PDFTech ReportDOT-VNTSC-RSPA-90-03DOD-4650.4PB91-190868Radio navigationSatellite navigation systemsGlobal Positioning SystemFederal governmentState of the art reportsShip navigational aidsAids to air navigationPosition fixingUnited StatesUnited States. Dept. of Transportation. Research and Special Programs AdministrationUnited State Dept of DefenseUnited States. Dept. of TransportationJohn A. Volpe National Transportation Systems Center, (U.S.)NTL-LAWS AND REGULATIONS-LAWS AND REGULATIONSNTL-PLANNING AND POLICY-PLANNING AND POLICYNTL-PLANNING AND POLICY-Plans and Policy StatementsNTL-GEOGRAPHIC INFORMATION SYSTEMS-GEOGRAPHIC INFORMATION SYSTEMSNTL-INTELLIGENT TRANSPORTATION SYSTEMS-INTELLIGENT TRANSPORTATION SYSTEMSVolpe National Transporta...