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Experimental determination of position-estimate accuracy using back-azimuth signals from a microwave landing systemFlight tests using the Boeing 737 airplane to obtain position estimates with back azimuth signals from a microwave landing system (MLS) are discussed. The equations and logic used to generate a navigation position estimate in the MLS back azimuth signal environment are described. The error in the navigation position estimate is determined. A summary of the Boeing 737 position estimate update process is described. The navigation position estimate error calculated flight data and radar tracking information is analyzed. The position estimate error data using the MLS inputs are compared with error data obtained during dual distance measuring equipment updates.
Document ID
19800004765
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Knox, C. E. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
December 1, 1979
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
NASA-TP-1574
L-13074
Accession Number
80N13020
Funding Number(s)
PROJECT: RTOP 513-52-13-62
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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