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A comparison of two position estimate algorithms that use ILS localizer and DME information. Simulation and flight test resultsSimulation and flight tests were conducted to compare the accuracy of two algorithms designed to compute a position estimate with an airborne navigation computer. Both algorithms used ILS localizer and DME radio signals to compute a position difference vector to be used as an input to the navigation computer position estimate filter. The results of these tests show that the position estimate accuracy and response to artificially induced errors are improved when the position estimate is computed by an algorithm that geometrically combines DME and ILS localizer information to form a single component of error rather than by an algorithm that produces two independent components of error, one from a DMD input and the other from the ILS localizer input.
Document ID
19840009097
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Knox, C. E.
(NASA Langley Research Center Hampton, VA, United States)
Vicroy, D. D.
(NASA Langley Research Center Hampton, VA, United States)
Scanlon, C.
(Arkansas State Univ.)
Date Acquired
September 4, 2013
Publication Date
February 1, 1984
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
L-15711
NASA-TP-2281
NAS 1.60:2281
Accession Number
84N17165
Funding Number(s)
PROJECT: RTOP 534-04-13-52
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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