{"product_id":"9780309052832","title":"Global Positioning System","description":"The Global Positioning System (GPS) is a satellite-based navigation system that was originally designed for the U.S. military. However, the number of civilian GPS users now exceeds the military users, and many commercial markets have emerged. This book identifies technical improvements that would enhance military, civilian, and commercial use of the GPS. Several technical improvements are recommended that could be made to enhance the overall system performance.Table of ContentsFront MatterExecutive SummaryTASK 1Recommendations that Enhance GPS Performance for Civil andCommercial UsersRecommendations that Enhance GPS Performance for All Users (Civil,Commercial, and Military)Improvement Implementation StrategyTASK 3THE TASKJOINT STUDY APPROACHMAJOR ISSUES AND CONSIDERATIONSGPS PROGRAM OVERVIEWGPS TECHNICAL OVERVIEWINTRODUCTIONGPS MILITARY APPLICATIONSCurrent and Future Applications and RequirementsAccuracy and IntegrityAnti-Jam and Anti-Spoof CapabilityGPS AVIATION APPLICATIONSCurrent and Future Applications and RequirementsResistance to Radio Frequency InterferenceOperational ProceduresMARITIME USE OF GPSCurrent and Future Applications and RequirementsAssociated TechnologiesSelective AvailabilityFindingsCurrent and Future Applications and RequirementsAccuracy Versus Other RequirementsFindingsCurrent and Future Applications and RequirementsChallenges to Full GPS UtilizationGPS EARTH SCIENCE APPLICATIONSOceanographyAirborne GeophysicsAccuracy RequirementsOceanographyFindingsCurrent and Future Applications and RequirementsTime SynchronizationSPACECRAFT USES OF GPSOrbit DeterminationLaunch and Re-entry Vehicle GuidanceSignal VisibilitySUMMARYINTRODUCTIONAccuracySELECTIVE AVAILABILITY AND ANTI-SPOOFINGSelective AvailabilityMilitary Utility of SAImpact of SA on GPS User Equipment Manufacturers and U.S.CompetitivenessImpact of SA on Civil UsersFindings and RecommendationsImpact of A-S on Military UsersFindings and RecommendationsSIGNAL STRUCTURE MODIFICATIONS TO REDUCE ATMOSPHERIC DELAY ERRORGuidelines and Technical ConsiderationsNew Signal Structure OptionsOption 2: Narrow-Band L4 SignalIncreased AccuracyReduction of Receiver Noise and Multipath ErrorsFindings and RecommendationsRecommended Upgrades to the Operational Control SegmentAccuracy ImprovementsOverall System ImprovementsPlanned Block IIR OperationAccuracy Improvements by Incorporating Satellite Ranging Data intoGround SolutionGround-Based Integrity ImprovementsRapid, Direct Y-Code AcquisitionInertial Aiding ImprovementsSignal Processing ImprovementsImproved L2 Ionospheric CorrectionPossible Interim Operational ProceduresIMPROVEMENT IMPLEMENTATION STRATEGYUse of a 24-Satellite Ensemble ClockReduced Satellite Clock Errors Through Use of Improved ClocksSatellite-Based Integrity MonitoringCross-Correlation Type Y-Codeless ReceiversY-Code Tracking PPS ReceiversWide-Band Signals at High FrequencySpot BeamsGPS Transmit Antenna CalibrationImproved L1 Signal Reception at Angles Below the Earth's Horizo","brand":"Exclusive Books ZA NEW","offers":[{"title":"Default Title","offer_id":48588557484350,"sku":"9780309052832","price":0.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4357\/7662\/files\/9780309052832_f2c60808-2d35-451c-bd4a-75a46f0a3dc6.jpg?v=1715109018","url":"https:\/\/exclusivebooks.co.za\/products\/9780309052832","provider":"Exclusive Books Online","version":"1.0","type":"link"}