Table of Contents
1.0INTRODUCTIONANDEXECUTIVESUMMARY
1.1PurposeofThisDocument
1.2ImprovedSystemAvailability
1.3EfficientSpectrumUsageandGreaterSystem
Capacity
1.4AutomaticFrequencySelection
1.5DataIntegrityComparabletoOtherDataLink
Systems
1.6HFDataLinkIsAMoreEffectiveBack-upTo
SATCOM
2.0HFDATALINKSYSTEMDESCRIPTION
2.1Introduction
2.2HFDataLinkAvionicsSystem
2.3HFDataLinkGroundSystem
2.3.1HFDataLinkGroundStation
2.3.2GroundStationInterworkingandHFDataLink
NetworkAccessHubs
2.3.3HFDataLinkNetworkManagement
2.3.4GroundStationSynchronization
2.4AntennasforHFDataLinkGroundStations
2.4.1General
2.4.2AntennaforTransmittingSites
2.4.2AntennasforTransmittingSites
2.4.3AntennasforReceivingSites
2.4.4AntennaTypesforShortorShort/ModerateRange
2.4.4.1HorizontalBroadbandDipole
2.4.4.2OmnidirectionalCircularlyPolarizedLPA
2.4.4.3VPBroadbandMonopoleOmnidirectionalAntenna
2.4.4.4CircularlyPolarizedSpiralAntenna
2.4.5AntennasforModerateandLongRanges
2.4.5.1Introduction
2.4.5.2HorizontallyPolarizedLog-PeriodicAntenna
2.4.5.3VerticallyPolarizedLog-PeriodicAntenna
2.4.5.4HighGainHorizontallyPolarizedLog-Periodic
Antennas
2.4.5.5HighGainOmnidirectionalAntenna
3.0OPERATIONALCONCEPT(SCENARIOS)
3.1HFDataLinkOperationalConcepts
3.2AOCOperationalConcept
3.2.1FlightCrewNeedforAOCHFDataLink
3.2.2OtherOperatorNeedforAOCHFDataLink
3.2.3SynergyandComparisonwithSATCOM
3.2.4TypicalHFDataLinkFlightScenario
3.2.4.1InitialLog-On
3.2.4.2DownlinkMessageProcessing
3.2.4.3UplinkMessageProcessing
3.2.4.4FrequencyChange
3.2.4.4.1GSInitiatedFrequencyChange
3.2.4.4.2AircraftInitiatedFrequencyChange
3.2.4.5FlightCrewUseofHFVoice
3.2.4.6TransitiontoVHFDataLink
3.2.4.7FlightArrival
3.3HFDataLinkServiceProviderOperationalConcept
3.3.1InitialLog-On
3.3.2ChannelCapacity
3.3.3DownlinkMessageProcessing
3.3.4UplinkMessageProcessing
3.3.5GSInitiatedFrequencyChange
3.3.6AircraftPolling
3.4AirTrafficServices(ATS)OperationalConcept
3.4.1TypicalATSScenarios
3.4.1.1InitialNorthAtlanticTrials
3.4.1.2Increment--InformationServicesSimple
ClearanceDeliveries
3.4.1.3Increment--ACARS/ARINC622Environment/FANS-1
Routing
3.4.1.4Increment--ATNScenarios
4.0GROUNDSTATIONNETWORKING/INTEROPERATION
4.1OverallSystemConcept
4.2GroundStationNetworking
4.3GroundStationInteroperation
5.0TRANSITIONS/CAPACITYGROWTH
5.1Transition/CapacityGrowth
5.2CoverageTransition
5.3ImplementationScenario
6.0SPECTRUMANDNETWORKMANAGEMENT
6.1Introduction
6.2DefinitionofGeographicRegions
6.3NumberofHFGroundStationsPerGeographicRegion
6.4MinimumNumberofActiveFrequenciesToServethe
PeakLoadPerRegion
6.5NumberofActiveFrequenciesPerStationand
GeographicRegion
6.6NumberofActiveFrequenciesNeededonaGlobal
Basis
6.7DynamicFrequencyManagement
ATTACHMENTS
1-1AirborneSubsystemBlockDiagram
1-2GroundCommunicationsSubsystemArchitecture
1-3End-To-EndSystemModel
2-1HFDUSystemBlockDiagram
2-2HFDRSystemBlockDiagram
3Antennas
APPENDICES
AFrequencyEstimatestoSupportHFDLService
BHFDataLinkTrials
C1SimulationStudies(BONeS)
C2SimulationStudies(OPNET)
DPropagationStudies
EListofDefinitions
FAcronymList Abstract
Provides material to enhance the understanding of High Frequency Data Link. Also provides a baseline for further system development and documentation effort within RTCS and ICAO.
