Coverage Flexibility • Demand isn’t uniform • Put the capacity where it’s needed
Global to Address Many Markets • Residential • Enterprise • Aeronautical • Maritime • Government
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Thank You