Flight Test of Universal Access Transceiver (UAT) Transmissions to Provide Alternative Positioning Navigation and Timing (APNT)

Sherman Lo, Yu-Hsuan Chen and Per Enge

Abstract:	The Federal Aviation Administration (FAA) Alternative Positioning, Navigation and Timing (APNT) program is developing technical solutions to provide robust terrestrial radio-navigation for Next Generation Air Transportation System (NextGen) airspace even if GPS is unavailable. This is particularly important because many key NextGen operational improvements are currently only supported by GPS. Additionally APNT may be useful for unmanned aerial systems (UASs) as many of these systems currently use only GPS for navigation. The APNT solution will build on existing FAA systems to provide the desired navigation capabilities. The APNT team is evaluating the Automatic Dependent Surveillance Broadcast (ADS-B) system as its offers significant possibility for navigation.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	1468 - 1477
Cite this article:	Lo, Sherman, Chen, Yu-Hsuan, Enge, Per, "Flight Test of Universal Access Transceiver (UAT) Transmissions to Provide Alternative Positioning Navigation and Timing (APNT)," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 1468-1477.
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