Core Avionics Master Plan - NAVAIR - U.S. Navy

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Core Avionics Master Plan 2011 Appendix A-22. Advance Research and Technology Development.Extended L-Band (AlphaSat I-XL or INMARSAT XL). (2013-2017) INMARSAT isalso planning to provide Ka-band coverage for small mobile terminals requiring higherbandwidth. The AlphaSat is INMARSAT‟s new satellite, planned for launch in 2012. It isdesigned with increased capacity, 750 channels and 400-500 spot beams. Only one iscurrently planned for launch to provide additional capacity to Europe, the Middle Eastand Asia. AlphaSat will be operational in 2013 and provide the following benefits:Same service with smaller user equipmentHigher throughput with existing user equipmentSame throughput with existing equipment, with less satellite usage and lower costCross Linked Low Earth Orbit (LEO) Satellites (Iridium Next). (2015-2017)Iridium NEXT will provide continuous coverage over the entire Earth‟s surface. Eachsatellite will be cross-linked to four other satellites. These links will create a dynamicnetwork in space. Traffic will be routed among Iridium satellites without touching theground, ensuring a more reliable connection. Iridium NEXT‟s improvements will includedata rates up to 1 Mbps, Ka-band service, private network gateways, and broadcast andnetted services. In addition to providing voice and data communications, theconstellation will be able to host payloads that will allow partners to add capabilitiesusing Iridium satellite cross-links and earth side control centers to deliver sensor andother data to the partners who developed the payloads.D. Wideband SATCOM.1. Current capabilities.The Advanced Extremely High Frequency (AEHF) satellite will provide ten timesmore capacity and move data six times more efficiently than the five Milstar IIcommunications satellites currently in use. The higher data rates can send video,battlefield maps, targeting data and other communications in real time. The first AEHFsatellite was launched in 2010. AEHF will supply global, secure, jam-resistant andsurvivable strategic communications for high priority assets. E-6B currently employs aMilitary Strategic and Tactical Relay (MILSTAR) terminal and is a candidate for a newterminal to support the Extended Data Rate (XDR) capability of AEHF satellites. TheFamily of Advanced BLOS Terminals (FAB-T) was to provide this capability for airborneplatforms, but the future of that program is uncertain. A High Data Rate AirborneTerminal (HDRAT) is being analyzed to fulfill this function; however, it is not projected tobe available until 2017.The Wideband Global SATCOM (WGS) system is being launched to support DoD‟sincreasing demand for BLOS transmission of ISR data, specifically FMV. WGS is areplacement for the Defense Satellite Communications System (DSCS) and providesten times the capacity of DSCS. Each satellite provides up to 2-3 Gbps of capacity. Fivesatellites will provide a total capacity of approximately 11 Gbps by 2012. Each satellitehas multiple beams, each supporting a 125 Mhz channel which can be sub-divideddown to 2.6Mhz increments. Compressed FMV from existing EO/IR cameras requiresapproximately 5 Mbps. WGS terminal antenna size depends on the platform‟s requireddata rate. One terminal in development utilizes a 45 inch antenna to achieve 50 Mbps.A-2 Information Exchange 14
Core Avionics Master Plan 2011 Appendix A-22. Advance Research and Technology Development.Reduced Size Antennas. (2013-2015) Current antennas available to implementWideband SATCOM on many air platforms are too costly and difficult to install. In orderto reduce the integration cost and complexity, industry is researching smaller antennasand other conformal solutions in order to meet the system link-budget requirements.Smaller antennas would also allow integration onto non-central areas of air platformswhere there are significant space restrictions. These technologies are still limited toinnovative research and demonstration phases.3. Funded Enhancements and Potential Pursuits.High Data Rate Aviation Terminal (HDRAT). (2017) HDRAT will provide for secureKa/Ku high data rate satellite links (over commercial and government owned assets)and line-of-sight communications supporting Airborne Intelligence, Surveillance, andReconnaissance (AISR) platforms. It will provide AISR platforms with antenna solutions,modem assemblies, and the appropriate waveforms capable of supporting highresolution sensor data and C2 links at speeds up to 274 Mbps (platform and missiondependent).E. High Frequency (HF).1. Current capabilities.HF radios operate between 3 and 30 MHz and are still maintained on platforms thatcan accommodate the antennas for back-up BLOS communications. HF commonlyuses ionosphere propagation of radio waves to span BLOS distances. HF datatransmissions typically operate at user data rates 1200 to 2400 bps with advancedmodem waveforms capable of 9600 bps within 3 kHz channels. HF amplifiers typicallytransmit at 20 to 150 Watts for portable units and up to 2000 Watts for high powerstations. HF usage enables ad hoc connectivity (no prior access permissions or timeslot coordination required).HF - Automatic Link Establishment (HF-ALE) was developed based on the militarystandard for Interoperability and Performance Standards for Medium and HighFrequency Radio Systems (MIL-STD-188-141A and -141B). HF-ALE enables the radioto initiate a circuit between itself and another HF radio station or network of stationsalong with automated frequency selection for the connection. ALE also contains NATOStandardization Agreement (STANAG) 5066, which specifies protocols which separateapplication data and modem/radio level information.HF internet Protocol (HFIP or HF-IP) is usually associated with ALE and HF radiodata communications. HFIP provides protocol layers enabling internet file transfer, chat,web, or email.2. Funded Enhancements and Potential Pursuits.Increased Throughput (Wideband HF). (2016) Wideband HF is a waveform indevelopment that will be able to offer users higher data rates over HF. Testing wasconcluded in December of 2009 and interoperability testing was concluded in March of2010. MIL-STD-188-110C was drafted and ready for DOD approval in August of 2010.A-2 Information Exchange 15
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Core Avionics Master Plan - NAVAIR - U.S. Navy

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