Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.3981.3985PeiraviAli122008821In this study, we present the results of research carried
out in order to increase the reliability of the analog computer of a gyroscopic
naval navigation system by integration of a collection of the circuits
of the analog computer using field programmable analog arrays. The failure
rates of the existing analog computer system and its integrated version
using an FPAA are computed. The results show a substantial reduction in
the failure rate, a considerable increase in the mean time to failure
and therefore an improvement in the reliability of the system. It is proposed
that the whole gyroscopic navigation system of the naval vessel be integrated
as a mixed system using FPAAs and FPGAs. If this work is extended by integrating
other parts of the system, there will be a substantial increase in the
MTTF of the system and improvement in the reliability of the whole navigation
system. The calculations for the mean time to failures were carried out
using MIL-HDBK-217F for the Naval Sheltered and the Naval Unsheltered
working conditions per the real operating conditions of the system.]]>Looby, C.A. and C. Lyden,2000MIL-HDBK-217F, Notice 2,1995Lee, E.K.F. and P.G. Gulak,1991Zetex Semiconductors,1994Becker, J., F. Henrici, S. Trendelenburg and Y. Manoli,2008