THIS REPORT DOCUMENTS THE DEVELOPMENT OF RECOMMENDATIONS FOR A NATIONAL APPROACH TO AUGMENTED GLOBAL POSITIONING SYSTEM (GPS) SERVICES. THE INSTITUTE FOR TELECOMMUNICATION SCIENCES LED A STUDY TEAM THAT INCLUDED THE U.S. ARMY TOPOGRAPHIC ENGINEERING CENTER, THE VOLPE NATIONAL TRANSPORTATION SYSTEMS CENTER, AND OVERLOOK SYSTEMS TECHNOLOGIES, INC. THE STUDY TEAM IDENTIFIED FEDERAL NAVIGATION, POSITIONING, AND TIMING REQUIREMENTS FOR LAND, MARINE, AIR, AND SPACE MODES OF OPERATION. THE STUDY TEAM THEN EVALUATED NUMEROUS OPERATING AND PROPOSED SYSTEMS THAT AUGMENT THE GPS STANDARD POSITIONING SERVICE. THE MOST PROMISING
SYSTEMS WERE COMBINED IN SIX DIFFERENT ARCHITECTURES INTENDED TO MEET THE WIDEST POSSIBLE RANGE OF USER REQUIREMENTS. ONE OF THESE ARCHITECTURES WAS ELIMINATED FROM CONSIDERATION DUE TO TECHNICAL CONCERNS. THE STUDY TEAM EVALUATED EACH OF THE REMAINING ARCHITECTURES AGAINST A SET OF PERFORMANCE, COST, AND SECURITY FACTORS. BASED ON THE ARCHITECTURE EVALUATIONS, THE STUDY TEAM DEVELOPED A SET OF RECOMMENDATIONS FOR A COORDINATED, NATIONAL APPROACH TO AUGMENTED GPSSERVICES THAT MEETS FEDERAL REQUIREMENTS WHILE AVOIDING UNNECESSARY DUPLICATION OF FACILITIES.
THIS INVESTIGATION WAS COMPLETED AS PART OF THE ITS-IDEA PROGRAM WHICH IS ONE OF THREE IDEA PROGRAMS MANAGED BY THE TRANSPORTATION RESEARCH BOARD (TRB...
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