Ohio University LAAS Monitoring: Design and Performance

Trent A. Skidmore, Frank van Graas, and Fan Liu

Abstract:	The monitoring design for the planned FAA Local Area Augmentation System (LAAS) must ensure certain performance characteristics in order to maintain safety for Category I, II, and III aircraft approach and landing operations. This paper presents an in-depth look at the Ohio University LAAS Integrity Design (OULID) and contrasts experimental results with the performance specifications of the LAAS Operational Requirements Document. Of key interest is the concept of hazardously misleading information (I-&II), which could potentially arise from faulty GPS satellite operations, radio frequency interference, or ground station malfunctions. This paper demonstrates how the OULID responds to anomalous inputs such as satellite ramp errors and interference. Included is an analysis of the monitor thresholds for satisfying a specified probability of false detection and the minimum detectable bias error. This paper is of particular interest to two groups: 1) Potential LAAS manufacturers who will build ground hardware and develop standards for the airborne equipment through the RTCA process, and 2) Airline officials who must understand the emerging trends in satellite-based landing systems.
Published in:	Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996) September 17 - 20, 1996 Kansas City, MO
Pages:	1615 - 1621
Cite this article:	Skidmore, Trent A., van Graas, Frank, Liu, Fan, "Ohio University LAAS Monitoring: Design and Performance," Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996), Kansas City, MO, September 1996, pp. 1615-1621.
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