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A study of redundancy management strategy for tetrad strap-down inertial systemsAlgorithms were developed that attempt to identify which sensor in a tetrad configuration has experienced a step failure. An algorithm is also described that provides a measure of the confidence with which the correct identification was made. Experimental results are presented from real-time tests conducted on a three-axis motion facility utilizing an ortho-skew tetrad strapdown inertial sensor package. The effects of prediction errors and of quantization on correct failure identification are discussed as well as an algorithm for detecting second failures through prediction.
Document ID
19790009671
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Hruby, R. J. (NASA Ames Research Center Moffett Field, CA, United States)
Bjorkman, W. S. (Analytical Mechanics Associates)
Schmidt, S. F. (Analytical Mechanics Associates)
Carestia, R. A. (Southern Colorada Univ.)
Date Acquired
September 3, 2013
Publication Date
February 1, 1979
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
NASA-TM-78576
A-6725
Accession Number
79N17842
Funding Number(s)
PROJECT: RTOP 513-53-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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