Experimental and Theoretical Results on the LAAS Sigma Overbound

Irfan Sayim, Boris Pervan, Sam Pullen and Per Enge

Abstract:	The Local Area Augmentation System (LAAS) is the differential satellite navigation architecture standard for civil aircraft precision approach and landing. While the system promises great practical benefit, a number of key technical challenges have been encountered in the definition of the architecture. Perhaps chief among these has been the need to ensure compliance with stringent requirements for navigation integrity. In this context, this paper defines a practical way to describe and quantitatively establish LAAS correction error broadcast sigma for final integrity risk assessment at aircraft. The method involves a synthesized solution of both data-based analysis for gaussian (or nearly gaussian) error sources and a theoretical bound for non-gaussian error sources such as ground reflection multipath. In addition, this paper covers the largely unresolved issues (binning, etc.) concerning sigma quantification by direct use of data.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	29 - 38
Cite this article:	Sayim, Irfan, Pervan, Boris, Pullen, Sam, Enge, Per, "Experimental and Theoretical Results on the LAAS Sigma Overbound," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 29-38.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In