Design of GPS (Global Positioning System) Status Reporting System.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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This study sought to design a status reporting system for NAVSTAR GPS. A systems engineering approach was used for the full satellite constellation with a fully functioning user equipment. The recommended system system consists of three main elements a database, a status transmission mechanism, and microcomputer software. The database proposed has two tiers and is maintained in real time as the operational constellation changes. The first tier contains the orbital ephemeris of the active constellation the second consists of areas and associated times of degraded coverage. Two methods of initial transmission of the status information are identified. The existing Notices to Airmen NOTAM system is one primary transmission system the other recommended initial link is electronic mail. Further dissemination by appropriate agencies, using a variety of transmission methods, is also outlined. The final element of the system is software that can run on microcomputers. This software would allow users with special requirements to parameters different from those used in producing the second tier of the database. Keywords Global positioning system Navigation satellites Satellite networks Information transfer. Theses
- Celestial Mechanics
- Non-Radio Communications