FAA Flight Test Results Using Airport Pseudolites with the LAAS Test Prototype (LTP)

John Warburton, Victor Wullschleger, Ruben Velez

Abstract:	The FAA’s baseline architecture for the Local Area Augmentation System (LAAS) includes airport pseudolites (APLs) as the preferred method for augmenting DGPS to achieve required availability. The FAA William J. Hughes Technical Center (WJHTC) is the primary test location for FAA LAAS testing. The LAAS Test Prototype (LTP), developed at the WJHTC, was the principal platform for the subject LAAS tests. The FAA LAAS Program Office, AND-730, procured a configurable Course Acquisition (C/A) code APL in 1996. This paper describes the WJHTC’s effort to integrate that APL into the LTP. Over 40 approaches were flown using an FAA owned Boeing 727 aircraft equipped with airborne GPS receivers capable of receiving live satellites and APL signals. Since the version of the LTP used for these tests did not employ the latest integrity techniques adopted by RTCA, the results have not been analyzed with respect to integrity or comparison of APL pseudoranges to other reference stations. This paper describes the results of the tests and discusses future work planned to upgrade the LTP and incorporate APLs.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1831 - 1839
Cite this article:	Warburton, John, Wullschleger, Victor, Velez, Ruben, "FAA Flight Test Results Using Airport Pseudolites with the LAAS Test Prototype (LTP)," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1831-1839.
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