The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
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Today's National Airspace System NAS is managed using an aging surveillance radar system. The radar technology is not adequate to sustain the support of aviation growth and cannot be adapted to use 21st century technologies Therefore, FAA has begun to implement the Next Generation Air Transportation System NextGen that would transform today's aviation and ensure increased safety and capacity. The first building block of the NextGen system is the implementation of the Automatic Dependent Surveillance-Broadcast ADS-B system. One of the most important design aspects of the ADS-B program is the design of the terrestrial radio station infrastructure. This design determines the layout of the terrestrial radio stations throughout the United States and is optimized to meet system performance, safety and security. Designing this infrastructure to meet system requirements is at the core of Service Volume SV Engineering. In this paper, the authors present a complex Geospatial/RF design ER Development model-based ADS-B SV Engineering design that captures radio sites layout and configuration parameters. CORE software is selected to implement the model-based SV Engineering environment.