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

Core Avionics Master Plan 2011 Appendix A-3Scope:Appendix A-3NavigationThis section addresses avionics that enable terrestrial-based, aircraftreferenced,shipboard and space-based navigation systems, including inertial referenceunits, position reference receivers, antennas, waveforms and chart media.Capability Evolution:Capability Enablers Capability Desired WarfightingElements Enhancements Capabilities• Attitude &Altitude• En-routeManeuver• InformationMedia• Recovery• Robustness& Security• Gyros & RadarAltimeters• NavigationReceivers• Paper &Electronic Charts• RF NavAids,Radars, JPALS• Antennas• IncreasedAccuracy• MGUE• Electronic Charts• Improved ACLS• Differential GPS• Jam Resistance• Global Access & Mobility• Dominant Maneuver• Precision Engagement• All Weather Operations• Deployment to Austere andSevere Environments• Navigation WarfareObjective: Global Maneuver and All-Weather RecoveryBaseline to Objective Transition Strategy.Navy Sea Strike and Sea Basing and Marine Corps Expeditionary ManeuverWarfare critically depend upon accurate navigation to achieve their objectives.Terrestrial-based systems (Non-Directional Beacon [NDB], VHF Omni-DirectionalReceiver [VOR], Distance Measuring Equipment [DME], Tactical Air Navigation[TACAN] and radars) have been the mainstay of airway and terminal operations fordecades. Operators have been authorized to utilize GPS signal accuracy to performprecision strike operations for several years, but have only recently been configured andauthorized to use GPS as a primary positioning sensor during InstrumentMeteorological Conditions (IMC) navigation enroute and in terminal flight modes.Commercial navigation technology and equipment have undergone significanttransformation; however incorporation of these enhancements into Naval Aviationplatforms has been limited because many of them do not have a GPS system that canmeet “integrity” standards (sufficiently high probability of availability and accuracy),approved navigation databases or digital glass displays. The CommunicationsNavigation Surveillance / Air Traffic Management (CNS/ATM) program is outfitting mostcockpits with the digital frameworks and components required to get them certified forGPS-based navigation. The GPS L1 Standard Positioning Service (SPS) and L1/L2Precise Positioning Service (PPS) signals also provide extremely accurate time datawhich is used for the synchronization of many communications and data-link systems.Military GPS equipment must be modified to take advantage of the new GPS MilitaryCode (M-Code) signal that will be broadcasted from modernized space vehicles.A-3 Navigation 1