FAA Performance Type 1 LAAS Specification: Performance, Operations, and ATC Requirements

V. Wullschleger

Abstract:	The FAA, under the Government Industry Partnership (GIP), entered Stage 0 with the agreement to develop LAAS standards for Performance Type (PT) 1. PT 1 is intended to provide for a level of operation down to Category I minimums. During Stage 0, GIP team members, Honeywell and Raytheon, participated in the LAAS Ground Facility (LGF) specification development. These requirements were derived in part from the FAA LAAS Requirements Document (RD) and the RTCA LAAS Minimum Aviation System Performance Standard (MASPS), DO-245. Also, harmonization between the International Civil Aviation Organization (ICAO) Ground Based Augmentation System (GBAS) Standards and Recommended Practices (SARPS) and the LGF specification was completed. FAA contractors from SRC, Rannoch, MITRE, and government personnel from the Naval Air Warfare Center (NAWC) participated in the development and harmonization efforts. The FAA also assembled a team of experts from Ohio University and Stanford University to assist with the LAAS architecture and to assist with recommendations on specific design details. This collaboration of efforts produced a LGF specification that was essentially a performance specification with little detail on design, allowing maximum flexibility for the GIP teams who are developing PT 1 LAAS without FAA funding. However, several areas of the LGF had to be addressed in the event that the FAA assumed system maintenance. Additionally, FAA Air Traffic Control (ATC) requirements to monitor the condition of the GPS constellation had to be met. This paper covers the basic performance requirements; accuracy, integrity, continuity, availability, and coverage. Details on the FAA operations and maintenance interfaces are given, including the ATC constellation alert. Finally, a status and summary of the FAA/GIP program is given.
Published in:	Proceedings of the 2000 National Technical Meeting of The Institute of Navigation January 26 - 28, 2000 Pacific Hotel Disneyland Anaheim, CA
Pages:	194 - 199
Cite this article:	Wullschleger, V., "FAA Performance Type 1 LAAS Specification: Performance, Operations, and ATC Requirements," Proceedings of the 2000 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 2000, pp. 194-199.
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