Title: GPS/IRS AIME: Certification for Sole Means and Solution to RF Interference
Author(s): John Diesel and Gregory Dunn
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: 1599 - 1606
Cite this article: Diesel, John, Dunn, Gregory, "GPS/IRS AIME: Certification for Sole Means and Solution to RF Interference," 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. 1599-1606.
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Abstract: Autonomous Integrity Monitored Extrapolation (AIME) is a software mechanization for integrating GPS with IRS to achieve extremely high levels of availability for both failure detection and exclusion (FDE), as required for sole means of navigation. This is achieved by using the inertial system output, rather than using GPS directly. However, the inertial solution is corrected for Schulering errors and latent inertial errors, as well as for velocity and position errors. AIME has already been certified for primary means of navigation on the Airbus A330/340 aircraft. It will be certified for sole means of navigation on the A310/320 aircraft early next year, so that other equipment such as VOR or DME can be removed from the aircraft. The analysis, lab tests, and flight tests which were performed to achieve this certification are described in this paper. An additional advantage of AIME is that it achieves a high level of safety for commercial airliners, which would not be achieved by using augmented satellite navigation alone. Specifically, it solves the problem of unintentional RF interference, as well as the problem of jamming or spoofing by terrorists.