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Aeronautical Ku-band Satellite Communication Single Focus Workshop 25 March 2010

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Aeronautical Ku-band Satellite Communication Single Focus Workshop 25 March 2010. Peter Lemme. KU Band. Formed in Dec 2007 ARINC 791 Part 1: Provisions (form and fit) March 2011 Part 2: Protocols (function) March 2012. Ku-band Technical Working Group. Airlines

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Aeronautical Ku-band Satellite Communication Single Focus Workshop 25 March 2010
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  1. Aeronautical Ku-band Satellite Communication Single Focus Workshop25 March 2010 Peter Lemme

  2. KU Band

  3. Formed in Dec 2007 ARINC 791 Part 1: Provisions (form and fit) March 2011 Part 2: Protocols (function) March 2012 Ku-band Technical Working Group

  4. Airlines Delta, Lufthansa, KLM Airbus and Boeing Antenna, Radome, KRFU, KANDU TECOM, Cobham, AeroSat, EMS, Viasat, ThinKom, QEST, Starling Components EMS, Rockwell Collins,ITS Electronics, Gore, COMDEV, Tyco, Saint-Gobain, Souriau Service Provider (ModMan, Space Segment, Internet Gateway, Billing, Operations) Panasonic, Row 44 Others DDEi, AEEC, Aircell Working Group Participants

  5. Geo-Stationary Orbit (GSO) Multiple transponders for full or partial lease Each transponder is 36-72 MHz wide Single transponder can cover a whole continent Most coverage over populated regions Designed for 0.8 to 1.2 meter fixed terminal Terminal transmit 13.75 to 14.50 GHz Terminal receive 10.7 to 12.75 GHz Ku-band Satellite

  6. Transmission power spectral density under strict limits from two degrees of the target satellite Antenna transmit beamwidth most critical factor for compliance Aero antennas may not comply in some conditions Spread Spectrum Reduce EIRP Interference

  7. GSO Beamwidth Skew angle EIRP Achieved beam steering accuracy Spreading factors and modulations Other interference considerations Radio Astronomy Non-GSO operators Transmit Limitations

  8. Spectral Efficiency (bps per Hz) Modulation, Coding, Spreading As high as 1.0 under favorable scenarios Typical efficiency perhaps 0.3 Less then 0.1 under demanding scenarios Data Link Efficiency

  9. Received at the airplane Forward Channel Single transponder 10 to 50 Mbps (shared) May receive multiple transponders for nearly limitless bandwidth Transmitted from the airplane Return Channel Single Channel Data rates typically 64 kbps to 1 Mbps Data Rates

  10. Ku-band Steerable-Array Antenna

  11. Two frame spacings Seven fittings 32” to 37” swept volume 10” to 12” radome height Aircraft Antenna Installation

  12. Aeronautical Mobile Satellite Service (AMSS) ITU S.728-1 (psd) ETSI EN 301 428 V1.3.1 (psd) FCC 25.209 (gain), 25.222 (psd) Availability is not assured Secondary Allocation Regulatory

  13. Optimum situation small azimuth beamwidth across GSO Troublesome situation wide elevation beamwidth across GSO Roll angle Tropic latitudes Skew Angle

  14. Flat Plate 0.16 m x 0.90 m Versus Circular 0.45 m diameter

  15. Bird strike Environmental Qualification Aircraft blockages Beam steering Other Issues and Concerns

  16. Summary • ARINC 791 will lead to common provisions and interchangeable components • Viable technology • Ku band forward channel capacity is unmatched • Ku band return channel data rate is competitive with any other radio system • Coverage is subject to market demand