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Atlas/ Glossary/ SPACE-BASED ADS-B (SBA)

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SPACE-BASED ADS-B (SBA).

SPACE-BASED ADS-B (SBA)

- A constellation of satellites that receives ADS-B Out broadcasts and relays that information to the appropriate surveillance facility. The currently deployed SBA system is only capable of receiving broadcasts from 1090ES-equipped aircraft, and not from those equipped with only a universal access transceiver (UAT). Also, aircraft with a top-of-fuselage-mounted transponder antenna (required for TCAS II installations) will be better received by SBA, especially at latitudes below 45 degrees.