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Improving the MLS through enhanced cockpit displaysA simulator investigation of various prediction and quickening algorithms in computer-generated forward-looking displays is presented; the algorithms are used to improve manual aircraft control on curved microwave landing system approaches. The experimental facility consisted of a Link GAT-2 simulator, a PDP 11/40 minicomputer, a high-speed graphic display, a TV camera, and a CRT monitor. Results indicate that second- and third-order predictor displays provide the best lateral performance and that intermediate levels of prediction and quickening provide the best vertical control. Prediction/quickening algorithms of increasing computational order were found to significantly reduce aileron, rudder, and elevator control responses. The conventional crosspointer displays yielded an average 2-sigma lateral error of + or - 200 over all wind conditions at 500 m from touchdown, and was therefore unable to meet FAA requirements (+ or - 22.9 m); the pictorial-preview display yielded much better results: an average 2-sigma lateral error of + or - 27 m. Neither display was able to approach the FAA specified accuracy requirement in the vertical dimension (+ or - 3.7 m).
Document ID
19820027114
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jensen, R. S.
(Ohio State University Columbus, OH, United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1981
Subject Category
Aircraft Instrumentation
Accession Number
82A10649
Distribution Limits
Public
Copyright
Other

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